Airfield lighting apparatus

Patent metadata

Field	Value
Publication number	US-9470407-B2
Application number	US-201313778634-A
Country	US
Kind code	B2
Filing date	Feb 27, 2013
Priority date	Aug 31, 2010
Publication date	Oct 18, 2016
Grant date	Oct 18, 2016

Abstract

Lighting apparatus for airports, in particular flush light, having housing with a housing base and a housing top that includes a recess for receiving a light disc. Light disc facilitates the emission of light from a light source, disposed in the interior of the housing, to the surroundings. A light source carrier on which the light source is mounted is attached to a heat transfer block locked in a recess of the housing top such that edges and/or at least partially flat sides of the heat transfer block are in direct contact with the corresponding sides of the recess.

First claim

The invention claimed is:

1. A lighting apparatus for airports comprising:
a housing having a bottom housing part and a housing top,
wherein the housing top comprises a first recess sized to fit around a lens affixed therein with a seal,
wherein said lens is structured to transmit light to the ambient environment from a light source arranged in an interior space of the housing,

a light source carrier on which the light source is mounted,
wherein the light source carrier is fixed to an upper surface of a heat-conducting block, said upper surface being oblique with respect to a lower surface of the heat-conducting block,
wherein said heat-conducting block is secured in a second recess formed in a bottom surface of the housing top such that said upper surface faces said bottom surface,
wherein at least one of the peripheral sides and at least partly flat sides of the heat-conducting block rest directly on corresponding sides of the second recess, and
wherein the heat-conducting block is detachably fixed to the housing top, and

reflectors optically connecting the light source with said ambient environment through said lens,
each of said reflectors structured to change both a direction of propagation and a curvature of a wavefront of light upon propagating of said light from the light source to the lens,
each of said reflectors disposed at at least partly flat side of the heat conducting block.

2. A lighting apparatus according to claim 1 ,
wherein the heat conducting block comprises
a first surface section structured (i) to accommodate the light source carrier and (ii) to dissipate heat, and
a second surface section structured to effectuate at least one of diverting a power supply and dissipating heat, said second surface section being adjacent to the first surface section.

3. A lighting apparatus according to claim 2 ,
wherein at least one of the light source carrier and a reflector associated with the light source is fixed to the heat-conducting block by a screwed connection.

4. A lighting apparatus according to claim 2 ,
wherein only a circumferential edge of the bottom housing part is connected to a circumferential edge of the housing top.

5. A lighting apparatus according to claim 2 ,
wherein the bottom housing part includes a cavity, said cavity containing triggering electronics,
said triggering electronics being electrically connected to a terminal end of the power supply, and
wherein the light source carrier is arranged as a printed circuit board.

6. A lighting apparatus according to claim 2 ,
wherein at least one of the heat-conducting block and the housing top and the bottom housing part consists of a metal material.

7. A lighting apparatus according to claim 1 ,
wherein the heat conducting block is arranged in a form-fitting manner in the second recess of the housing top.

8. A lighting apparatus according to claim 7 ,
wherein at least one of the light source carrier and a reflector associated with the light source is fixed to the heat-conducting block by a screwed connection.

9. A lighting apparatus according to claim 7 ,
wherein only a circumferential edge of the bottom housing part is connected to a circumferential edge of the housing top.

10. A lighting apparatus according to claim 7 ,
wherein the bottom housing part includes a cavity, said cavity containing triggering electronics,
said triggering electronics being electrically connected to a terminal end of the power supply, and
wherein the light source carrier is arranged as a printed circuit board.

11. A lighting apparatus according to claim 7 ,
wherein at least one of the heat-conducting block and the housing top and the bottom housing part consists of a metal material.

12. A lighting apparatus according to claim 1 ,
wherein at least one of the light source carrier and a reflector associated with the light source is fixed to the heat-conducting block by a screwed connection.

13. A lighting apparatus according to claim 12 ,
wherein only a circumferential edge of the bottom housing part is connected to a circumferential edge of the housing top.

14. A lighting apparatus according to claim 12 ,
wherein the bottom housing part includes a cavity, said cavity containing triggering electronics,
said triggering electronics being electrically connected to a terminal end of the power supply, and
wherein the light source carrier is arranged as a printed circuit board.

15. A lighting apparatus according to claim 12 ,
wherein at least one of the heat-conducting block and the housing top and the bottom housing part consists of a metal material.

16. A lighting apparatus according to claim 1 ,
wherein only a circumferential edge of the bottom housing part is connected to a circumferential edge of the housing top.

17. A lighting apparatus according to claim 1 ,
wherein the bottom housing part includes a cavity, said cavity containing triggering electronics,
said triggering electronics being electrically connected to a terminal end of the power supply, and
wherein the light source carrier is arranged as a printed circuit board.

18. A lighting apparatus according to claim 1 ,
wherein at least one of the heat-conducting block and the housing top and the bottom housing part consists of a metal material.

19. A lighting apparatus for airports comprising:
a housing having
a housing top defining a top surface and containing first and second apertures through said top surface, said first and second apertures disposed opposite each other with respect to an axis that is perpendicular to said top surface;
a housing bottom defining, when detachably affixed to the housing top, an interior volume therebetween;
a heat-conducting element removably disposed in a recess of a bottom surface of the housing top; and
first and second translucent windows affixed in said first and second apertures;

a light source carrier fixed to a heat-conducting block;
first and second light sources mounted on said light source carrier; and
first and second reflectors optically connected with the first and second light sources, respectively, each of said first and second reflectors having two reflective wings merging with one another along a curved line.

20. A lighting apparatus according to claim 19 , wherein said first and second light sources are disposed opposite each other with respect to an axis that is perpendicular to an upper surface of the heat-conducting block such that, when the light source carrier with said light sources therein are operably placed in said interior volume, said light sources are respectively disposed in optical communication with ambient surrounding said lighting apparatus through said first and second reflectors and said first and second translucent windows.

21. A lighting apparatus according to claim 19 , wherein at least one of the light source carrier and a reflector associated with a light source is fixed to the heat-conducting block with a screwed connection.

22. A lighting apparatus according to claim 19 , wherein said curved line is transverse to an upper surface of the heat-conducting block.

23. A lighting apparatus according to claim 19 , wherein only a circumferential edge of the housing bottom is connected to a circumferential edge of the housing top.

Assignees

• Hella Kgaa Hueck & Co
• Hella Kgaa Hueck & Co

Inventors

• Abel Bjorn
• Auras Klaus
• Robbecke Thomas Albert
• Ruther Ralf

Classifications

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V29/71

  using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements · CPC title

• F21V29/713

  in direct thermal and mechanical contact of each other to form a single system · CPC title

• F21V29/70

  characterised by passive heat-dissipating elements, e.g. heat-sinks · CPC title

• F21V17/12

  by screwing · CPC title