LED lighting apparatus

• US 20100046233A1
• Filed: 08/22/2008
• Published: 02/25/2010
• Est. Priority Date: 08/22/2008
• Status: Active Grant

• Current Assignee: Joseph Chou, Neng-Tze Yang
• Original Assignee: Joseph Chou, Neng-Tze Yang
• Inventors: Chou, Joseph, Yang, Neng-Tze
• Granted Patent: US 7,946,735 B2
• Time in Patent Office: Days
• US Class Current: 362/296.50
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21V 7/04 Optical design

Abstract

A LED light apparatus includes a conical reflection housing and a LED light source. The reflection housing has a vertex, a light opening aligning with the vertex, an inner flat reflection surface. The LED light source includes a light head alignedly pointing towards the vertex, wherein when the light head generates light a first portion of the light is accumulatively reflected by the reflection surface towards the light opening while a second portion of the light is projected towards the non-reflection arrangement to prevent the second portion of the light being reflected back to the light source for minimizing a black spot occurring at the light opening. Accordingly, the wide light pattern is refocused into a narrow beam pattern to improve the lighting efficiency. The distribution of the light output is regulated, and the heat generation is reduced.

Claims

1. A LED lighting apparatus, comprising:

a conical reflection housing having a vertex, a light opening aligning with said vertex, and an inner taper reflection surface extending from said vertex towards said light opening; and

a LED light source which comprises a light body coaxially supported by said reflection housing and a light head aligned with said vertex, wherein when said light head generates light within said reflection housing, said light is accumulatively reflected at said reflection surface of said reflection housing for enhancing a light intensity of said light before said light is projected out of said reflection housing through said light opening.

2. The LED lighting apparatus, as recited in claim 1, wherein said reflection housing further comprises a non-reflection arrangement provided at said vertex at a position that said light head is supported within said light housing to alignedly point towards said vertex, such that when said light head generates light towards said reflection surface of said reflection housing, a first portion of said light is accumulatively reflected by said reflection surface of said reflection housing towards said light opening while a second portion of said light is projected towards said non-reflection arrangement so as to prevent said second portion of said light being reflected back to said light source for minimizing a black spot occurring at said light opening.

3. The LED light apparatus, as recited in claim 2, wherein said non-reflection arrangement contains a light passing hole formed at said vertex of said reflection housing to coaxially align with said light head such that said second portion of said light directly penetrates out of said reflection housing through said light passing hole for preventing said second portion of said light being reflected at said vertex of said reflection housing.

4. The LED lighting apparatus, as recited in claim 3, wherein a circumferential size of said light passing hole is at the same as a circumferential size of said light head and is smaller than a circumferential size of said light opening of said reflection housing.

5. The LED lighting apparatus, as recited in claim 1, wherein said light body comprises a light supporting frame coupling with said reflection housing at said light opening, and a heat dissipating arm extended from said light supporting frame to support said light head at a free end of said heat dissipating arm, such that said heat dissipating arm not only suspendedly supports said light head to align with said vertex of said reflection housing but also effectively dissipates heat generated from said light head to said reflection housing.

6. The LED lighting apparatus, as recited in claim 4, wherein said light body comprises a light supporting frame coupling with said reflection housing at said light opening, and a heat dissipating arm extended from said light supporting frame to support said light head at a free end of said heat dissipating arm, such that said heat dissipating arm not only suspendedly supports said light head to align with said vertex of said reflection housing but also effectively dissipates heat generated from said light head to said reflection housing.

7. The LED lighting apparatus, as recited in claim 1, further comprising a tubular reflection rim extended from said light opening, wherein said reflection rim has a circumferential size matching with a circumferential size of said light opening and an inner reflective surface extended from said reflection surface of said reflection housing for controlling an output angle of said light at said light opening.

8. The LED lighting apparatus, as recited in claim 6, further comprising a tubular reflection rim extended from said light opening, wherein said reflection rim has a circumferential size matching with a circumferential size of said light opening and an inner reflective surface extended from said reflection surface of said reflection housing for controlling an output angle of said light at said light opening.

9. The LED lighting apparatus, as recited in claim 7, wherein a height of said reflection rim is smaller than a height of said reflection housing for preventing multi-reflection of said light within said reflection rim.

10. The LED lighting apparatus, as recited in claim 8, wherein a height of said reflection rim is smaller than a height of said reflection housing for preventing multi-reflection of said light within said reflection rim.

11. The LED lighting apparatus, as recited in claim 1, wherein said reflection surface, having a linear slope and defining an inclination angle, extends from said vertex of said reflection housing to said light opening for enabling said first portion of said light being multi-reflected within said reflection housing.

12. The LED lighting apparatus, as recited in claim 3, wherein said reflection surface, having a linear slope and defining an inclination angle, extends from said vertex of said reflection housing to said light opening for enabling said first portion of said light being multi-reflected within said reflection housing.

13. The LED lighting apparatus, as recited in claim 10, wherein said reflection surface, having a linear slope and defining an inclination angle, extends from said vertex of said reflection housing to said light opening for enabling said first portion of said light being multi-reflected within said reflection housing.

14. The LED lighting apparatus, as recited in claim 1, wherein said reflection surface contains a plurality of discrete reflective surfaces integrally extended from said vertex of said reflection housing to said light opening, wherein each of said discrete reflective surfaces has a linear slope and defines a corresponding inclination angle for enabling said first portion of said light being multi-reflected within said reflection housing.

15. The LED lighting apparatus, as recited in claim 3, wherein said reflection surface contains a plurality of discrete reflective surfaces integrally extended from said vertex of said reflection housing to said light opening, wherein each of said discrete reflective surfaces has a linear slope and defines a corresponding inclination angle for enabling said first portion of said light being multi-reflected within said reflection housing.

16. The LED lighting apparatus, as recited in claim 10, wherein said reflection surface contains a plurality of discrete reflective surfaces integrally extended from said vertex of said reflection housing to said light opening, wherein each of said discrete reflective surfaces has a linear slope and defines a corresponding inclination angle for enabling said first portion of said light being multi-reflected within said reflection housing.

17. The LED lighting apparatus, as recited in claim 1, wherein said reflection housing contains a light passing hole formed at said vertex of said reflection housing, wherein said light head is coaxially coupled at said light passing hole to coaxially pointing towards said light opening.

18. The LED lighting apparatus, as recited in claim 17, wherein an aperture angle of said reflection housing is smaller than a light projection angle of said light head.

19. The LED lighting apparatus, as recited in claim 18, wherein said light body comprises a light supporting frame coupling with said reflection housing, and a heat dissipating arm extended from said supporting frame to support said light head at a free end of said heat dissipating arm, such that said heat dissipating arm not only suspendedly supports said light head to align with said vertex of said reflection housing but also effectively dissipates heat generated from said light head to said reflection housing.

20. The LED lighting apparatus, as recited in claim 19, further comprising a tubular reflection rim extended from said light opening, wherein said reflection rim has a circumferential size matching with a circumferential size of said light opening and an inner reflective surface extended from said reflection surface of said reflection housing for controlling an output angle of said light at said light opening.

21. The LED lighting apparatus, as recited in claim 17, wherein said reflection surface, having a linear slope and defining an inclination angle, extends from said vertex of said reflection housing to said light opening for enabling said light being multi-reflected within said reflection housing.

22. The LED lighting apparatus, as recited in claim 20, wherein said reflection surface, having a linear slope and defining an inclination angle, extends from said vertex of said reflection housing to said light opening for enabling said light being multi-reflected within said reflection housing.

23. The LED lighting apparatus, as recited in claim 17, wherein said reflection surface contains a plurality of discrete reflective surfaces integrally extended from said vertex of said reflection housing to said light opening, wherein each of said discrete reflective surfaces has a linear slope and defines a corresponding inclination angle for enabling said light being multi-reflected within said reflection housing.

24. The LED lighting apparatus, as recited in claim 20, wherein said reflection surface contains a plurality of discrete reflective surfaces integrally extended from said vertex of said reflection housing to said light opening, wherein each of said discrete reflective surfaces has a linear slope and defines a corresponding inclination angle for enabling said light being multi-reflected within said reflection housing.