US20070171632A1 - Half-level light signaling device - Google Patents
Half-level light signaling device Download PDFInfo
- Publication number
- US20070171632A1 US20070171632A1 US10/593,991 US59399105A US2007171632A1 US 20070171632 A1 US20070171632 A1 US 20070171632A1 US 59399105 A US59399105 A US 59399105A US 2007171632 A1 US2007171632 A1 US 2007171632A1
- Authority
- US
- United States
- Prior art keywords
- cap
- signaling device
- antenna
- casing
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000011664 signaling Effects 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
- H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
- H05B47/22—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel with communication between the lamps and a central unit
Definitions
- the present invention relates to the technical field concerning transmission of radio-frequency signals from light sources, in particular from half-level signaling devices. DESCRIPTION OF THE PRIOR ART
- such signaling devices include a casing defined by a lower part embedded in the ground and a metallic cap protruding from the casing and housing, in one or more separate seats, suitable prisms for lighting of the surrounding area.
- the power and control circuitry is situated in the part embedded in the ground, in order to feed the light source and to check its operational state and its physical integrity.
- the cap is made of a material, which bears the continuative action of the exogenous agents and of the mechanical stresses of compression, caused by the passage of possible means.
- These light sources usually constitute the loads of lighting equipments of a certain extension and importance, which supply airports or anyway areas, in which the operational continuity of the above apparatuses is essential for security.
- each load must have an antenna for this purpose.
- the half-level light signaling device is made of metallic material, therefore the electromagnetic wave emitted by the antenna possibly introduced into the casing would be strongly weakened, and consequently the comprehensibility of the information signal contained therein would be put at risk.
- the degradation of the wave in input/output of the light signaling device can be limited by a suitable housing of the antenna made in the cap protruding from the ground, which mutually isolates the metallic parts.
- the above solution facilitates the signal transmission, limiting its weakening to minimum, from the other side, it is expensive and complicated because it requires, as it has been noted, the definition of a suitable recess containing the antenna in the metallic cap and of a suitable isolation system between the antenna and the metallic part embedded in the ground.
- the object of the present invention is to propose a half-level signaling device, in which the cap—antenna assembly allows a transmission/reception of the signal, free of any weakening or deformation.
- Another object of the present invention is to propose the above cap—antenna assembly, which optimizes the isolation with respect to the mass of the antenna and which does not jeopardize the cap mechanical resistance.
- a further object of the present invention is to propose a simple technical solution, which is easy to realize and allows to reduce the production costs.
- FIG. 1 is a top view of a cap for a half-level light signaling device, proposed by the present invention
- FIG. 2 is a schematic section view taken along II-II of FIG. 1 .
- the reference numeral 10 indicates a casing formed by a lower part 4 , shown schematically and embedded in the ground (for example road surface, aircrafts runways, etc.) and the reference numeral 1 indicates the cap protruding from the ground.
- An antenna 2 connected to the cap 1 , has terminals 5 a and 5 b connected to the circuitry situated in the lower part 4 of the light signaling device, not shown, as it is known.
- the cap includes one or more apertures 3 a and 3 b for housing suitable prisms (not shown, as they are known), aimed at sending relative light beams, generated by one or more lamps (not shown) inserted in the lower part 4 of the casing, to the surrounding area.
- the cap is obtained from a synthetic resin, by molding.
- the antenna is introduced into the mold before the molding operation, so that at the end it is completely dipped to form one body with the cap.
- the cap made of metallic material, forms seats 9 , which receive means (not shown) for removably fastening the cap to the lower part 4 .
- prisms can be introduced into the mold during the molding operation.
- the prisms are rigidly fastened to the cap, forming a single body therewith.
- the cap—antenna assembly defines an extremely compact and rigid technical solution, which allows a maximum reduction of the production costs.
- the isolating material constituted by synthetic resin, which forms the cap ensures the best isolation and working of the antenna, avoiding the weakening mentioned in the introductory note.
- a further advantage of the present invention lies in the fact that it allows a perfect anchorage of the antenna with the cap containing it, avoiding any relative movement between the two considered elements, thus protecting it from external causes, such as atmospheric agents and/or mechanical stresses.
- the production of the prism by molding allows, during the design step, the antenna to be situated very accurately, so as to allow a prefixed irradiation angle for the transmission/reception of the electromagnetic waves from/to the antenna.
Abstract
Half-level light signaling device is formed by a casing, including a lower part, which houses electrical and/or electronic circuits and at least one light source, and a cap protruding from the ground and removably fastened to the lower part. The cap has at least one aperture, to which a prism is connected, as to send outwards a light beam produced by the light source. The signaling device includes at least one antenna, embedded in the isolating material making up the cap, and having the terminals accessible from the lower part of the casing.
Description
- The present invention relates to the technical field concerning transmission of radio-frequency signals from light sources, in particular from half-level signaling devices. DESCRIPTION OF THE PRIOR ART
- As it is known, such signaling devices include a casing defined by a lower part embedded in the ground and a metallic cap protruding from the casing and housing, in one or more separate seats, suitable prisms for lighting of the surrounding area.
- The power and control circuitry is situated in the part embedded in the ground, in order to feed the light source and to check its operational state and its physical integrity.
- The cap is made of a material, which bears the continuative action of the exogenous agents and of the mechanical stresses of compression, caused by the passage of possible means.
- These light sources usually constitute the loads of lighting equipments of a certain extension and importance, which supply airports or anyway areas, in which the operational continuity of the above apparatuses is essential for security.
- Thus, it is necessary to prepare a of radio-frequency transmission system, which is safer, cheaper and more flexible than a cable system (see EP1239704), which allows exchange of information concerning the operational state of each element of the system with other surrounding elements and with a suitable central Unit. Therefore, each load must have an antenna for this purpose.
- As it is known, the half-level light signaling device is made of metallic material, therefore the electromagnetic wave emitted by the antenna possibly introduced into the casing would be strongly weakened, and consequently the comprehensibility of the information signal contained therein would be put at risk.
- The degradation of the wave in input/output of the light signaling device can be limited by a suitable housing of the antenna made in the cap protruding from the ground, which mutually isolates the metallic parts.
- From the other side, the so obtained recess would require an increase of the resulting thickness of the cap, needed to maintain intact the mechanical compactness with respect to the known solutions.
- From one side, the above solution facilitates the signal transmission, limiting its weakening to minimum, from the other side, it is expensive and complicated because it requires, as it has been noted, the definition of a suitable recess containing the antenna in the metallic cap and of a suitable isolation system between the antenna and the metallic part embedded in the ground.
- The object of the present invention is to propose a half-level signaling device, in which the cap—antenna assembly allows a transmission/reception of the signal, free of any weakening or deformation.
- Another object of the present invention is to propose the above cap—antenna assembly, which optimizes the isolation with respect to the mass of the antenna and which does not jeopardize the cap mechanical resistance. A further object of the present invention is to propose a simple technical solution, which is easy to realize and allows to reduce the production costs. The above mentioned objects are obtained in accordance with the contents of the claims.
- The characteristic features of the invention will be pointed out in the following description of some preferred but not exclusive embodiments, with reference to the enclosed figures, in which:
-
FIG. 1 is a top view of a cap for a half-level light signaling device, proposed by the present invention; -
FIG. 2 is a schematic section view taken along II-II ofFIG. 1 . - Regarding the above Figures, the
reference numeral 10 indicates a casing formed by alower part 4, shown schematically and embedded in the ground (for example road surface, aircrafts runways, etc.) and thereference numeral 1 indicates the cap protruding from the ground. - An
antenna 2, connected to thecap 1, hasterminals lower part 4 of the light signaling device, not shown, as it is known. - The cap includes one or
more apertures lower part 4 of the casing, to the surrounding area. The cap is obtained from a synthetic resin, by molding. In particular, the antenna is introduced into the mold before the molding operation, so that at the end it is completely dipped to form one body with the cap. - The cap, made of metallic material, forms
seats 9, which receive means (not shown) for removably fastening the cap to thelower part 4. - According to an interesting variant, besides the antenna, also prisms can be introduced into the mold during the molding operation.
- The prisms are rigidly fastened to the cap, forming a single body therewith.
- The cap—antenna assembly, with the possible above described variant, defines an extremely compact and rigid technical solution, which allows a maximum reduction of the production costs.
- Moreover, the isolating material constituted by synthetic resin, which forms the cap ensures the best isolation and working of the antenna, avoiding the weakening mentioned in the introductory note.
- A further advantage of the present invention lies in the fact that it allows a perfect anchorage of the antenna with the cap containing it, avoiding any relative movement between the two considered elements, thus protecting it from external causes, such as atmospheric agents and/or mechanical stresses.
- The production of the prism by molding allows, during the design step, the antenna to be situated very accurately, so as to allow a prefixed irradiation angle for the transmission/reception of the electromagnetic waves from/to the antenna.
- It is understood that what above has been described as a mere, not limiting example. Therefore, it is obvious that any changes or variants applied thereto remain within the protective scope defined by the following claims.
Claims (3)
1. Half-level light signaling device formed by a casing, including a lower part, which houses electrical and/or electronic circuits and at least one light source, and a cap protruding from the ground and removably fastened to said lower part and having at least one aperture, to which a prism is connected, so as to send outwards a light beam produced by the light source, characterized in that it includes at least one antenna, embedded in the isolating material making up the cap, and having the terminals accessible from the lower part of the casing.
2. Signaling device, as claimed in claim 1 , characterized in that said cap is made of synthetic resin.
3. Signaling device, as claimed in claim 1 , characterized in that said prism is rigidly fastened to the cap.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000025U ITBO20040025U1 (en) | 2004-03-23 | 2004-03-23 | SEMI-LEVEL LIGHT SIGNALER |
ITBO2004U000025 | 2004-03-23 | ||
PCT/IB2005/000712 WO2005094136A1 (en) | 2004-03-23 | 2005-03-18 | Half-level light signaling device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070171632A1 true US20070171632A1 (en) | 2007-07-26 |
Family
ID=34964584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/593,991 Abandoned US20070171632A1 (en) | 2004-03-23 | 2005-03-18 | Half-level light signaling device |
Country Status (3)
Country | Link |
---|---|
US (1) | US20070171632A1 (en) |
IT (1) | ITBO20040025U1 (en) |
WO (1) | WO2005094136A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITBO20060455A1 (en) * | 2006-06-13 | 2007-12-14 | Ocem Spa | POWER SUPPLY AND CONTROL OF A LIGHT SOURCE |
EP4293819A1 (en) | 2022-06-15 | 2023-12-20 | ADB Safegate BV | Guidance light fixture with rf antenna |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132983A (en) * | 1976-01-12 | 1979-01-02 | Royal Industries, Inc. | Radio synchronized warning light system |
US5156454A (en) * | 1991-07-31 | 1992-10-20 | Daniel White | In ground recessed or projecting yard light |
US5669691A (en) * | 1995-01-27 | 1997-09-23 | Tristar Electric Inc. | Airport runway or taxiway light fixture |
US6489733B1 (en) * | 1998-04-21 | 2002-12-03 | Siemens Aktiengesellschaft | Multi-purpose lighting system for airports, roads or the like |
US20030020417A1 (en) * | 2000-06-28 | 2003-01-30 | A.L. Air Data | Lamp monitoring and control unit and method |
US7088222B1 (en) * | 2002-11-13 | 2006-08-08 | Powerflare Corporation | Ruggedized illuminating, marking, or signaling device and system |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993013984A1 (en) * | 1992-01-10 | 1993-07-22 | Guiding Star Pty, Ltd. | Pilot activated runway lighting system |
ES2101617B1 (en) * | 1993-12-31 | 1998-02-01 | Gonzalez Jose Jorba | SIGNALING CONE. |
DE19809478A1 (en) * | 1998-03-06 | 1999-09-09 | Siemens Ag | Omnidirectional flush (inset) light for airport runway |
DE29720800U1 (en) * | 1997-11-24 | 1998-01-22 | Siemens Ag | Underfloor fire for airports |
-
2004
- 2004-03-23 IT IT000025U patent/ITBO20040025U1/en unknown
-
2005
- 2005-03-18 WO PCT/IB2005/000712 patent/WO2005094136A1/en active Application Filing
- 2005-03-18 US US10/593,991 patent/US20070171632A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4132983A (en) * | 1976-01-12 | 1979-01-02 | Royal Industries, Inc. | Radio synchronized warning light system |
US5156454A (en) * | 1991-07-31 | 1992-10-20 | Daniel White | In ground recessed or projecting yard light |
US5669691A (en) * | 1995-01-27 | 1997-09-23 | Tristar Electric Inc. | Airport runway or taxiway light fixture |
US6489733B1 (en) * | 1998-04-21 | 2002-12-03 | Siemens Aktiengesellschaft | Multi-purpose lighting system for airports, roads or the like |
US20030020417A1 (en) * | 2000-06-28 | 2003-01-30 | A.L. Air Data | Lamp monitoring and control unit and method |
US7088222B1 (en) * | 2002-11-13 | 2006-08-08 | Powerflare Corporation | Ruggedized illuminating, marking, or signaling device and system |
Also Published As
Publication number | Publication date |
---|---|
WO2005094136A1 (en) | 2005-10-06 |
ITBO20040025U1 (en) | 2004-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: O.C.E.M. S.P.A., ITALY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BASILE, GIANLUIGI;REEL/FRAME:018346/0565 Effective date: 20060920 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |