CN201811033U

CN201811033U - Illuminator

Info

Publication number: CN201811033U
Application number: CN2010205085145U
Authority: CN
Inventors: 沈炳辉; 涂振兴
Original assignee: Shanghai Arex Electronics Co ltd
Current assignee: Shanghai Arex Electronics Co ltd
Priority date: 2010-08-25
Filing date: 2010-08-25
Publication date: 2011-04-27
Anticipated expiration: 2020-08-25

Abstract

The utility model discloses an illuminator with a light guide plate. The light guide plate comprises a first surface and a second surface. The first surface of the light guide plate is provided with at least an opening which extends towards the second surface to form a light inlet face. A light source is arranged in the opening of the light guide plate. Light is input into the light guide plate from the light inlet face to be away from the direction of the light inlet face. Moreover, the light travels between the first surface and the second surface in a reflection or refraction manner and finally partial light comes out of the first surface of the light guide plate in the refraction manner.

Description

A kind of lighting device

[technical field]

The utility model is a kind of lighting device, particularly a kind ofly is provided with a LGP that is opened on wherein at least, and a light source is placed the lighting device in the opening of LGP.

[background technology]

Generally be applied in the lighting device of lighting field, can be according to the demand of actual design, and be divided into straight-down negative module (direct type module) or side-light type module (side typemodule) according to the ornaments position of light source.With reference to figure 1, be the generalized section of relevant straight-down negative module lighting device in the prior art.Straight-down negative module lighting device 100 comprises: reflector plate 110, light source 120 and diffusion sheet 130.Light source 120 is arranged at 130 of reflector plate 110 and diffusion sheets, the reflex of utilizing reflector plate 110 to be provided, make light directly transfer to lighting device 100 tops via diffusion sheet 130, or the light reflection that the light source 120 that utilizes reflector plate 110 will be positioned at its top is sent upwards, can obtain preferable brightness with this, but the brightness of light source 120 positions of straight-down negative module lamp is obviously bright inadequately, therefore causes more easily telling the light source position.Therefore how making the light source homogenising of direct type backlight module by the optical design of reflecting plate 110, is a great problem.

With reference to figure 2, be the generalized section of the side-light type lighting device 200 of prior art.Side-light type module lighting device 200 except that comprise reflector plate 210, light source 220 and diffusion sheet 230, straight-down negative module lighting device 100 compared to Fig. 1 also comprises a LGP 240, its in order to import side light source 220 send light, change its direction again, penetrate so that its guiding is positive, and form area source.LGP 240 sides are incidence surfaces 242, are arranged with several light sources 220.When light source 220 by incidence surface 242 incident raies during to LGP 240, light is in LGP 240 internal reflections and refraction, and is equipped with the reflecting plate 210 under LGP 240 bottom surfaces 244, with light upwards reflection reflect light partly via end face 246.

With reference to figure 3A, be the vertical view that illustrates prior art side-light type lighting device according to Fig. 2.The side-light type module lighting device 200 of prior art, its light source 220 imports LGP 240 via the incidence surface 242 in LGP 240 outsides with light.In addition, please refer to Fig. 3 B, is the side-light type lighting device vertical view according to another embodiment of prior art.Light source 220 is arranged at incidence surface 242 outsides on LGP 240 excircles.Light will import LGP 240 via the incidence surface 242 in LGP 240 outsides.Owing to light source 220 only can be provided with respect to the incidence surface 242 in LGP 240 outsides, under the situation that the area of LGP 240 improves constantly now, keep fixedly illumination for making lighting device, promptly need to reduce the spacing of 220 settings of light source, and then increase the number of light sources that is provided with, in such event, will increase the light source usage quantity of lighting device relatively, light source also can increase its difficulty in assembling simultaneously, increases cost.

Therefore, how a kind of LGP of novelty is proposed at the problems referred to above, and the lighting device with this LGP, wherein, be provided with an opening on LGP, and form an incidence surface simultaneously, light source is arranged in this opening, then light source thus opening do not need extra structure, can reduce the loss of light, increase the light of the received light source of LGP, and then promote the efficient of whole LGP.In addition, because the area of incidence surface reduces, then required number of light sources not only can reduce, and reduces the degree of difficulty in the lighting device assembling.

[utility model content]

The utility model aims to provide a kind of lighting device that can effectively improve the inhomogeneity LGP of emergent ray briliancy and assemble easily.

The purpose of this utility model is reached by the following technical programs:

The utility model comprises light source and LGP, and wherein, LGP comprises first surface and second surface.Second surface is with respect to the first surface setting.Wherein, LGP is provided with an opening at least at first surface, and opening extends to form an incidence surface to second surface.Wherein, light source is arranged in the opening, and then light is imported LGP with the direction away from incidence surface from incidence surface, and advances between first surface and second surface in the mode of reflection or refraction.Finally, light penetrates from first surface via refraction.

Wherein, described opening shape is a polygon, or is a circle; Opening inwardly forms room in from the direction of first surface to second surface at LGP.Incidence surface extends to second surface.Light source is a light emitting diode.First surface and second surface be shaped as a circle.Opening is arranged at the central point of first surface and second surface.

By the utility model, can reduce the loss of light, increase the light of the received light source of LGP, and then promote the efficient of whole LGP.In addition, because the area of incidence surface reduces, then required number of light sources not only can reduce, and reduces the degree of difficulty in the lighting device assembling.

[description of drawings]

Fig. 1 is the generalized section of straight-down negative lighting device in the prior art.

Fig. 2 is the generalized section of side-light type lighting device in the prior art.

Fig. 3 A is the vertical view that illustrates prior art side-light type lighting device according to Fig. 2.

Fig. 3 B is the side-light type lighting device vertical view according to another embodiment of prior art.

Fig. 4 A is the LGP schematic diagram that is illustrated according to the utility model one embodiment.

Fig. 4 B is according to the A-A of Fig. 4 A generalized section along the line.

Fig. 4 C is the LGP generalized section that is illustrated according to another embodiment of the utility model.

Fig. 4 D is the LGP schematic diagram that is illustrated according to another embodiment of the utility model.

Fig. 4 E is the LGP schematic diagram that is illustrated according to another embodiment of the utility model.

Fig. 4 F is the LGP generalized section that is illustrated according to another embodiment of the utility model.

Fig. 5 A is the lighting device schematic diagram that is illustrated according to the utility model one embodiment.

Fig. 5 B is according to the A-A of Fig. 5 A generalized section along the line.

Fig. 5 C is the lighting device schematic diagram that is illustrated according to another embodiment of the utility model.

Fig. 5 D is the lighting device schematic diagram that is illustrated according to another embodiment of the utility model.

Fig. 5 E is the lighting device generalized section that is illustrated according to another embodiment of the utility model.

Primary clustering symbol description among the figure

100～straight-down negative module lighting device, 110～light source reflector plate, 120～light source, 130～diffusion sheet

200～side-light type lighting device, 210～reflector plate, 220～light source, 230～diffusion sheet

240～LGP, 242～incidence surface, 244～bottom surface, 440～LGP, 442～incidence surface

444～second surface, 446～first surface, 450～opening 452～perforation 460～interior room

520～light source, 522～circuit board, 540～LGP, 542～incidence surface, 544～second surface

546～first surface, 550～opening 552～perforation 560～interior room 570～lighting device

[specific embodiment]

With reference to the accompanying drawings in conjunction with the embodiments, the utility model is elaborated.But listed drawings and Examples only provide reference and explanation usefulness, are not to be used for the utility model is limited.

See also shown in Fig. 4 A to 4B, wherein, Fig. 4 A is the LGP schematic diagram that is illustrated according to the utility model one embodiment.Fig. 4 B is according to the A-A of Fig. 4 A generalized section along the line.LGP 440 of the present utility model as seen from the figure comprises first surface 446 and second surface 444.Second surface 444 is provided with respect to first surface 446.Wherein, LGP 440 is provided with an opening 450 in first surface 446.Opening 450 extends to form an incidence surface 442 along the direction of second surface 444.It should be noted that though present embodiment only proposes to be provided with an opening, the number of the utility model split shed is not limited to one, also can comprise more than one opening.

In the present embodiment, first surface 446 is parallel to second surface 444, shown in Fig. 4 B, but, the utility model surface 446 of winning does not limit and is parallel to second surface 444, and it also can be the LGP 440 that first surface 446 is not parallel to second surface 444, shown in Fig. 4 C.Wherein, Fig. 4 C is the LGP generalized section that is illustrated according to another embodiment of the utility model.

In the present embodiment, the shape of opening 450 of the present utility model is hexagons, shown in Fig. 4 A.In addition, be preferably a polygon in the shape of the utility model split shed, but the utility model is not as limit.But in other embodiment of the present utility model, the shape of opening 450 is not only to be defined in polygon, also can be circle (shown in Fig. 4 D) or shape arbitrarily, as long as the shape of described opening can a ccontaining light source module, and make the circuit board of light source aim at incidence surface easily, be opening shape described in the utility model.

With reference to figure 4B, the first surface 446 of LGP 440 is provided with an opening 450 again.LGP 440, extends to form incidence surface 442 to second surface 444 with the direction of first surface 446 to second surface 444 from opening 450.Simultaneously, LGP 440 extends room 460 in the definition one to second surface 444.In another embodiment, please refer to shown in Fig. 4 E, the 4F, wherein Fig. 4 E is the LGP schematic diagram that is illustrated according to another embodiment of the utility model.And Fig. 4 F is the LGP generalized section that is illustrated according to another embodiment of the utility model.LGP 440 is with the direction of first surface 446 to second surface 444, and extension incidence surface 442 is to second surface 444.LGP 440 extends incidence surface 442 to second surface 444 according to the position of opening 450, that is penetrates LGP 440 to form a perforation 452.

As mentioned above, the preferable mode of the shape of the utility model split shed is a polygon, but the utility model is not as limit.Therefore, when opening 450 be shaped as polygon the time, LGP 440 is from opening 450, with the direction of first surface 446 to second surface 444, and the number on this polygon limit relatively, and extends to second surface 444 respectively, to form the incidence surface 442 of similar number.

Again, in other embodiment of the present utility model, when opening 450 be shaped as circle or shape arbitrarily, then its incidence surface is one or more.

In this embodiment, with reference to figure 4A, the first surface 446 of LGP 440 and the shape of second surface 444 are circles, and promptly LGP 440 is shaped as round sheet.The position of opening 450 is arranged at the central point of first surface 446 and second surface 444, the i.e. center of circle.

In addition, the first surface 446 of the utility model LGP and the shape of second surface 444 be as limit, also can be polygon or shape arbitrarily.

It should be noted that the position of opening 450 of the present utility model is not limited to the central point O of first surface and second surface, the position of opening also can be arranged at the center of gravity of first surface or second surface or position arbitrarily.

With reference to figure 5A to 5B, wherein Fig. 5 A is the lighting device schematic diagram that is illustrated according to another embodiment of the utility model.Fig. 5 B is according to Fig. 5 A B-B generalized section along the line.Lighting device 570 comprises: light source 520 and LGP 540.Light source 520 is arranged at circuit board 522.Can learn by figure, the LGP 540 of the utility model lighting device 570 is identical with the embodiment of above-mentioned Fig. 4 A LGP 440, that is LGP 540 all comprises: first surface 546, second surface 544, opening 550, incidence surface 542, interior room 560, but the embodiment of the utility model lighting device 570 more comprises a light source 520.Light source 520 is electrically connected and is arranged at circuit board 522.

Light source 520 is arranged in the opening 550 of LGP 540 by circuit board 522.Light source 520 is fixed in the opening by circuit board 522, and can adjust the angle of circuit board 522, and then control light is to the light inlet angle of incidence surface 542, the light that reduces light source 520 runs off, and then increase LGP 540 received light, and the brightness of raising lighting device 570.Light is transmitted to LGP 540 from incidence surface 542 input LGPs 540 with the direction away from incidence surface 542.Light reflects between first surface and second surface or reflects, and is last, and part light penetrates from first surface 546 via refraction, forms a radiant, to reach the effect of illumination.In addition, the light source 520 in the utility model adopts a light emitting diode, but the utility model is not as limit.Described light source also can be other light-emitting device and replaces.

In lighting device 570, the opening 550 of LGP 540 is from the direction of first surface 546 to second surface 544, so that LGP 540 is inwardly formed room 560 in, shown in Fig. 5 B.Room 560 in the light source 520 of the utility model lighting device 570 is fixedly arranged on by circuit board 522.

Please refer to shown in Fig. 5 D, the 5E, wherein, Fig. 5 D is lighting device 570 generalized sections that illustrated according to another embodiment of the utility model.Can learn that by figure the LGP 540 of lighting device 570 extends incidence surface 542 to second surface 544 again with the direction of first surface 546 to second surface 544.LGP 540 is extending incidence surface 542 to second surface 544 according to the position of opening 550, that is penetrates LGP 540 to form a perforation 552.

In the present embodiment, the shape of opening 550 is hexagons.In addition, at the polygon that is shaped as of the utility model split shed, but the utility model is not as limit.In other embodiment of the present utility model, the shape of opening 550 is not only to be defined in polygon, also can be circle (shown in Fig. 5 C) or shape arbitrarily, as long as the shape of this opening can a ccontaining light source module, and the circuit board of light source is arranged at wherein easily, is opening shape described in the utility model.

In this embodiment, with reference to figure 5A, the first surface 546 of the LGP 540 of lighting device 570, and the shape of second surface 544 is circles, that is LGP 540 be shaped as round sheet.The position of opening 550 is arranged at the central point of first surface 546 and second surface 544, the i.e. center of circle.In addition, the first surface 546 of the utility model LGP and the shape of second surface 544 be as limit, also can be polygon or shape arbitrarily.

Need to prove that the position of opening 550 of the present utility model is not limited to the central point O of first surface 546 and second surface 544.The position of opening 550 also can be arranged at the center of gravity of first surface or second surface or position arbitrarily.

The above only is preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this; So all simple equivalent of doing according to the utility model claim and description change and modify, all should still belong in the scope that the utility model patent contains.

Claims

1. a lighting device comprises a light source at least; And a LGP, this LGP comprises: a first surface; And a second surface, and with respect to described first surface setting; It is characterized in that described LGP is provided with an opening at least at first surface, and described opening extends to form an incidence surface to described second surface;

Wherein said light source is arranged in the opening, described light is imported this LGP with the direction away from this incidence surface from this incidence surface, and advance between described first surface and described second surface in the mode of reflection or refraction, described light penetrates from first surface via reflecting.

2. lighting device as claimed in claim 1 is characterized in that the polygon that is shaped as of this opening.

3. lighting device as claimed in claim 1 is characterized in that the circle that is shaped as of this opening.

4. lighting device as claimed in claim 1 is characterized in that described opening from the direction of first surface to second surface, inwardly forms room at LGP.

5. lighting device as claimed in claim 1 is characterized in that described incidence surface extends to second surface.

6. lighting device as claimed in claim 1 is characterized in that described light source is a light emitting diode.

7. lighting device as claimed in claim 1 is characterized in that the circle that is shaped as of described first surface and described second surface.

8. lighting device as claimed in claim 7 is characterized in that described opening is arranged at the central point of first surface and second surface.