CN207991083U - Surface illuminating device and refrigerator with the surface illuminating device - Google Patents

Surface illuminating device and refrigerator with the surface illuminating device Download PDF

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Publication number
CN207991083U
CN207991083U CN201721905627.7U CN201721905627U CN207991083U CN 207991083 U CN207991083 U CN 207991083U CN 201721905627 U CN201721905627 U CN 201721905627U CN 207991083 U CN207991083 U CN 207991083U
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CN
China
Prior art keywords
light
illuminating device
guide plate
light guide
light source
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Active
Application number
CN201721905627.7U
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Chinese (zh)
Inventor
徐百银
刘毅波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Refrigeration Devices Wuxi Co Ltd
Panasonic R&D Center Suzhou Co Ltd
Original Assignee
Panasonic Refrigeration Devices Wuxi Co Ltd
Panasonic R&D Center Suzhou Co Ltd
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Application filed by Panasonic Refrigeration Devices Wuxi Co Ltd, Panasonic R&D Center Suzhou Co Ltd filed Critical Panasonic Refrigeration Devices Wuxi Co Ltd
Priority to CN201721905627.7U priority Critical patent/CN207991083U/en
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Abstract

The utility model provides a kind of surface illuminating device and the refrigerator with the surface illuminating device.The surface illuminating device (100) has the light source (120) of light guide plate (110) and setting in a side end face of light guide plate (110), light guide plate (110) has reflective surface (111) and light-emitting surface (112), reflective surface (111) in light guide plate (110) is formed with the multiple raised prisms (113) to adjoin each other, raised prism (113) has towards light source (120) the inclined inclined surface in side (113a), when the inclined surface (113a) and light-emitting surface (112) angulation are a in season, meet 20 °≤a≤25 °.Thereby, it is possible to while obtaining good and uniform planar light, reduce number of components, make simple in structure, reduction manufacturing cost.

Description

Surface illuminating device and refrigerator with the surface illuminating device
Technical field
The utility model is related to a kind of surface illuminating device and with the refrigerator of the surface illuminating device.
Background technology
Currently, the indoor lighting device as refrigerator, more and more using there is LED light.But the lamp of LED light Light is more dazzling and light is not soft, in order to keep the light of light soft and play beautiful effect, usually make the light of LED light with The luminous mode in face is emitted in refrigerator compartment.
In the prior art, for the effect for making lighting device realize that face shines, a kind of surface illuminating device 600 is disclosed, As shown in figure 5, in LED light 602 and transparent light guide plate 603 be wrapped in by it by frame 601, it is arranged in 603 lower part of light guide plate and expands It falls apart 604, reflective membrane 605 is pasted at back, while laser engraving has reflective spot on light guide plate 603, as a result, from LED light The light of 602 directive light guide plates 603 is to 604 sidescattering of diffuser plate.It is reflective by increasing in the surface illuminating device of the prior art Film 605 reduces the loss of light, spreads to increase the light uniformity of light emission side and soft by light by diffuser plate 604 Property.
But the surface illuminating device 600 have it is complicated, number of components is more, and the pip printed on light guide plate Need laser engraving thus such disadvantage with high costs.
Utility model content
The utility model is to complete in view of the above problems, and that its purpose is to provide a kind of number of components is few, structure is simple List and the low good surface illuminating device of face illumination effect and the refrigerator with the surface illuminating device of manufacturing cost.
To achieve the goals above, the utility model provides a kind of surface illuminating device, with light guide plate and is arranged upper The light source of a side end face of light guide plate is stated, above-mentioned light guide plate has the reflective surface of reflected light and projects the light-emitting surface of light, above-mentioned The above-mentioned reflective surface of light guide plate is formed with the multiple raised prisms for the setting that adjoins each other, from the above-mentioned above-mentioned reflective surface of light source directive Light projects after above-mentioned multiple raised prisms reflect from above-mentioned light-emitting surface, and above-mentioned protrusion prism has towards above-mentioned light source The inclined inclined surface in side meets 20 °≤a≤25 ° when the inclined surface and above-mentioned light-emitting surface angulation are a in season.
By with above structure, enabling to the light from the reflective surface of light source directive light guide plate in the inclination for protruding prism Face is totally reflected, and to equably being projected from the light-emitting surface of light guide plate as planar light, while realizing that number of components is few, structure Simple and manufacturing cost is low.
Furthermore it is preferred that above-mentioned protrusion prism is formed as the strip extended along an above-mentioned side end face for above-mentioned light guide plate When the width of shape, the section vertical with the extending direction of raised prism above-mentioned in season is b, meet 1.5mm≤b≤2.0mm.
Furthermore it is preferred that when the height of raised prism above-mentioned in season is c, meet 0.4mm≤c≤0.6mm.
Furthermore it is preferred that the edge by above-mentioned light source side in above-mentioned reflective surface is provided with buffer area, it is above-mentioned reflective Face is smooth face in the buffer area.
Furthermore it is preferred that the width L of above-mentioned buffer area is 3mm or more.
Furthermore it is preferred that having to above-mentioned light source one with the end face of above-mentioned light source opposite side for above-mentioned light guide plate rolls Oblique inclined surface, the light come from above-mentioned light source direct projection project after the inclined surface is reflected from above-mentioned light-emitting surface.
Furthermore it is preferred that when the above-mentioned inclined surface of above-mentioned end face and above-mentioned light-emitting surface angulation are d in season, meet 30°≤d≤45°。
Furthermore it is preferred that above-mentioned light guide plate is integrally formed with above-mentioned multiple prisms.
Furthermore it is preferred that above-mentioned light source is LED light bar, extend along a side end face of above-mentioned light guide plate.
The utility model also provides a kind of refrigerator, with surface illuminating device as described above.
According to the utility model, due to, in the above-mentioned multiple protrusion prisms of back shape, light source being made to produce in forming light guide plate In the inclined surface of multiple protrusion prisms total reflection or diffusing reflection occur for raw light, to keep light equal from the light-emitting surface of light guide plate It projects evenly, therefore, it is possible to while obtaining uniform planar light, eliminate the components such as diffuser plate and reflective membrane, reduce The quantity of installing component so that simple in structure, simple to install, and do not need laser engraving reflective spot so that production cost It substantially reduces.
Description of the drawings
Fig. 1 is the floor map for the surface illuminating device for indicating the embodiments of the present invention 1.
Fig. 2 is the line A-A sectional view for the surface illuminating device for indicating the embodiments of the present invention 1.
Fig. 3 is the figure for travelling route of the light in the surface illuminating device of embodiment 1 for indicating that light source generates.
Fig. 4 is the sectional view for the surface illuminating device for indicating the embodiments of the present invention 2.
Fig. 5 is the sectional view for the surface illuminating device for indicating the prior art.
Specific implementation mode
The utility model is described in detail with reference to the accompanying drawings and examples.In addition, in the description of the drawings, Same symbol is accompanied by same or considerable part, the repetitive description thereof will be omitted.
(embodiment 1)
The present embodiment 1 provides a kind of surface illuminating device 100, and such as refrigerating chamber, temperature-changing chamber and freezing in refrigerator is arranged In the compartments such as room or in refrigerator doors, used as the lighting device of refrigerator.Surface illuminating device 100 can be arranged in refrigerator In such as top or side wall of compartment, it can also be set on the rack of refrigerator.
Fig. 1 is the floor map for the surface illuminating device 100 for indicating the embodiments of the present invention 1, and Fig. 2 is to indicate Fig. 1 In surface illuminating device 100 line A-A sectional view.
As shown in Figure 1, surface illuminating device 100 includes light guide plate 110 and the light source in a side end face of light guide plate 110 is arranged 120.Light guide plate 110 has the light-emitting surface 112 that the reflective surface 111 for carrying out light reflection and injection light will be penetrated from light source 120, reflective surface 111 are mutually parallel with light-emitting surface 112.The light projected from light source 120 is totally reflected due to reflective surface 111 in light guide plate 110 And after diffusing reflection, projected as planar light downwards via light-emitting surface 112.In addition, in the present embodiment 1, although light guide plate 110 reflective surface 111 is set as upper surface, and light-emitting surface 112 is set as lower surface, but the utility model is without being limited thereto, such as can also Reflective surface 111 is set as to the lower surface of light guide plate 110, light-emitting surface 112 is set as upper surface, at this point, occurring in light guide plate 110 complete Reflection or irreflexive light project upwards from light-emitting surface 112.
Light source 120 be with the LED light strip being made of multiple LED lamp beads, the LED light strip along light guide plate 110 side End face extends, and is tightly attached on a side end face for light guide plate 110.The color for the light that light source 120 is sent out does not limit, Ke Yigen It is set according to needing, such as can be white light, warm colour light etc..In addition, surface illuminating device 100 acts not only as lighting device It uses, can also be used as sterilizing unit to use, in the case where carrying out use as sterilizing unit, such as light source 12 can be made Send out blue light and ultraviolet light.In addition, in the present embodiment 1, light source 120 is not limited to LED light, such as can also incandescent lamp or fluorescence Lamp etc..The quantity of light bulb can also be one or more.
The frame 20 for being used to support surface illuminating device 100 is provided with around surface illuminating device 100.The material of frame 20 It is not particularly limited, as long as the intensity with support surface illuminating device 100, may be used any materials.In the inside casing of frame 20 Upper be provided with inwardly projectingly buckles 22 for the first buckle 21 of lightguide plate fixing 101 and second for fixed light source 102. In Fig. 1, which is respectively set 2 below upper, and the second buckle 22 is provided with 2, but they at light source 120 Number do not limit, as long as light guide plate 101 and light source 102 can be stably kept, then could be provided as any number.On side It is provided with frame fixation buckle 23 on the outline border of frame 20 with protruding outward, is fixed with buckling 23, can will be installed by the frame The frame 20 of surface illuminating device 100 is fixed on the corresponding position in the compartment of refrigerator or in refrigerator doors.Frame fixation blocks The quantity of button 23 is also not necessarily limited to each setting 2 around, can be arranged as required to any amount.In addition, surface illuminating device 100 It can not be fixed on refrigerator by frame 20, and be directly embedded into the predetermined bits such as the wall portion for being formed in refrigerator, top or refrigerator doors It sets.
As depicted in figs. 1 and 2, the reflective surface 111 of light guide plate 110 is provided with multiple protrusion prisms 113 projected upwards, The protrusion prism 113 is in a strip shapely along the extension on one side of light guide plate 110, and multiple prominent prisms 113 abut in parallel to each other Configuration.Multiple prominent prism 113 is integrally formed by using mold with light guide plate 110.In addition, light guide plate 110 and multiple prominent The material for playing prism 113 is not particularly limited, and common optical material can be used, for example, can be by PC materials (makrolon material Material) or the material with good light conductivity such as acrylic (polymethyl methacrylate) be made.
Each prominent prism 113 obtained from the face cutting vertical with the extending direction of its extending direction or light source 120 Cross sectional shape is triangle, wherein the triangle on one side be to light source incline bevel edge, that is to say, that each prominent prism 113 With the inclined surface 113a towards light source incline.The inclined surface 113a and 112 angulation a of light-emitting surface of each prominent prism 113 It is 20 °~25 °.
Fig. 3 is the figure for travelling route of the light in the surface illuminating device of embodiment 1 for indicating that light source generates.As described in Figure 3, It, can by being arranged to the inclined surface 113a for protruding prism 113 to meet 20 °≤a≤25 ° with 112 angulation a of light-emitting surface So that be totally reflected from the light of the reflective surface 111 of 120 directive light guide plate 110 of light source in the inclined surface 113a of prominent prism 113, To equably being projected from the light-emitting surface 112 of light guide plate 110 as planar light, at the same realize number of components it is few, it is simple in structure and Manufacturing cost is low.
In addition, in order to realize better and uniform planar light, the width b of raised prism, i.e., prominent rib can also be made The width b on the bottom edge of the cross sectional shape of mirror 113 meets 1.5mm≤b≤2.0mm, and the height c of raised prism is enabled to meet 0.4mm≤c ≤0.6mm。
In addition, the above-mentioned cross sectional shape of each prominent prism 113 may be other multilateral shapes except triangle, only Each prominent prism 113 is wanted to have to the side of light source incline.In addition, multiple prominent prisms 113 can also be divided into multiple portions, Protrusion prism 113 in multiple portions extends in different directions, as long as each prominent prism 113 has the inclination towards light source incline Face 113a.
Reflective surface 111 also has buffer area 114, and as shown in Figure 1 and Figure 2, buffer area 114 is arranged in reflective surface 111 The edge by 120 side of light source in addition to the region set by multiple prominent prisms 113, it is, being arranged in reflective surface 111 In multiple prominent prisms 113 set by region and light source 120 between, in the buffer area 114 without forming raised prism 113, it is even surface.The width of the buffer area, the i.e. direction vertical with the extending direction of prominent prism 113 of the buffer area On width L be preferably 3mm or more.By being provided as the buffer area of even surface in reflective surface 111, light guide plate can be prevented There are the brightness disproportionations such as bright group, shadow in 110 light-emitting surface 112.
In addition, light guide plate 110 also has towards the inclined end in 120 side of light source with the end of 120 opposite side of light source Face inclined surface 115, at least part face light source 120 in end slope face 115, the end slope face 115 and 112 institute of light-emitting surface At angle d meet 30 °≤d≤45 ° so that the light come from 120 direct projection of light source occur total reflection in the end slope face 114 and It is projected back to light guide plate 110, then from light-emitting surface 112.Thereby, it is possible to reduce the loss of light, and realize more good and uniform Planar light.
(embodiment 2)
The embodiments of the present invention 2 are related to a kind of surface illuminating device 200.In the surface illuminating device 100 of embodiment 1, Multiple prominent prisms 113 are integrally formed by using mold with light guide plate 110, and in the surface illuminating device of embodiment 2 200, Multiple prominent prisms 230 are mutually independent component with light guide plate 210.The other structures of surface illuminating device 200 and embodiment 1 Surface illuminating device 100 is identical, and description will be omitted, and uses same reference numerals.
Fig. 4 is the sectional view for the surface illuminating device 200 for indicating the embodiments of the present invention 2.As shown in figure 4, multiple prominent Go out prism 230 and be formed as a tunic shape, is closely bonded in the upper surface of light guide plate 210 by bonding agent etc..
, can be as needed in the surface illuminating device 200 of embodiment 2, the protrusion prism 230 on light guide plate 210 is set Size and shape etc..In addition it is also possible to as needed, prominent prism 230 be passed through different materials from light guide plate 210 Expect to make.Thereby, it is possible to improve the design freedom of prominent prism 230, to improve the versatility of surface illuminating device 200.
The surface illuminating device 100,200 of above-described embodiment 1,2 is not limited only to use in refrigerator, can also be needed at other In the electrical equipment illuminated with planar light.For example, the surface illuminating device of above-described embodiment 1,2 can also be arranged in disinfection cabinet In, the uniform planar light of blue light and ultraviolet light etc. is sent out, improves bactericidal effect.
Embodiment described above is only preferred embodiments of the present invention.The structure of wherein each component, connection side All it's not limited to that for formula etc., and the equivalents carried out without departing from the principle of this utility model and improvement should all regard To belong to the scope of protection of the utility model.

Claims (10)

1. a kind of surface illuminating device, it is characterised in that:
With light guide plate and the light source in a side end face of the light guide plate is set,
The light guide plate has the reflective surface of reflected light and projects the light-emitting surface of light,
The multiple raised prisms for the setting that adjoins each other are formed in the reflective surface of the light guide plate, from the light source directive institute The light of reflective surface is stated after the multiple raised prism reflects, is projected from the light-emitting surface,
The protrusion prism has towards the inclined inclined surface in light source side, in season the inclined surface and light-emitting surface institute at Angle be a when, meet 20 °≤a≤25 °.
2. surface illuminating device as described in claim 1, it is characterised in that:
The protrusion prism is formed as the strip extended along a side end face for the light guide plate,
When the width in the section vertical with the extending direction of the raised prism described in season is b, meet 1.5mm≤b≤ 2.0mm。
3. surface illuminating device as described in claim 1, it is characterised in that:
When the height of the raised prism described in season is c, meet 0.4mm≤c≤0.6mm.
4. surface illuminating device as described in claim 1, it is characterised in that:
It is formed with buffer area in the edge by the light source side of the reflective surface, the reflective surface is in the buffer area Smooth face.
5. surface illuminating device as claimed in claim 4, it is characterised in that:
The width L of the buffer area is 3mm or more.
6. surface illuminating device as described in claim 1, it is characterised in that:
The light guide plate has with the end face of the light source opposite side towards the inclined end slope face in the light source side, Light source described at least part face in the end slope face, the light come from the light source direct projection occur in the end slope face It is projected from the light-emitting surface after reflection.
7. surface illuminating device as claimed in claim 6, it is characterised in that:
When the end slope face and the light-emitting surface angulation are d in season, meet 30 °≤d≤45 °.
8. such as surface illuminating device according to any one of claims 1 to 7, it is characterised in that:
The light guide plate is integrally formed with the multiple prism.
9. such as surface illuminating device according to any one of claims 1 to 7, it is characterised in that:
The light source is LED light bar, is extended along a side end face of the light guide plate.
10. a kind of refrigerator, it is characterised in that:
With surface illuminating device according to any one of claims 1 to 9.
CN201721905627.7U 2017-12-29 2017-12-29 Surface illuminating device and refrigerator with the surface illuminating device Active CN207991083U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721905627.7U CN207991083U (en) 2017-12-29 2017-12-29 Surface illuminating device and refrigerator with the surface illuminating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721905627.7U CN207991083U (en) 2017-12-29 2017-12-29 Surface illuminating device and refrigerator with the surface illuminating device

Publications (1)

Publication Number Publication Date
CN207991083U true CN207991083U (en) 2018-10-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721905627.7U Active CN207991083U (en) 2017-12-29 2017-12-29 Surface illuminating device and refrigerator with the surface illuminating device

Country Status (1)

Country Link
CN (1) CN207991083U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114909866A (en) * 2021-02-10 2022-08-16 Lg电子株式会社 Lighting assembly, dispenser device and refrigerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114909866A (en) * 2021-02-10 2022-08-16 Lg电子株式会社 Lighting assembly, dispenser device and refrigerator
CN114909866B (en) * 2021-02-10 2023-12-26 Lg电子株式会社 Lighting assembly, dispenser device and refrigerator

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