WO2010024507A1

WO2010024507A1 - Bar type led lighting apparatus

Info

Publication number: WO2010024507A1
Application number: PCT/KR2009/000459
Authority: WO
Inventors: Jason. Jae Gill
Original assignee: Well-Light Inc.
Priority date: 2008-08-25
Filing date: 2009-01-30
Publication date: 2010-03-04
Also published as: KR100980365B1; KR20100024212A

Abstract

The present invention relates to a bar type LED lighting apparatus, which includes first and second protrusions inclined in different directions and LED modules are attached to the first and second protrusions to irradiate in different directions. Further, the angles of the first and second protrusions can be freely adjusted. Accordingly, it is possible to easily achieve various shapes of light distribution and free lighting design that can be used for various uses and positions. Further, the present invention has an advantage of freely producing light distribution in a limited space while ensuring the maximum amount of light by making the protrusions, where the LEDs are attached, partially overlap.

Description

BAR TYPE LED LIGHTING APPARATUS

The present invention relates to a bar type LED lighting apparatus, particularly a bar type LED lighting apparatus that can achieve various shapes of light distribution using an LED that radiate light straight.

In general, lighting apparatuses directly or indirectly illuminate using a mercury lamp, a fluorescent lamp, a high pressure sodium lamp, a common bulb etc. as a light source that radiates light. However, recently, as light emitting diodes that radiate light at a high luminance with low power consumption have been developed, lighting apparatuses using light emitting diodes, i.e. LEDs, have been developed and gradually increased in demand.

A bar type LED lighting apparatus of the lighting apparatuses using LEDs, as shown in FIG. 1, includes: a bar-shaped light casing 1 having a flat attachment surface; a printed circuit board 2 attached to the flat attachment surface of the bar-shaped light casing 1; and a plurality of LEDs 3 longitudinally arranged on the printed circuit board 2 to receive power and emit light.

Since the LEDs 3 are arranged in a straight line in the bar type LED lighting apparatus, the candela (cd) can be adjusted, for example, to increase or decrease the maximum candela by increasing the number of LDEs 3 or by decreasing the number of LEDs 3. However, the apparatus has a problem in that the shape of the light distribution, as shown in FIG. 2, is fixed to an ellipse having a long axis in the longitudinal direction of the bar-shaped light casing 1.

According to another bar type lighting apparatus, as shown in FIG. 3, a bar-shaped light casing 1 having a flat attachment surface is provided with a lens cover 4 that refracts light and the shape of light distribution is adjusted by refraction of the light through the lens cover 4.

That is, as shown in FIG. 4, it is possible to adjust the shape of the light distribution to increase the width of the short axis in the elliptical light distribution by refracting the light emitted from the LEDs using the lens cover 4.

Further, the shape of light distribution can be adjusted into a fixed asymmetric light distribution, as shown in FIG. 5, by inclining and fixing the light casing 1 equipped with the lens cover 4.

However, the bar type lighting apparatus has a problem in that it has low lighting efficiency because a majority of the light is lost while being refracted through the lens cover 4.

An object of the invention is to provide a bar type LED lighting apparatus that can easily achieve various shapes of light distribution in a limited space and free lighting design for uses and positions.

A bar type LED lighting apparatus of the invention includes: a body member that includes a first attachment part having a plurality of spaced first protrusions and a second attachment part having a plurality of spaced second protrusions, LED modules attached to the first attachment part and the second attachment part of the body member, in which the first protrusions and second protrusions have slopes in different direction and are alternately disposed.

A bar type LED lighting apparatus of the invention includes: a first substrate member having a plurality of spaced first protrusions; a second substrate member having a plurality of spaced second protrusions; and LED modules attached to the first substrate member and the second substrate member, in which the second protrusions are inserted between the first protrusions.

A bar type LED lighting apparatus of the invention includes: a base member having hinges at both longitudinal sides; a plurality of spaced first protrusions that is rotated by hinges disposed at a side of the base member; a plurality of second protrusions that is rotated by hinges disposed at the other side of the base member and spaced to be disposed between the first protrusions; and LED modules attached to the first protrusions and the second protrusions.

The present invention has an advantage of easily achieving various shapes of light distribution and providing free lighting design for various uses and positions.

Further, the present invention has an advantage of freely producing light distribution in a limited space while ensuring the maximum amount of light by making the protrusions, where the LEDs are attached, partially overlap.

FIG. 1 is a front view showing a bar type LED lighting apparatus in the related art.

FIG. 2 is a view illustrating an example of a shape of light distribution formed by the bar type LED lighting apparatus shown in FIG. 1.

FIG. 3 is a cross-sectional view showing another bar type LED lighting apparatus in the related art.

FIGS. 4 and 5 are views illustrating examples of the shape of light distribution formed by the bar type LED lighting apparatus shown in FIG. 3.

FIG. 6 is a perspective view showing an embodiment of the invention.

FIG. 7 is a side view of the bar type LED lighting apparatus shown in FIG. 6.

FIGS. 8 to 12 are views illustrating examples of a shape of light distribution formed by the invention.

FIGS. 13 to 15 are perspective views illustrating an assembly process of another embodiment of the invention.

FIGS. 16 and 17 are perspective views showing another embodiment of the invention.

FIG. 18 is a perspective view showing a bar type LED lighting apparatus according to another embodiment of the invention.

FIG. 19 is a cross-sectional view of the main part of the invention.

FIGS. 20 to 23 are side views illustrating the use of the bar type LED lighting apparatus shown in FIG. 16.

FIGS. 24 and 25 are perspective views showing a bar type LED lighting apparatus according to another embodiment of the invention.

FIG. 26 is an enlarged cross-sectional view of the main part of the bar type LED lighting apparatus shown in FIG. 24.

FIG. 27 is a perspective view showing another embodiment of the invention.

FIGS. 28 to 33 are side views illustrating the use of the bar type LED lighting apparatus shown in FIG. 24.

FIGS. 34 to 36 are views illustrating the shapes of light distribution formed by the invention.

FIGS. 37 to 39 are views illustrating the use of the invention.

Preferred embodiments of the invention are described herein in detail with the accompanying drawings.

FIG. 6 is a perspective view of a bar type LED lighting apparatus according to an embodiment of the invention, showing a body member having integrally formed first and second attachment parts having first and second protrusions that have slopes formed in different directions.

FIGS. 7 is a side view of the bar type LED lighting apparatus shown in FIG. 6, showing the angles of the first and second protrusions and the irradiation angle of an LED module.

FIGS. 8 to 12 are views illustrating an example of a shape of light distribution formed by the invention, in which various shapes of light distribution formed according to the angles of the first and second protrusions and the irradiation angle of the LED module shown in FIG. 7.

FIGS. 13 to 15 are perspective views illustrating an assembly process of another embodiment of the invention, in which first and second substrates are formed by cutting a rectangular panel in zigzags, and then combined.

FIGS. 16 and 17 are perspective views showing another embodiment of the invention, illustrating an example of fastening first and second substrates to a panel-fixing base member having slopes at both sides, using bolts.

FIG. 18 is a perspective view showing a bar type LED lighting apparatus according to another embodiment of the invention, illustrating an example of attaching first and second substrates to first and second body member members attached rotatably by a shaft member.

FIG. 19 is a cross-sectional view showing the main part of the bar type LED lighting apparatus of the invention, in which the configuration of the shaft member is enlarged.

FIGS. 20 to 23 are side views illustrating the use of the bar type LED lighting apparatus shown in FIG. 18, in which an example lighting in various types by rotating first and second body member members about a shaft member is shown.

FIGS. 24 and 25 are perspective views showing a bar type LED lighting apparatus according to another embodiment of the invention, illustrating an example connecting first and second protrusions with hinge portions at both sides of a base member.

FIG. 27 is a perspective view showing another embodiment of the invention, in which a heat sink is formed on the bottom of a base member.

FIGS. 28 to 33 are side views illustrating the use of the bar type LED lighting apparatus shown in FIG. 24, in which an example of lighting in various ways by rotating a substrate including first and second protrusions about hinges is shown.

FIGS. 34 to 36 are views illustrating shapes of light distribution formed by the invention, in which FIGS. 34 and 35 illustrates a difference in the shape of light distribution when first and second substrates are inclined symmetrically, but at different angles, and FIG. 36 illustrates a shape of the light distribution when the first and second substrates are inclined asymmetrically.

FIGS. 37 to 39 are views illustrating the use of the invention, showing embodiments of the invention used in a lamp for display, a wall washer lamp, and a cove light lamp.

The body member 10 shown in FIG. 6 has a bar type body and includes first and

second attachment parts

11a, 12a each of which is equipped with LEDs on a side.

The first attachment part 11a has a plurality of spaced first protrusions 11 sloped and where LED modules 20 are attached.

Further, the second attachment part 12a has a plurality of spaced second protrusions 12 sloped and where LED modules 20 are attached, but are inclined in the opposite direction to the first protrusions 11.

Circuit board members 60 are attached to the first and

second attachment parts

11a, 12a and the LED modules 20 are attached on the circuit board members 60.

A metallic PCB (Printed Circuit Board) is commonly used for the circuit board member 60 for heat radiation, the circuit board member 60 is divided into a first circuit board 61 that is attached onto the first attachment part 11a and a second circuit board 62 that is attached onto the second attachment part 12a, and the first and second circuit boards 61, 62 are formed by cutting a board in zigzags.

Since the first and second circuit boards 61, 62 are formed by cutting one board into zigzags, the processing is simplified, thereby minimizing waste of material in manufacturing circuit boards that is attached onto the first and

second attachment parts

11a, 12a to attach the LED modules 20.

The LED modules 20, which receive electric power and emit light, are attached to the first and second circuit boards 61, 62 and the circuit board member 60 has a pattern for supplying power to the LED module 20 and controlling the operation of the LED module 20, which is already known in the art and not described in detail herein.

The LED module 20 includes light emitting diodes chips (LED chips) that are attached to the metallic PCB to emit light using supplied electric power, such that light sources using LEDs known in the art are included in the configuration of the invention.

On the other hand, it is preferable that a transparent or semi-transparent cover 80 covering the first and

second attachment parts

11, 12 is detachably combined with the body member 10, and the cover 80 may have a lens portion refracting light to make various shapes of light distribution by refracting straight light produced by the LED module 20.

Further, rail grooves 10a are longitudinally formed at both longitudinal sides of the body member 10 and rail projections 81 that are fitted and locked in the rail grooves 10a are formed at both sides of the cover 80.

That is, the cover 80 is combined with or separated from the body member 10 by inserting the rail projections 81 into the rail grooves 10a from an end of the body member 10 and longitudinally moving the cover 80.

The bar type LED lighting apparatus, as shown in FIG. 7, can achieve various shapes of light distribution corresponding to the slope angles α of the first and

second protrusions

11, 12, and irradiation angles α of light produced by the LED modules 20, and various shapes of light distribution are shown in FIGS. 8 to 12.

Embodiments shown in FIGS. 8 to 12 illustrate the shapes of light distribution that are changed by changing the slope angles α of the first and

second protrusions

11, 12, and irradiation angles of light produced by the LED modules 20 of the body member 10 equipped with LED modules 20 of 1W arranged at 30mm intervals on the slopes of the first and

second protrusions

11, 12.

FIG. 8 shows a shape of the light distribution formed when the LED modules 20 having irradiation angles β of 30 are used and the first and

second protrusions

11, 12 are symmetrically formed at slope angles α of 20.

FIG. 9 shows a shape of the light distribution formed when the LED modules 20 having irradiation angles β of 30 are used and the first and

second protrusions

11, 12 are symmetrically formed at slope angles α of 25.

FIG. 10 shows a shape of the light distribution formed when the LED modules 20 having irradiation angles β of 400 are used and the first and

second protrusions

11, 12 are symmetrically formed at slope angles α of 25.

FIG. 11 shows a shape of the light distribution formed when the LED modules 20 having irradiation angles β of 40 are used and the first and

second protrusions

11, 12 are symmetrically formed at slope angles α of 27.

FIG. 12 shows a shape of the light distribution formed when the LED modules 20 having irradiation angles β of 40 are used and the first and

second protrusions

11, 12 are symmetrically formed at slope angles α of 30.

The bar type LED lighting apparatus of the invention can achieve various shapes of light distribution as described above, and may achieve more various shapes of light distribution by providing the first and

second protrusions

11, 12 with asymmetric slope angles α.

Meanwhile, the bar type LED lighting apparatus of the invention, as shown in FIG. 13, includes a first substrate member 30 having a plurality of protrusions 31 spaced apart from each other on a side and a second substrate member 40 having a plurality of second protrusions 41 spaced apart from each other.

The first and

second substrate members

30, 40 are combined together such that second protrusions 41 are inserted between the first protrusions 31 and the first protrusions 31 are inserted between the second protrusions 41.

The LED modules 20 are attached to the first and

second protrusions

31, 41 and include light emitting diode chips (LED chip) receiving electric power and emitting light, and light sources using LED, which is known in the art, are included in the configuration of the invention.

Further, the first and

second protrusions

31, 41 are inclined in different directions according to the combination angle of the first and

second substrate member

30, 40, and various shapes of light distribution can be achieved by the angle.

The first and

second substrate members

30, 40, as shown in FIGS. 14 and 15, are preferably formed by cutting a substrate in zigzags such that the first protrusions 31 and the second protrusions 41 are alternately formed and the first protrusions 31 are connected and the second protrusions 41 are connected.

The first protrusions 31 are disposed in second insertion portions 42 formed between the second protrusions 41 and the second protrusions 41 are disposed in the first insertion portions 32 formed between the first protrusions 31, such that, as described above, by cutting one substrate in zigzags to alternately form the first and

second protrusions

31, 41, the first insertion portions 32 where the second protrusions 41 are inserted are formed between the first protrusions 31 where the second protrusions 41 are cut, and the second insertion portions 42 where the first protrusions 31 are inserted are formed between the second protrusions 41 where the first protrusions 31 are cut.

Further, since the first and

second substrate members

30, 40 are combined such that portions of the first and

second protrusions

31, 41 are alternately disposed, they can be used in the minimum space.

Further, since the first and

second insertion portions

32, 42 are formed between the first and

second protrusions

31, 41 in the first and

second substrate members

30, 40 due to the zigzag cut, machining for forming the first and

second insertion portions

32, 42 to correspond to the second and

first protrusions

41, 31 is not required. Accordingly, the manufacturing process is simplified.

Basically, the first and

second substrate members

30, 40 are metallic printed circuit boards (PCB), and though not shown, they may be divided into panels corresponding to each other and substrates that are attached to the panel and where the LED modules 20 are attached.

The first and

second substrate members

30, 40, as shown in FIGS. 16 and 17, may be attached to slopes formed at both sides of a substrate-fixing base member 120, which are inclined at different angles.

It is preferable to provide substrate-fixing base members 120 having various shapes of slopes at both sides and detachably attach the first and

second substrate members

30, 40 to the substrate-fixing base members 120 in order to achieve various shapes of light distribution by changing the substrate-fixing base members 120.

A plurality of spaced bolt insertion holes 120a are formed through the slopes of the substrate-fixing base members 20 and

bolt insertion holes

30a, 40a that correspond to the bolt insertion holes 120a are formed in the first and

second substrate members

30, 40, such that the first and

second substrate members

30, 40 are basically fastened by fixing bolts 121 inserted into the bolt insertion holes 120a through the

bolt insertion holes

30a, 40a.

The first and

second substrate members

30, 40 are simply detached from the substrate-fixing member 120 by loosening the fixing bolts 121 and can be simply fastened to another substrate-fixing base member 120 having a different shape by inserting the fixing bolts 121.

Further, a heat sink 122 for heat radiation is formed at the bottom of the substrate-fixing base member 120 and includes a plurality of radiating fins or radiating pieces, which are spaced apart from each other and protrude, to discharge heat generated from the LED modules 20 by increasing heat transfer areas.

The heat sink 90 is provided to prevent trouble of the LED modules 20 due to heat by discharging heat from the LED modules 20 that is generated when the LED modules 20 emit light and heat generated from a driver (not shown) that converts the voltage of electric power supplied to the LED modules 20 into using voltage.

On the other hand, as shown in FIG. 18, the first substrate member 30 is attached to a first attachment part 101, which has a plurality of spaced protrusions 100a, of a first body member 100 and the second substrate member 40 is attached to a second attachment part 111, which has a plurality of spaced protrusions 110a, of a second body member 110. Further, the first and

second body members

100, 110 are rotatably combined together by a shaft member 70 inserted through the first and

second body members

100, 110 such that the protrusions 110a of the first body member 100 are disposed between the protrusions 110a of the second body member 110 and the protrusions 110a of the second body member 110 are disposed between the protrusions 110a of the first body member 100.

Further, the protrusions 100a of the first attachment part 101 and the protrusions 110a of the second attachment part 111 have slopes formed in different directions.

The shaft member 70 is longitudinally inserted through the first and

second body members

100, 110 to allow the first and

second body members

100, 110 to rotate, such that the shaft member 70 can fix the first and

second body members

100, 110 to the rotated positions or release them from the positions.

The shaft member 70, as shown in FIG. 19, includes: first and second

hollow shafts

71, 72 each having an elastic projection 71a in a cavity formed longitudinally and inserted through the first and

second body members

100, 110 such that the cavities are longitudinally aligned; and a rotational center shaft 73 inserted through the first and second

hollow shafts

71, 72 and having a plurality of spaced locking grooves 73a where the elastic projection 71a is inserted.

It is preferable for the first and

second body members

100, 110 to have a heat sink 90 for heat radiation at a side, respectively.

The heat sink 90 includes a plurality of radiating fins or radiating pieces, which are spaced apart from each other and protrude from the bottoms of the first and

second body members

100, 110, to discharge heat generated from the LED modules 20 by increasing heat transfer areas.

That is, the first and

second body members

100, 110 rotate about the rotational center shaft 73, in which the elastic projections 71a formed in the cavities of the first and second

hollow shafts

71, 72 are locked in the locking grooves 73a of the rotational center shaft 73, such that they are fixed to the rotated positions.

It is possible to adjust the angle by rotating the first and

second body members

100, 110 to unlock the elastic projections 71a from the locking grooves 73a and lock the elastic projections 71a to other locking grooves 73a by applying force for unlocking the elastic projections 71a from the locking grooves 73a.

The shaft member 70 includes a hinge mechanism, other than the above, which is known in the art, to fix the first and

second body members

100, 110 to rotated positions or release them from the positions, which is included in the configuration of the invention.

Therefore, it is possible to achieve various shapes of light distribution by rotating the first and

second body members

100, 110, 30, 40 about the shaft member 70 to freely change the irradiation direction of the LED modules 20 attached to the first and

second attachment parts

31, 41 as shown in FIGS. 20 to 23, such that the direction of light can be adjusted for the use.

On the other hand, the invention, as shown in FIGS, 24 and 25, may include a plurality of first and

second protrusions

31, 41 that are alternately provided at both sides of a base member and rotated by the hinges 51.

The base member 50 is basically formed in a panel shape having a predetermined length and has hinges 51, which rotatably hinge the first and

second protrusions

31, 41, at both longitudinal sides.

The first and

second protrusions

31, 41 are alternately disposed on the base member 50, in which the first protrusions 31 and the second protrusions 41 can be separated and independently hinged to the base member 50 by the hinges 51.

The first protrusions 31 are independently attached to the base member 50 and their angles can be independently adjusted by being rotated about the hinges 51, and similarly, the angles of the second protrusions 41 can be independently adjusted by being rotated about the hinges 51.

The first protrusions 31 may be connected by first connecting portions 31b to form the first substrate member 30.

Further, the second protrusions 41 may be connected by second connecting portions 41b to form the second substrate member 40.

A first step 31a having a smaller thickness than the first protrusion 31 is formed at an end of the first protrusion 31 and a second step 41a having a smaller thickness than the second protrusions 41 is formed at an end of the second protrusion 41a. Further, the first connecting portion 31b connecting the first protrusions 31 is formed to correspond to the step 31a of the first protrusion 31 and the second connecting portion 41b connecting the second protrusions 41 is formed to correspond to the step 41a of the second protrusion 41.

Preferably, the thickness of the first connecting portion 31b corresponds to the thickness of the first step 31a and the thickness of the second connecting portion 41b corresponds to the thickness of the second step 41a.

When the first and

second substrates

30, 40 are rotated about the hinges 51 and positioned on the base member 50, the first steps 31a at the end of the first protrusions 31 overlap the second connecting portions 41b and the second steps 41a at the end of the second protrusions 41 overlap the first connecting portions 31b. Accordingly, as shown in FIG. 23, the first and

second protrusions

31, 41 equipped with the LED modules 20 can be folded without projections on the attachment surfaces.

Further, the hinge 51, as shown in FIG. 26, includes: a plurality of first hinge shafts 52 each having an elastic projection 51a protruding in a cavity formed longitudinally and spaced apart from each other at an end of the first substrate member 30; a plurality of second hinge shafts 53 each having an elastic projection 51a in a cavity formed longitudinally and spaced apart from each other at an end of the second substrate member 40; and a third hinge shaft 54 disposed through the cavities of the first and

second hinge shafts

52, 53 to connect them and has a plurality of spaced locking grooves 54a on the outer circumference to insert the elastic projections 51a.

That is, the first and

second substrate members

30, 40 rotate about the third shaft 54, in which the elastic projections 51a protruding in the cavities of the first and

second hinge shafts

52, 53 are locked in the locking grooves 54a of the third hinge shaft 54. Accordingly, the first and

second substrate members

30, 40 are fixed to the rotated positions.

It is possible to adjust the angle by rotating the first and

second substrate members

30, 40 to unlock the elastic projections 51a from the locking grooves 54a and lock the elastic projections 51a to other locking grooves 54a by applying force for unlocking the elastic projections 51a from the locking grooves 54a.

The shaft member 51 includes a hinge mechanism, other than the above, which is known in the art, to fix the first and

second substrate members

30, 40 to rotated positions or release them from the positions, which is included in the configuration of the invention.

Further, the base member, as shown in FIG. 27, preferably has a heat sink 90 for heat radiation at a side.

The heat sink 90 includes a plurality of radiating fins or radiating pieces, which are spaced apart from each other and protrude from the bottoms of the base member 50 to discharge heat generated from the LED modules 20 by increasing heat transfer areas.

The first and

second substrate members

30, 40 are rotated about the hinges 51 and positioned such that the first and

second protrusions

31, 41 are symmetrically inclined, in which the first and

second substrate members

30, 40 can be positioned such that the irradiation ranges of the LED modules 20 agree with each other in the vertical direction of the base member 50, as shown in FIG. 28.

Further, as shown in FIG. 29, the first and

second substrate members

30, 40 are rotated about the hinges 51 and positioned such that the first and

second protrusions

31, 41 are symmetrically inclined, in which the first and

second substrate members

30, 40 can be positioned such that the irradiation ranges of the LED modules 20 are opened in the vertical direction of the base member 50.

Further, the first and

second substrate members

30, 40 can be rotated about the hinges 51 and positioned such that the first and

second protrusions

31, 41 are asymmetrically inclined at different angles as shown in FIG. 30.

Further, as shown in FIGS. 31 and 32, the angles can be adjusted by folding one of the first and

second substrate members

30, 40 to overlap the base member 50 and rotating the other about the hinge 51. Alternatively, as shown in FIG. 33, the angles can be adjusted by opening one of the first and

second substrate members

30, 40 and rotating the other about the hinge 51.

The shape of light distribution shown in FIG. 34 is achieved when the angles of the first and

second substrate members

30, 40 are adjusted as in the example shown in FIG. 28, the shape of the light distribution shown in FIG. 35 is achieved when the angles of the first and

second substrate members

30, 40 are adjusted as in the example shown in FIG. 29, and the shape of the light distribution shown in FIG. 36 is achieved when the angles of the first and

second substrate members

30, 40 are adjusted as in the example shown in FIG. 30.

That is, according to the invention, it is possible to achieve desired shapes of light distribution by rotating the first and

second substrate members

30, 40 about the hinges 51, such that the highest uniformity ratio of illumination can be achieved for uses and positions, regardless of the distances between the LED modules 20, light sources.

The bar type LED lighting apparatus of the invention, as shown in FIG. 37, can be used as a display lamp that illuminates products on display in a showcase for display, by using slim and asymmetric shapes of light distribution.

Further, as shown in FIG. 38, the bar type LED lighting apparatus can be used as a wall washer lamp that irradiates light onto walls.

Further, as shown in FIG. 39, the bar type LED lighting apparatus can be used as a cove light lamp that irradiates light to upper portions of walls or the ceiling, for indirect illumination.

The invention can be applied to various lighting apparatuses using slim and asymmetric shapes of light distribution.

The invention is not limited to the above embodiments and can be variously modified without departing from the scope of the invention, which is included in the configuration of the invention.

Claims

A bar type LED lighting apparatus, comprising:

a body member that includes a first attachment part having a plurality of spaced first protrusions and a second attachment part having a plurality of spaced second protrusions, the first protrusions and second protrusions having slopes in different direction and alternately disposed;

LED modules attached to the first attachment part and the second attachment part of the body member.
The bar type LED lighting apparatus according to claim 1, wherein circuit board members are attached to the first attachment part and the second attachment part, and the LED modules are attached to the circuit board members.
A bar type LED lighting apparatus, comprising:

a first substrate member having a plurality of spaced first protrusions;

a second substrate member having a plurality of spaced second protrusions, the second protrusions being inserted between the first protrusions; and

LED modules attached to the first substrate member and the second substrate member.
The bar type LED lighting apparatus according to claim 3, wherein the first substrate member and the second substrate member are formed by cutting a substrate in zigzags.
The bar type LED lighting apparatus according to claim 3, further comprising:

a substrate-fixing base member having slopes having different inclination at both sides,

wherein the first substrate member and the second substrate member are attached to the slopes of the substrate-fixing base member.
The bar type LED lighting apparatus according to claim 3, further comprising:

a first body member having a first attachment part having a plurality of spaced protrusions;

a second body member having a second attachment part having a plurality of protrusions spaced to be disposed between the protrusions of the first body member; and

a shaft member inserted through the first body member and the second body member to allow the first body member and the second body member to rotate,

wherein the first substrate member is attached to the first attachment part of the first body member and the second substrate member is attached to the second attachment member of the second body member.
The bar type LED lighting apparatus according to claim 6, wherein the shaft member fixes the first body member and the second body member to rotated positions and releases the first body member and the second body member from the rotated positions.
A bar type LED lighting apparatus, comprising:

a base member having hinges at both longitudinal sides;

a plurality of spaced first protrusions that is rotated by hinges disposed at a side of the base member;

a plurality of second protrusions that is rotated by hinges disposed at the other side of the base member and spaced to be disposed between the first protrusions; and

LED modules attached to the first protrusions and the second protrusions.
The bar type LED lighting apparatus according to claim 8, wherein the first protrusions are connected by first connecting portions to form a first substrate member and the second protrusions are connected by second connecting portions to form a second substrate member.
The bar type LED lighting apparatus according to claim 8, wherein the first protrusions and the second protrusions are separated and independently hinged to the base member by the hinges.
The bar type LED lighting apparatus according to claim 8, wherein the hinge fixes the first protrusions and second protrusions to rotated positions and releases the first protrusions and the second protrusions from the rotated positions.
The bar type LED lighting apparatus according to claim 9, wherein a first step having a smaller thickness than the first protrusion is formed at an end of the first protrusion, a second step having a smaller thickness than the second protrusion is formed at an end of the second protrusion, the first connecting portion is formed to correspond to the step of the first protrusion and the second connecting portion is formed to correspond to the step of the second protrusion.