CN203771228U - LED (light-emitting diode) lighting device - Google Patents
LED (light-emitting diode) lighting device Download PDFInfo
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- CN203771228U CN203771228U CN201320889713.9U CN201320889713U CN203771228U CN 203771228 U CN203771228 U CN 203771228U CN 201320889713 U CN201320889713 U CN 201320889713U CN 203771228 U CN203771228 U CN 203771228U
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Abstract
The utility model provides an LED (light-emitting diode) lighting device. The LED lighting device comprises at least one LED light source and a light guide plate, wherein the light guide plate is provided with at least one groove; the groove is positioned at the emergent hole 21 of the LED light source. The LED lighting device is also provided with at least one reflecting surface; the emergent hole 21 of the at least one LED light source, the reflecting surface, the inner wall of the groove and the surface of the light guide plate are arranged in the same light path, so that the luminous efficiency of the LED lighting device is maximized. By adopting the structure of the LED lighting device, a frameless, special-shaped, large-size and ultrathin structural design can be realized.
Description
Technical field
The utility model relates to a kind of light fixture, particularly a kind of LED lighting device.
Background technology
Along with popularizing of LED illuminating product, the illumination of simple basis can not meet people's demand.Luminous evenly, moulding is unique, the strong ultra-thin LED light fixture of design sense is more and more subject to market favor.For realizing ultra-thin LED Design of Luminaires, prior art adopts the luminous mode of side conventionally, LED side is attached on the sidewall of lamp interior.But the size that one of defect of this structure is light fixture is restricted, this is because be limited to the propagation distance of LED light energy, in the position away from sidewall, (center of for example light fixture) illumination reduces, and user can observe dark space, therefore the size of light fixture cannot be done greatly.Two of the defect of this technology is, LED needs evenly and symmetrically be arranged in light fixture sidewall, and this structure that has just limited light fixture is also necessary for symmetrical structure, otherwise cannot realize uniformly light-emitting, and therefore this technology cannot be applied to the Design of Luminaires of polymorphic structure.
So, one need to be designed and uniformly light-emitting can be realized, can make again light fixture size, the unrestricted LED light fixture of shape, to adapt to market and user's demand.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is to provide a kind of ultra-thin LED light fixture of realizing uniformly light-emitting.
To achieve these goals, the utility model provides a kind of LED lighting device, comprising: at least one LED light source, LGP; Described LGP has at least one groove, and the light-emitting window of described LED light source is located in the position of described groove; Wherein, described LED lighting device also has at least one reflecting surface; The surface of the light-emitting window of described at least one LED light source, described reflecting surface, described groove inwall and described LGP is arranged in same light path.
LED lighting device described in the utility model, wherein, described reflecting surface is to select from a suite face, and this suite face comprises, and (a) fully reflecting surface (b) has the curved surface of high reflection film.
LED lighting device described in the utility model, wherein, in described groove, be also placed with lens, described at least one reflecting surface is located at the top of described lens, be the first reflecting surface, the surface of described LED light source light-emitting window, described the first reflecting surface, described groove inwall and described LGP is set in turn in same light path.
LED lighting device described in the utility model, wherein, described LGP top is provided with described at least one reflecting surface, and the surface of described LED light source light-emitting window, described groove inwall, described reflecting surface and described LGP is set in turn in same light path.
LED lighting device described in the utility model, wherein, described reflecting surface is fully reflecting surface.
LED lighting device described in the utility model, wherein, the surface of described reflecting surface is matte surface or has plated film.
LED lighting device described in the utility model, wherein, described LGP has relative end face and bottom surface, is evenly distributed with multiple sites on the end face of described LGP and/or bottom surface.
LED lighting device described in the utility model, wherein, described in each, site is all positioned at the light that penetrates from described LED light source light path after reflection.
LED lighting device described in the utility model, wherein, the site of described LGP is frosted site.
LED lighting device described in the utility model, wherein, described LED lighting device also comprises circuit board, and described circuit board is combined with described LGP, and described LED light source is arranged on described circuit board.
LED lighting device described in the utility model, wherein, the one side that described circuit board is close to described LGP is coated with reflectance coating.
LED lighting device described in the utility model, wherein, described LED light source, described reflecting surface and the supporting setting of described groove.
LED lighting device described in the utility model, wherein, the planform of described groove is selected from one group of shape, and this group shape comprises the circular hole of (a) zero draft, (b) has the circular hole of tapering, (c) stair-stepping perforate.
LED lighting device described in the utility model, wherein, the inner surface of described groove is polished surface.
LED lighting device described in the utility model, wherein, described LED lighting device also comprises a diffuser plate, and described diffuser plate is located at described LGP end face, and described diffuser plate and described LGP are separate type.
LED lighting device described in the utility model, wherein, described diffuser plate is smooth or the flat board of frosted.
LED lighting device described in the utility model, wherein, described diffuser plate is the microprism plate with micro-structural
Adopt after technique scheme, the defect that in prior art, LED lighting device cannot be made large scale or polymorphic structure in uniformly light-emitting can be overcome; Adopting after the structure of LED lighting device described in the utility model, can realize Rimless, abnormity, large scale, ultra-thin structural design.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model LED lighting device;
Fig. 2 a is the cross sectional representation of a kind of lens of using in the utility model LED lighting device;
Fig. 2 b is the cross sectional representation of a kind of lens of using in the utility model LED lighting device;
Fig. 3 a-Fig. 3 c is the groove shapes cross sectional representation on LGP in the utility model LED lighting device;
Fig. 4 is light path schematic diagram and the LGP frosted network point distribution schematic diagram in the utility model LED lighting device;
Fig. 5 is the schematic diagram of establishing fully reflecting surface in the utility model LED lighting device on LGP;
Fig. 6 is the simplified diagram of the utility model LED lighting device polymorphic structure design, and wherein LGP and diffuser plate are not shown.
Detailed description of the invention
Describe below with reference to the accompanying drawings and in conjunction with specific embodiments the utility model in detail.
As shown in Figure 1, Figure 4 and Figure 5, a kind of LED lighting device that the utility model provides, it comprises some LED light sources 2, LGP 4 and circuit board 1.LED light source 2 is evenly arranged on circuit board 1 and by circuit board 1 and powers.LGP 4 is arranged at the upper surface of circuit board 1 and LED light source 2 is accommodated wherein.In LGP 4, have some grooves 8, each groove 8 correspondence is accommodated a LED light source 2 in the inner, and groove 8 is arranged at the light-emitting window 21 of LED light source 2, for receiving and being coupled from the light of LED light source 2 outgoing, makes it to inject in LGP 4.In LED lighting device of the present utility model, also have at least one reflecting surface, the inwall of groove 8 and the surface of LGP 4 of the light-emitting window 21 of LED light source 2, reflecting surface, LGP 4 are arranged in same light path.Preferably, the reflecting surface in LED lighting device of the present utility model, can be fully reflecting surface, can be also the surface with high reflection film, to ensure high efficiency light splitting.LED lighting device of the present utility model, can change the light that LED light source 2 penetrates, synthetic the optocoupler of the spot light of launching separately one by one evenly soft luminous area source.
In of the present utility model a kind of embodiment as shown in Figure 4, a kind of LED lighting device that the utility model provides, also comprises lens 3, is placed in the groove 8 of LGP 4 and is mounted on the upper surface of circuit board 1.These lens 3 are side light emission lens, and its top is provided with at least one reflecting surface, are the first reflecting surface, for reflecting from the light of LED light source 2 outgoing to LGP 4.In the utility model embodiment, this reflecting surface is back taper, but in other preferred embodiments, can be also other shapes.This reflecting surface can be also the reflecting surface of high reflectance, but not fully reflecting surface.The internal structure of above-mentioned LED lighting device is arranged as: the inwall of groove 8 and the surface of LGP 4 of the light-emitting window 21 of LED light source 2, the reflecting surface of lens 3, LGP 4 are set in turn in same light path.
The light that should upwards penetrate from the light-emitting window 21 of LED light source 2, after the reflecting surface reflection via lens 3, changes into the light of both sides transmission.Light is now divided into two parts, and the light that is less than 60 ° is reflected by lens 3, and the light that is greater than 60 ° is reflected and then enters in LGP 4 through lens 3 again by after the reflecting surface of lens 3 reflection.In the time that refracted ray or reflection ray project the inwall of groove 8 of LGP 4, there is light coupling, inject even looseization of carrying out light in LGP 4.The end face of LGP 4 provides total reflection, and bottom surface arranges some sites 6 faling apart light, makes light even.Wherein, in the near place of distance L ED light source 2, site 6 distributes and does not have distance L ED light source 2 place far away intensive.While having multiple LED light sources 2 to be uniformly distributed, the emergent light of LED light source 2 is in the evenly rear stack mutually of interior looseization of LGP 4, outgoing more equably.The above is the light path situation of LED lighting device described in the utility model with the embodiment of lens 3.
As shown in Figure 1, the utility model provides a kind of LED lighting device, has also comprised diffuser plate 5.LED light source 2 is arranged on circuit board 1 in groups with lens 3, and evenly arranges, and the bottom surface of LGP 4 is fixedly connected with and fits tightly with circuit board 1, as the bottom surface of light fixture described in the utility model.The groove 8 of LGP 4 enters the combining structure cover of lens 3 and LED light source 2 wherein.Preferably, LED light source 2, lens 3 and groove 8 be corresponding complete setting one by one, makes all light from LED light source 2 outgoing can pass through light splitting and the coupling of lens 3 and groove 8, makes spot light produce the effect of area source.Having the position of certain distance to be also provided with diffuser plate 5 with LGP 4, as the end face of light fixture.Wherein, the preferred a kind of side light emission lens of lens 3, can wide-angle ground change the light path of the light that light source sends.
LED light source 2 of the present utility model is arranged on circuit board 1, and evenly arrange, the benefit of this combination is, the underrun that can make light fixture is integrated in light source method on circuit board 1 and dwindles the volume of light emitting source, makes the planform of whole light fixture unrestricted.
The structure of the lens 3 that the utility model as shown in Figure 2 a and 2 b adopts:
Lens shown in Fig. 2 a, there is in its bottom the plane of incidence 321 that receives LED light source 2 emitted light, top has at least one reflecting surface 311 that reflects the incident light line, sidewall has the exiting surface 331 of Transflective light and refraction incident ray, and makes it be fixed on the locating dowel 34 on circuit board 1.When the emitted light of LED light source 2 is incident to after the plane of incidence 321 of lens 3, a part of ray cast, to reflecting surface 311, penetrates lens through reflection from exiting surface 331, as shown in light path 71; Part light is directly projected to exiting surface 331, penetrates lens, through superrefraction as shown in light path 72.
Lens shown in Fig. 2 b, there is in its bottom the plane of incidence 322 that receives LED light source 2 emitted light, the sidewall sections being connected at its top and with bottom has respectively the reflecting surface 3121 and the reflecting surface 3122 that reflect the incident light line, and sidewall has Transflective light and refraction incident ray exiting surface 332.When the emitted light of LED light source 2 is incident to after the plane of incidence 322 of lens 3, a part of light carries out primary event through top reflecting surface 3121, penetrates lens from exiting surface 332, as shown in light path 73; Part light successively after 3121 reflections of sidewall reflects face 3122 and top reflecting surface, then penetrates lens from exiting surface 332, as shown in light path 74.
Preferably, the optical lens of two of above lens 3 polymethyl methacrylates that embodiment adopts (PMMA) or Merlon (PC) material.Wherein, the optical lens of polymethyl methacrylate (PMMA) material, its visible light transmissivity is higher, reaches 92%, higher than the light transmittance of glass; And the optical lens of Merlon (PC) material, its light transmittance is high, refractive index is high, impact resilience is high, dimensionally stable and easily machine-shaping, the high efficiency bright dipping in the utility model requirement that is no matter or in the larger quantity required of the utility model, be all very useful.
In of the present utility model another kind of embodiment as shown in Figure 5, a kind of LED lighting device that the utility model provides, the top of LGP 4 is provided with at least one reflecting surface 32, layout also can change the light that LED light source 2 penetrates like this, synthetic the optocoupler of the spot light of launching separately one by one evenly soft luminous area source.The groove 8 of LGP 4 matches in setting and LGP 4 one by one with the reflecting surface 32 of LGP 4.The internal structure of above-mentioned LED lighting device is arranged as: the surface of inwall, reflecting surface 32 and the LGP 4 of the light-emitting window 21 of LED light source 2, the groove 8 of LGP 4 is set in turn in same light path.
The light that should upwards penetrate from the light-emitting window 21 of LED light source 2, after the inwall coupling of the first groove 8 via LGP 4, is refracted in LGP 4.Light is now divided into two parts, and the light that is less than 60 degree directly projects the end face of LGP 4 from groove 8, and the light that is greater than 60 degree projects end face or the bottom surface of LGP 4 after reflecting surface 32 reflections of LGP 4.The end face of LGP 4 provides total reflection, and bottom surface is provided with some sites 6 faling apart light, and the light on the site 6 that is arranged to project LGP 4 bottom surfaces of site 6 all can obtain diffuse reflection, makes evenly looseization of light.The emergent light of multiple LED light sources 2 is in the evenly rear stack mutually of interior looseization of LGP 4.The above is the light path situation of a kind of embodiment that reflecting surface 32 is set on LGP 4 in LED lighting device described in the utility model.Preferably, reflecting surface 32 is made into fully reflecting surface, improves luminous efficiency.
In embodiment of the present utility model as shown in Figure 5, the arrangement of circuit board 1, LED light source 2 and diffuser plate 5 adopts arrangement (not shown in Figure 5) as shown in Figure 1.The groove 8 of LGP 4 covers LED light source 2 in wherein.Preferably, the reflecting surface 32 in LED light source 2, LGP 4 and groove 8 be corresponding complete setting one by one, makes all light from LED light source 2 outgoing can pass through light splitting and the coupling of reflecting surface 32 and groove 8, makes spot light produce the effect of area source.
In embodiment as shown in Figure 1, Figure 4 and Figure 5, preferably, above-described reflecting curved surface 311,3121 and 32 is conical camber, makes to project LGP 4 Anywhere from the light of LED light source 2 outgoing luminous energy after reflection, makes light fixture bright dipping of the present utility model more even, soft.
More preferably, the distance of the summit of conical camber 311,3121 and 32 and the light-emitting window 21 of LED light source 2 is less than the distance of the light-emitting window 21 of its bottom surface and LED light source 2, ensures that all light penetrating from LED light source 2 can reflex to LGP 4.If the distance of the light-emitting window 21 of summit and LED light source 2 is more than or equal to the distance of the light-emitting window 21 of bottom surface and LED light source 2, can make to spill the gap of a part of reflection ray between LED light source 2 and circuit board 1, cause the loss of light energy.
More preferably, the bottom surface of conical camber 311,3121 and 32 is parallel with the surface of LGP 4, make reflection ray can enter expeditiously LGP 4, if there is certain angle on the surface of this bottom surface and LGP 4, can cause light splitting inhomogeneous, cause lamp luminescence of the present utility model inhomogeneous.
More preferably, the above conical camber 311,3121 and 32 is conical curved surface, makes can project more exactly on the diffuse reflection site 6 in LGP 4 (as shown in Figure 4 and Figure 5) through the light of its reflection.
In order to make the directly upwards luminous energy of the outgoing minimizing of reflecting surface 311,3121 and 32 from lens 3 tops shown in Fig. 2 a, Fig. 2 b and Fig. 5 and LGP 4 end faces, prevent light leakage phenomena, increase the efficiency of reflecting surface, can plated film or do frosted processing to the reflecting curved surface shown in Fig. 2 a, Fig. 2 b and Fig. 5.
The structural representation of the LGP 4 shown in Fig. 4 and Fig. 5 and the index path of several embodiment that the utility model is selected.End face and/or bottom surface at LGP 4 adopt the equally distributed multiple sites 6 of laser dotting technical arrangement, the light of injecting LGP 4 can be broken up, and form diffuse reflection, then from the outgoing of LGP upper surface, then through the effect of diffuser plate 5, light is uniformly distributed.
Preferably, for the site 6 of irreflexive LGP 4, be evenly arranged in the bottom surface (being close to the one side of circuit board) of LGP 4, site arrangement mode and density can require to change according to different Luminescence Uniformities.In other preferred embodiments, site 6 also can be arranged on the end face of LGP 4.
Preferably, the site 6 of each LGP 4 is all distributed in the light path of each light that enters LGP 4.
Preferably, the site 6 of each LGP 4 is frosted sites, and the light that makes to project on site 6 is able to evenly looseization, ensures lighting device uniformly light-emitting.
Shown in Fig. 3 a-3c is the structure of the groove 8 in the LGP 4 described in above-described embodiment.Because the planform of lens 3 is varied, groove 8 just need to according to the different structure of lens 3 can be designed to zero draft as shown in the figure circular hole (Fig. 3 a), have certain taper circular hole (Fig. 3 b) or stair-stepping perforate (Fig. 3 c), makes to enter more efficiently LGP 4 from the light of lens 3 outgoing.
Preferably, do polishing at the inner surface of the groove 8 of this LGP 4, to improve light coupling efficiency.
Circuit board 1 shown in Fig. 1 and Fig. 4, the surface of being close to LGP 4 at it can plate reflectance coating, wherein this reflectance coating has high reflectance, light reflection from from LGP 4 to its ejaculation can be got back to LGP 4 final ejaculation, increase the light extraction efficiency of light fixture, strengthen lamp brightness, reduced energy loss.
In above-described embodiment, the material of making LGP 4 of the present utility model is transpex (PMMA) or Merlon (PC) material, wherein, the LGP of polymethyl methacrylate (PMMA) material, its transmitance is higher, and there is no impurity, make the efficiency of light transmission higher; And the LGP of Merlon (PC) material, its light transmittance is high, refractive index is high, impact resilience is high, dimensionally stable and easily machine-shaping, especially mechanical strength and the electrical insulating property in its good wide operating temperature range, make it when with circuit board steady job, can not be subject to circuit board to affect its optical property because of the impact of the heat of luminous generation.
Diffuser plate 5 shown in Fig. 1, can use the smooth or frosted of polymethyl methacrylate (PMMA) or Merlon (PC) material dull and stereotyped, also can be the microprism plate with micro-structural, make light through after being once uniformly distributed of LGP 4, evenly distribute again, make the emergent light of light fixture more even, soft, efficient.
From above description, can find out, the utility model the above embodiments have realized following technique effect: by adopting several reflectings surface and LED light source to be combined to form the mode of optics, light emitted straight-down negative LED light source is changed to light path after the reflection of reflecting surface, through total reflection and the diffuse reflection processing of LGP, realize the conversion of spot light to area source, make the light of light fixture more even, soft, high efficiency.Adopt LED lighting device of the present utility model, overcome LED light fixture and cannot in uniformly light-emitting, make the defect of large scale or polymorphic structure.As shown in Figure 6, adopting after the structure of LED lighting device described in the utility model, can realize Rimless, abnormity, large scale, ultra-thin structural design.
Should be noted that, embodiment of the present utility model has preferably implementation, and not the utility model is done to any type of restriction, any person skilled in art of being familiar with may utilize the technology contents of above-mentioned announcement to change or be modified to the effective embodiment being equal to, in every case do not depart from the content of technical solutions of the utility model, any amendment or equivalent variations and the modification above embodiment done according to technical spirit of the present utility model, all still belong in the scope of technical solutions of the utility model.
Claims (17)
1. a LED lighting device, comprising:
At least one LED light source, LGP;
Described LGP has at least one groove, and the light-emitting window of described LED light source is located in the position of described groove;
It is characterized in that:
Described LED lighting device also has at least one reflecting surface;
The surface of the light-emitting window of described at least one LED light source, described reflecting surface, described groove inwall and described LGP is arranged in same light path.
2. LED lighting device as claimed in claim 1, is characterized in that: described reflecting surface is to select from a suite face, and this suite face comprises, (a) fully reflecting surface (b) has the curved surface of high reflection film.
3. LED lighting device as claimed in claim 2, it is characterized in that: in described groove, be also placed with lens, described at least one reflecting surface is located at the top of described lens, be the first reflecting surface, the surface of described LED light source light-emitting window, described the first reflecting surface, described groove inwall and described LGP is set in turn in same light path.
4. LED lighting device as claimed in claim 2, it is characterized in that: described LGP top is provided with described at least one reflecting surface, and the surface of described LED light source light-emitting window, described groove inwall, described reflecting surface and described LGP is set in turn in same light path.
5. LED lighting device as claimed in claim 4, is characterized in that: described reflecting surface is fully reflecting surface.
6. LED lighting device as claimed in claim 2, is characterized in that: the surface of described reflecting surface is matte surface or has plated film.
7. LED lighting device as claimed in claim 1, is characterized in that: described LGP has relative end face and bottom surface, is evenly distributed with multiple sites on the end face of described LGP and/or bottom surface.
8. LED lighting device as claimed in claim 7, is characterized in that: described in each, site is all positioned at the light that penetrates from described LED light source light path after reflection.
9. LED lighting device as claimed in claim 7, is characterized in that: the site of described LGP is frosted site.
10. LED lighting device as claimed in claim 1, is characterized in that: described LED lighting device also comprises circuit board, and described circuit board is combined with described LGP, and described LED light source is arranged on described circuit board.
11. LED lighting devices as claimed in claim 10, is characterized in that: the one side that described circuit board is close to described LGP is coated with reflectance coating.
12. LED lighting devices as claimed in claim 1, is characterized in that: described LED light source, described reflecting surface and the supporting setting of described groove.
13. LED lighting devices as claimed in claim 1, it is characterized in that: the planform of described groove is selected from one group of shape, this group shape comprises the circular hole of (a) zero draft, (b) has the circular hole of tapering, (c) stair-stepping perforate.
14. LED lighting devices as claimed in claim 1, is characterized in that: the inner surface of described groove is polished surface.
15. LED lighting devices as claimed in claim 1, is characterized in that: described LED lighting device also comprises a diffuser plate, and described diffuser plate is located at described LGP end face, and described diffuser plate and described LGP are separate type.
16. LED lighting devices as claimed in claim 15, is characterized in that: described diffuser plate is smooth or the flat board of frosted.
17. LED lighting devices as claimed in claim 15, is characterized in that: described diffuser plate is the microprism plate with micro-structural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889713.9U CN203771228U (en) | 2013-12-31 | 2013-12-31 | LED (light-emitting diode) lighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320889713.9U CN203771228U (en) | 2013-12-31 | 2013-12-31 | LED (light-emitting diode) lighting device |
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| Publication Number | Publication Date |
|---|---|
| CN203771228U true CN203771228U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320889713.9U Expired - Fee Related CN203771228U (en) | 2013-12-31 | 2013-12-31 | LED (light-emitting diode) lighting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748021A (en) * | 2013-12-31 | 2015-07-01 | 欧普照明股份有限公司 | LED lighting device |
| CN104977650A (en) * | 2015-06-30 | 2015-10-14 | 欧普照明股份有限公司 | Optical switching device and straight-down type LED lamp with same |
| CN106224825A (en) * | 2015-08-28 | 2016-12-14 | 中山市风华稀柠照明设计有限公司 | A kind of LED desk lamp |
-
2013
- 2013-12-31 CN CN201320889713.9U patent/CN203771228U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104748021A (en) * | 2013-12-31 | 2015-07-01 | 欧普照明股份有限公司 | LED lighting device |
| CN104977650A (en) * | 2015-06-30 | 2015-10-14 | 欧普照明股份有限公司 | Optical switching device and straight-down type LED lamp with same |
| CN106224825A (en) * | 2015-08-28 | 2016-12-14 | 中山市风华稀柠照明设计有限公司 | A kind of LED desk lamp |
| CN106247209A (en) * | 2015-08-28 | 2016-12-21 | 中山市风华稀柠照明设计有限公司 | A kind of desk lamp easy to adjust |
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