Lighting apparatus

• US 11,002,426 B2
• Filed: 04/16/2019
• Issued: 05/11/2021
• Est. Priority Date: 10/26/2016
• Status: Active Grant

• Current Assignee: Opple Lighting Co., Ltd.
• Original Assignee: Opple Lighting Co., Ltd.
• Inventors: Liu, Chaobo
• Primary Examiner(s): Coughlin, Andrew J
• Assistant Examiner(s): Apenteng, Jessica M
• Application Number:
  US16/386,128
• Publication Number:
  US 20190242552A1
• Time in Patent Office: 756 Days
• Field of Search: 362294
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 17/16 by deformation of parts; Snap action mounting
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/508 of electrical circuits
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 5/02 of prismatic shape F21V5/04 takes precedence
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F21V 7/041 with conical or pyramidal surface
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The present disclosure discloses a lighting apparatus, including a lamp body, an optical element connected with the lamp body, a driving power source assembly, a light source assembly and a reflecting device configured to provide a secondary light distribution for the light source assembly which are received in the lamp body; the reflecting device is provided with a light inlet, a light outlet and a reflecting wall located between the light inlet and the light outlet; the reflecting wall is transparent, and includes an internal surface and an external surface; the internal surface includes a plurality of saw-tooth structures, each of the saw-tooth structures includes a first refracting surface and a second refracting surface intersected with each other, two ends of each of the saw-tooth structures extend towards the light inlet and the light outlet; and the light source assembly is disposed at the light inlet of the reflecting device.

Claims

1. A lighting apparatus, comprising a lamp body, an optical element connected with the lamp body, a light source assembly received in the lamp body, a reflecting device received in the lamp body and configured to provide a light distribution for the light source assembly, and a driving power source assembly received in the lamp body and electrically connected with the light source assembly;

and wherein;

the reflecting device is provided with a light inlet, a light outlet and a reflecting wall located between the light inlet and the light outlet, the reflecting wall is transparent, and the reflecting wall comprises an internal surface and an external surface;

the internal surface comprises a plurality of saw-tooth structures arranged continuously, each of the saw-tooth structures comprises a first refracting surface and a second refracting surface intersected with each other, and two ends of each of the saw-tooth structures extend towards the light inlet and the light outlet;

the light source assembly is disposed at the light inlet of the reflecting device;

the first refracting surface and the second refracting surface of the saw-tooth structure are intersected with each other to generate a ridged line; and

an included angle between a tangent line of any point on the ridged line and a plane where the light inlet is located is smaller than A, wherein A is 40°

.

2. The lighting apparatus according to claim 1, wherein the reflecting device is in an annular shape, and the reflecting device has uniform thickness.

3. The lighting apparatus according to claim 1, wherein the first refracting surface and the second refracting surface are perpendicular to each other.

4. The lighting apparatus according to claim 1, wherein the external surface of the reflecting wall is a smooth wall and is a total reflection wall.

5. The lighting apparatus according to claim 1, wherein a diameter of the light inlet is smaller than a diameter of the light outlet, and the two ends of the saw-tooth structure extend into at least one of the light inlet and the light outlet.

6. The lighting apparatus according to claim 1, wherein, when a material of the reflecting wall is polycarbonate, A equals to 38°

; and

when the material of the reflecting wall is acrylic, A equals to 30°

.

7. The lighting apparatus according to claim 1, wherein two reflecting walls opposite to each other are provided, and each of the reflecting walls is in a flat plate shape.

8. The lighting apparatus according to claim 7, wherein the reflecting device further comprises a connecting plate disposed between the reflecting walls.

9. The lighting apparatus according to claim 1, wherein the lighting apparatus further comprises a heat sink received in the lamp body, and both of the light source assembly and the driving power source assembly are received in the heat sink.

10. The lighting apparatus according to claim 9, wherein an upper end face and a lower end face of the heat sink, and/or, an upper surface and a lower surface of the heat sink, are disposed between the optical element and the lamp body in a manner of abutting against the optical element and the lamp body.

11. The lighting apparatus according to claim 1, wherein the light source assembly and the driving power source assembly are disposed integrally or disposed separately.

12. The lighting apparatus according to claim 1, wherein:

the driving power source assembly and the light source assembly are disposed separately;

the driving power source assembly comprises an annular-shaped power source plate and a driving power source located at one side of the power source plate; and

the light source assembly is located at an inner side of the power source plate.

13. The lighting apparatus according to claim 1, wherein:

the lighting apparatus comprises a first staged reflector and a second staged reflector; and

the reflecting device is the first staged reflector, and the optical element is the second staged reflector in a form of reflex housing.

14. The lighting apparatus according to claim 1, wherein the lighting apparatus further comprises a connecting part sleeved at a periphery of the lamp body, and the connecting part is connected with the lamp body and the optical element.

15. The lighting apparatus according to claim 14, wherein the optical element comprises a surface ring and a brightness balance plate located at an inner side of the surface ring.

16. The lighting apparatus according to claim 15, wherein the surface ring comprises a main body in a vertical, circular ring shape, and an annular surface which is connected integrally with the main body and is in a horizontal, circular ring shape;

the main body is connected with the lamp body and the optical element.

17. A method of manufacturing a lighting apparatus, comprising:

providing a lamp body;

connecting an optical element with the lamp body;

receiving a light source assembly in the lamp body;

receiving a reflecting device in the lamp body, wherein the reflecting device is configured to provide;

a light distribution for the light source assembly, and a driving power source assembly received in the lamp body and electrically connected with the light source assembly;

providing the reflecting device with a light inlet, a light outlet and a reflecting wall located between the light inlet and the light outlet, wherein the reflecting wall is transparent, and the reflecting wall comprises an internal surface and an external surface, wherein the internal surface comprises a plurality of saw-tooth structures arranged continuously, each of the saw-tooth structures comprises a first refracting surface and a second refracting surface intersected with each other, and two ends of each of the saw-tooth structures extend towards the light inlet and the light outlet; and

disposing the light source assembly at the light inlet of the reflecting device,

wherein the first refracting surface and the second refracting surface of the saw-tooth structure are intersected with each other to generate a ridged line, and an included angle between a tangent line of any point on the ridged line and a plane where the light inlet is located is smaller than 40°

.

18. The method according to claim 17, further comprising:

providing a connecting part sleeved at a periphery of the lamp body and

connecting the connecting part with the lamp body and the optical element.