CN203309712U

CN203309712U - LED direct type panel lamp

Info

Publication number: CN203309712U
Application number: CN2013202549353U
Authority: CN
Inventors: 杨静; 邓诗涛
Original assignee: Opple Lighting Electrical Appliance Zhongshan Co Ltd
Current assignee: Opple Lighting Electrical Appliance Zhongshan Co Ltd
Priority date: 2013-05-13
Filing date: 2013-05-13
Publication date: 2013-11-27
Anticipated expiration: 2023-05-13

Abstract

The utility model provides an LED direct type panel lamp which comprises an LED light source (10), a lens (20), a diffusion plate (30), a lamp body (40) and an optical cavity A. The optical cavity A is formed by the diffusion plate (30) and the lamp body (40), light emitted from the LED light source (10) is transmitted in the optical cavity A back and forth after passing through the lens (20) and through the optical cavity A formed by the diffusion plate (30) and the lamp body (40), and then the light is emitted out from the diffusion plate (30).

Description

A kind of LED straight-down negative panel light fixture

Technical field

The present invention relates to lighting technical field, especially a kind of LED straight-down negative panel light fixture.

Background technology

LED(Light Emitting Diode, light emitting diode) have the advantages such as energy-saving and environmental protection, be widely used in the every field of living, producing.Along with the LED light fixture of such the having of the tool characteristics such as low-carbon (LC), energy-saving and environmental protection, life-span be long more and more is subject to social parent, look at, how improving luminous efficiency, provide a kind of luminous uniform panel light fixture, is one of current lighting technical field problem demanding prompt solution.

Summary of the invention

Technical scheme of the present invention is for providing a kind of LED straight-down negative panel light fixture, comprise: LED light source (10), lens (20), diffuser plate (30), lamp body (40) and an optics cavity A, above-mentioned optics cavity A consists of diffuser plate (30) and lamp body (40), the light sent from LED light source (10), via lens (20), by diffuser plate (30) and the formed optics cavity A of lamp body (40), light is propagated back and forth in optics cavity A, until from diffuser plate (30) outgoing again.

Preferably, above-mentioned light fixture also can comprise a support (50).

Preferably, above-mentioned support (50) is arranged in optics cavity A.

Preferably, said lens (20) is placed on (50) on support, and the light from LED light source (10) sends, pass through in the propagation back and forth between (50) on diffuser plate (30) and support, until from diffuser plate (30) outgoing via lens (20).

Preferably, above-mentioned LED light source (10) can form array of source, and lens (20) can form lens arra.

Preferably, said lens (20) includes first plane of incidence (21), second plane of incidence (22), the first reflecting surface (23), the second reflecting surface (24) and exiting surface (25), first plane of incidence (21) and second plane of incidence (22) of lens (20) are divided into two parts by incident light, part light passes through first plane of incidence (21) via the first reflecting surface (23) and exiting surface (25), then from diffuser plate (30) outgoing; Another part light, by second plane of incidence (22), also via the first reflecting surface (23) and exiting surface (25), is finally also gone up outgoing from diffuser plate (30) after the second reflecting surface (24).

Preferably, above-mentioned the first reflecting surface (23) subregion is frosting.

Preferably, above-mentioned the first reflecting surface (23) is taper seat, and its profile is upside-down triangle shape.

Preferably, the surperficial available paint of above-mentioned support (50) or dusting form high diffuse surface.

Preferably, by regulating the distance between above-mentioned support (50) and diffuser plate (30), control light and realize uniform.

Preferably, some white diffuse reflection printing points are set on above-mentioned diffuser plate (30).

Preferably, above-mentioned LED light source (10) is the high-power packaged LED of 1W ~ 3W.

The accompanying drawing explanation

Fig. 1 is the package assembly schematic diagram of the embodiment of the present invention one;

Fig. 2 is the structure exploded perspective view of the embodiment of the present invention one;

Fig. 3 is the lens arrangement schematic diagram of the embodiment of the present invention one;

Fig. 4 is that the lens light lineation of the embodiment of the present invention one is thought the propagation path schematic diagram;

Fig. 5 is the interior index path of the lamp affixed to the ceiling of the embodiment of the present invention one;

Fig. 6 is the supporting structure schematic diagram of the embodiment of the present invention one;

Fig. 7 is the interior index path of the lamp affixed to the ceiling of the embodiment of the present invention two.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, a kind of LED straight-down negative panel light fixture that the present invention proposes is described in further detail.

Fig. 1 is the package assembly schematic diagram of the embodiment of the present invention one; Fig. 2 is the structure exploded perspective view of inventive embodiments one; Fig. 3 is the lens arrangement schematic diagram of inventive embodiments one; Fig. 4 is that the lens light lineation of inventive embodiments one is thought the propagation path schematic diagram; Fig. 6 is the supporting structure schematic diagram of inventive embodiments one.

Fig. 5 and Fig. 7 are two preferred embodiments of the present invention, and Fig. 5 is embodiment mono-, and Fig. 7 means embodiment bis-.

As shown in Fig. 1-6, in the embodiment of the present invention one, this LED straight-down negative panel light fixture mainly comprises LED light source 10, lens 20, diffuser plate 30, lamp body 40 and support 50.In scheme, by a kind of LED straight-down negative panel light fixture is provided, adopt lens 20, the light that will send from LED light source 10, the directive peripheral region, by diffuser plate 30 and the formed optics cavity A that is similar to LGP of support 50, light is propagated back and forth in by diffuser plate 30 and the formed optics cavity A of support 50, until from diffuser plate 30 outgoing again.

Further, in the embodiment of the present invention one, LED light source 10 can form array of source, and lens 20 can form lens arra, lens arra and array of source correspondence.And for each lens unit (as shown in Figure 3), lens 20 include first plane of incidence 21, second plane of incidence 22, the first reflecting surface 23, the second reflecting surface 24 and exiting surface 25.Wherein, first plane of incidence 21 and second plane of incidence 22 of lens 20 are divided into two parts by incident light, and a part of light via the first reflecting surface 23, pools directional light by first plane of incidence 21; Another part light, by second plane of incidence 22, also via the first reflecting surface 23, also becomes directional light after the second reflecting surface 24, the optical axis direction of two parts directional light is consistent, and all from exiting surface 25 outgoing.Like this, scioptics 20, light direction propagation towards periphery.Such light is propagated and is belonged to the ideal propagation path at lens, as shown in Figure 4.

In embodiments of the present invention, because lens first plane of incidence 21, second plane of incidence 22 and the second reflecting surface 24 can be according to TIR(Total Internal Reflector) lens design that (the TIR lens are that incident light is divided into to two-way, one road is from the structure outgoing of similar convex lens, one tunnel utilizes total reflection to carry out bright dipping, improves light extraction efficiency with this).The first reflecting surface 23 can be taper seat, is dels from the profile of lens 20, or free form surface.In this programme, frosting can be made in 23 a certain sections zones of the first reflecting surface, form semi-transparent semi-reflecting effect and (as shown in Figure 4, when we design lens, be to allow most of light get on face 23, total reflection occurs.If but face 23 is made to cloudy surface, and just destroy total reflection, allow a part of light transmission go out.), the outgoing of sub-fraction light so both can have been arranged, can ensure again more light directive peripheral region.The light that LED light source 10 sends is divided into two parts through first plane of incidence 21 and second plane of incidence 22 of lens 20 by incident light, and a part of light passes through first plane of incidence 21 via the first reflecting surface 23 and exiting surface 25, then from diffuser plate 30 outgoing, as shown in rays2.Another part light is by second plane of incidence 22, after the second reflecting surface 24 also via the first reflecting surface 23 and exiting surface 25, in by support 50 and the formed optics cavity A of diffuser plate 30, propagate back and forth or reflection, until from outgoing on diffuser plate 30, as shown in rays1.

Therefore, in embodiments of the present invention, because LED light source 10 is area sources, and after frosting is made in some zone of the first reflecting surface 23, light is also just not all to belong to ideal propagation path (from the parallel outgoing of exiting surface 25), but an angle of divergence is arranged, as shown in Figure 5.Namely from the light of lens 20 exiting surface 25 outgoing, process is by support 50 and the formed optics cavity A of diffuser plate 30, propagating back and forth or reflection, until from outgoing on diffuser plate 30.

In addition, in this programme, the surperficial available paint of support 50 or dusting form high diffuse surface.And can perforate on support (as shown in Figure 6), just in time lens 20 are put in above-mentioned perforate.Support 50 and diffuser plate 30 have just formed the airtight optics cavity A that is similar to LGP like this.In addition, this programme can also be regulated the distance of 30 of support 50 and diffuser plates, controls light and realizes uniform.

Simultaneously, also some white diffuse reflection printing points can be set on diffuser plate 30, be used for controlling the outgoing of light, further obtain uniform exiting surface.

In embodiments of the present invention, LED light source 10 is selected the high-power packaged LED of 1W ~ 3W, as the XPG of Cree, or SMT encapsulation 1W LED, as AOT 3030 etc.

In the embodiment of the present invention two, this LED straight-down negative panel light fixture mainly comprises LED light source 10, lens 20, diffuser plate 30 and lamp body 40.Be illustrated in figure 7 the interior index path of lamp affixed to the ceiling of the embodiment of the present invention two.

In this programme, because LED light source 101 is area sources, and after some zone of reflecting surface 23 makes frosting, light just and be not all to belong to the ideal propagation path, but has an angle of divergence.Namely from the light of lens 201 outgoing, process is by diffuser plate 301 and the formed optics cavity A of lamp body 401, propagating back and forth or reflection, until from outgoing on diffuser plate 301.

In embodiments of the present invention, the corresponding lens 201 of a LEDs light source 101, namely lens arra is corresponding with array of source.

Above description of the preferred embodiment of the present invention is in order to illustrate and to describe, not want limit of the present invention or be confined to disclosed concrete form, obviously, may make many modifications and variations, these modifications and variations may be obvious to those skilled in the art, within should being included in the scope of the present invention by the appended claims definition.

Claims

1. LED straight-down negative panel light fixture, comprise: LED light source (10), lens (20), diffuser plate (30), lamp body (40) and an optics cavity A, it is characterized in that described optics cavity A consists of diffuser plate (30) and lamp body (40), the light sent from LED light source (10), via lens (20), by diffuser plate (30) and the formed optics cavity A of lamp body (40), light is propagated back and forth in optics cavity A, until from diffuser plate (30) outgoing again.

2. light fixture according to claim 1, is characterized in that described light fixture also can comprise a support (50).

3. light fixture according to claim 2, is characterized in that described support (50) is arranged in optics cavity A.

4. light fixture according to claim 2, it is characterized in that, described lens (20) are placed on (50) on support, the light sent from LED light source (10), via lens (20), pass through in the propagation back and forth between (50) on diffuser plate (30) and support, until from diffuser plate (30) outgoing.

5. light fixture according to claim 1, is characterized in that described LED light source (10) can form array of source, and lens (20) can form lens arra.

6. light fixture according to claim 1, it is characterized in that described lens (20) include first plane of incidence (21), second plane of incidence (22), the first reflecting surface (23), the second reflecting surface (24) and exiting surface (25), first plane of incidence (21) and second plane of incidence (22) of lens (20) are divided into two parts by incident light, part light passes through first plane of incidence (21) via the first reflecting surface (23) and exiting surface (25), then from diffuser plate (30) outgoing; Another part light, by second plane of incidence (22), also via the first reflecting surface (23) and exiting surface (25), is finally also gone up outgoing from diffuser plate (30) after the second reflecting surface (24).

7. light fixture according to claim 6, is characterized in that described the first reflecting surface (23) subregion is frosting.

8. light fixture according to claim 6, is characterized in that described the first reflecting surface (23) is taper seat, and its profile is upside-down triangle shape.

9. light fixture according to claim 2, is characterized in that the surperficial available paint of described support (50) or dusting form high diffuse surface.

10. light fixture according to claim 1, is characterized in that on described diffuser plate (30) arranging some white diffuse reflection printing points.

11. light fixture according to claim 1, is characterized in that described LED light source (10) is the high-power packaged LED of 1W～3W.