CN103925488A - Light guide lamp and manufacturing method thereof - Google Patents
Light guide lamp and manufacturing method thereof Download PDFInfo
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- CN103925488A CN103925488A CN201310026891.3A CN201310026891A CN103925488A CN 103925488 A CN103925488 A CN 103925488A CN 201310026891 A CN201310026891 A CN 201310026891A CN 103925488 A CN103925488 A CN 103925488A
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- light
- light conductor
- side direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The invention relates to a light guide lamp and a manufacturing method thereof, and belongs to the technical field of lighting. The light guide lamp structurally comprises a light guide body, two or more than two lateral embedded light sources and a light reflection layer, the light guide body is of a strip or curve light guide structure made of light guide materials, the strip light guide structure is bent to form the curve light guide structure, the lateral embedded light sources are luminous sources loaded from the side of the light guide body to the inside of the light guide body, the loaded light sources meet the condition of total reflection in the light guide body, and the light reflection layer is arranged on the side of the light guide body to perform diffuse reflection for light emitted by the lateral embedded light sources in the light guide body, so that the light is emitted from the light guide body. By the aid of the light guide lamp, the lateral embedded light sources can be used for loading the light sources from the side of the light guide body, diffusion functions of the light are realized by the aid of the total reflection function of the light guide body and the diffuse reflection function of the light reflection layer, and the light guide lamp has all advantages of LED (light-emitting diode) light sources and uniform illumination effects of traditional fluorescent lamp tubes.
Description
Technical field
The invention belongs to lighting technical field.
Technical background
Novel light emitting source continues to bring out at present, such as LED lamp, and OLED (Organic Light Emitting Diode, Organic Light-Emitting Diode); Cathode fluorescent tube (Cold Cathode Fluorescent Lamp), is called for short CCFL; EL (electroluminescence), EL sheet, etc.
As an example, in the situation that using the electroluminescent lamp such as LED, because LED lamp source is small-sized, when the space of dispersing at needs is larger, small-sized LED lamp is usually difficult to meet user's demand.People, in order to spread the light of LED lamp, often use the devices such as reflection shield to carry out reflective operation.
In addition, the current application technology form that has also developed a kind of electroluminescent lamp, it includes lamp guide and is arranged on the LED lamp at lamp guide two ends.A side at lamp guide is provided with reflector layer.In use, inject light by the LED lamp at two ends to aforesaid lamp guide, in lamp guide, touch in the situation of aforementioned reflector layer, the light in lamp guide is outwards derived with irreflexive form.Profit in this way, can obtain more well-balanced divergence of beam effect.But this technology type has number of drawbacks equally, typical defect is exemplified below:
(1), in order to increase the brightness of whole electroluminescent lamp, just the power of the LED lamp that is arranged on aforementioned lamp guide two ends need to be improved, but in the situation that LED lamp power improves, the heat coming out will significantly promote, and causes light source that serious light decay occurs.How these heats are spread out well, be still at present technical barrier aspect LED lamp.
(2) high-power LED lamp cost is very high, as a comparison, in the price of lower powered LED lamp very low, heat dissipation capacity is little, but under current technical conditions, cannot be by the composition structure of existing lamp guide and LED lamp, in utilization, lower powered LED lamp obtains high-power luminous intensity.
(3), in the situation that lamp guide length is grown, although lamp guide two ends are respectively arranged with LED lamp, along with length increases, still can cause the well-balanced property of light of lamp guide to reduce.
Summary of the invention
Object of the present invention, is to provide a kind of light-guiding lamp and manufacture method thereof, utilizes the present invention, can use side direction to embed light source, load light source from the sidepiece of light conductor, and by the total reflection effect of light conductor and the diffuse reflection effect of reflector layer, realize the diffusion function of light.Such as, both can there are all advantages of LED light source, have again the uniform illumination effect of traditional fluorescent lamp pipe concurrently simultaneously.
The invention provides a kind of light-guiding lamp, this light-guiding lamp includes following structure:
Light conductor is the light guide structure that the curve shape after bar shaped or the bar shaped bending being made into by optical material forms;
Side direction embeds light source, is the light emitting source loading to light conductor inside at the sidepiece of aforementioned light conductor, and its quantity comprises two or more, and the light source loading meets the condition of carrying out total reflection in aforementioned light conductor;
Reflector layer, is arranged on the sidepiece of aforementioned light conductor, carries out diffuse reflection, so that it penetrates from light conductor in order to aforementioned side direction is embedded to the light that light source launches in light conductor.
Further, described light conductor, for cross section is circular or close to circular club shaped structure, or the curvilinear structures being bent to form by club shaped structure.
Further, described light conductor, is by lucite (polymethyl methacrylate, referred to as PMMA), or leaded light plastics, or glass realization.
Further, adopt lucite at described light conductor, described side direction embedded to the angle after light source is injected to lucite, limit with the angle of lucite wall vertical line be 43 degree and more than.
Further, described side direction embeds light source, is provided with to limit side direction and embeds lens or the reflector of light source to incident angle in light conductor.
Further, aforementioned side direction embeds the position of light source in light conductor, for light conductor near the position of reflector layer between shaft position in light conductor.
Further, described side direction embeds light source, with respect to reflector layer, arranges in the both sides of reflector layer.
Further, get the cross section of aforementioned light conductor, the region at aforesaid reflector layer place, with respect to the radian scope at this center, interface, is taken between 80 degree-240 degree.
Further, aforesaid side direction embeds light source on light conductor, and in the situation of extending along axial direction, adjacent side embeds the distance of light source between 0.5cm-20.0cm.
Further, get relative and adjacent side direction and embed light source, will send out direction of light vis-a-vis, with form setting that can be crossing.
Further, described side direction embeds light source, is LED electroluminescent lamp or OLED electroluminescent lamp.
Further, each adjacent side direction embeds light source, be communicated with by wire, or by pcb board, or FPC plate is communicated with.
The present invention also provides a kind of manufacture method of foregoing light-guiding lamp, and the method comprises the steps:
Have flexible light conductor for Yin Gaowen, be pressed into side direction embed light source to the sidepiece of this light conductor by the mode of extrusion, the light that wherein this side direction embedding light source sends can carry out total reflection in aforementioned light conductor, and its quantity comprises two or more;
Until aforementioned light conductor condensation aftershaping.
Further, described light conductor, is to realize by lucite (polymethyl methacrylate, referred to as PMMA).
Further, described Yin Gaowen and to have flexible light conductor be lucite, temperature range is between 96 DEG C-150 DEG C.
Further, in the situation that described light conductor is lucite, described side direction embeds the angle after light source is injected to lucite, limit with the angle of lucite wall vertical line be 43 degree and more than.
Further, the sidepiece of aforementioned light conductor is provided with reflector layer, carries out diffuse reflection, so that it penetrates from light conductor in order to the light that aforementioned side direction embedding light source is launched in light conductor.
Further, aforesaid light-guiding lamp, obtains as follows,
By corresponding reflectorized material in reflector layer, be pre-mixed with lucite, be prefabricated into strip structure;
In the situation that aforesaid light conductor is extruded, simultaneously by the mode of high temperature extrusion, aforementioned prefabricated profiled reflection layer structure and light conductor are combined;
In the situation that reflector layer is combined, more aforesaid LED lamp is embedded to light source as side direction at light conductor, be embedded in the mode of thrusting in the light conductor of lucite material.
Brief description of the drawings
Fig. 1 is the structural representation of light-guiding lamp in the present invention, is a kind of embodiment.
Fig. 2 is the schematic cross-section of light-guiding lamp in the present invention, the light-guiding lamp shown in corresponding Fig. 1 observing from angle A, B.
Fig. 3 is the schematic diagram of total reflection state in the present invention, is a kind of embodiment.
Detailed description of the invention
Embodiment 1
Shown in ginseng Fig. 1, Fig. 2, shown light-guiding lamp described in the invention 100 here, it includes light conductor 110, reflector layer 120, and side direction embeds light source 130.
Light conductor 110 is wherein club shaped structures made by lucite, and its length is 80 centimetres, and cross section is circular, and the diameter in this cross section is 3 centimetres.
Aforesaid lucite, is widely used transparent material in industry, and its formal name used at school is polymethyl methacrylate, referred to as PMMA.The light transmission of lucite is good, and the anti-ability of beating is strong, meanwhile, after being heated, can have softening characteristic, be convenient to processing, and the temperature requirement heating is lower, is easy to realize.
With respect to the environment for use of air or vacuum, the refractive index of lucite is 1.49, and the computing formula of the angle of total reflection is " sinC=1/n ", and C is the angle of total reflection, the refractive index that n is lucite.Calculate and obtain for lucite, angle of total reflection C is 42.155 degree.In the present invention, be preferably this angle 43 degree and more than.Wherein, this angle refers to the angle between the light on light directive light conductor surface and light conductor surface vertical line.
For convenience of the total reflection in understanding the present invention, specifically can further join shown in Fig. 3.As shown in FIG., the angle between the Ray Of Light M1 being sent by side direction embedding light source 130 and light conductor surface vertical line L1 is C1, in the situation that C1 is greater than 42.155 degree, is especially greater than in the situation of 43 degree, and total reflection occurs; And then after total reflection, aforementioned light beam transfers M2 to, angle C2 and C1 between this light beam M2 and light conductor surface vertical line L2 are identical, can trigger equally total reflection, by that analogy.
Embed the ejaculation angle of light source emitted light in order to limit side direction, embed except limiting side direction the position of light source, can also realize in conjunction with the limiting structure of light.Such as, the lens that use by supporting light source or reflector are realized.Embed light source to the incident angle in light conductor by limiting side direction, make it reach the condition of total reflection.
Aforesaid reflector layer 120 is diffuse reflection functional structures that the powder body material by having good diffuse reflection performance is realized.This reflecting material, especially refers to white powder body material, such as white titanium dioxide etc., does not certainly also limit.Reflector layer 120 is by realizing irreflexive function, can embed light that light source 130 sends directly or be irradiated on reflector layer 120 via total reflection after in side direction, if can reach the precondition of transmission via the irreflexive light of reflector layer 120, such as, institute's diffuse light is less than in the situation of aforesaid 42.155 degree with respect to the angle of the surperficial vertical line of light conductor, just can from the light conductor at place 110, transmission go out.
In the time that aforesaid angle is greater than 42.155 degree, light has two kinds of transmission results:
(1) in aforesaid light conductor 110, constantly carry out total reflection, until absorbed by the light conductor at place, or by other structure, as reflector layer 120 absorbs, or side direction embedding light source 130 absorbs.
(2), in total reflection process, after light is injected on reflector layer 120 again, by reflector layer 120 diffuse reflections, if the light after diffuse reflection can meet the condition that penetrates light conductor 110, after diffuse reflection, penetrate the light conductor 110 at place.
This reflector layer 120 preferably evenly arranges along aforementioned bar-shaped light conductor 110, as shown in FIG..Reflector layer 120 on whole light conductor 110, the cross section obtaining for each location point, the region of the reflector layer 120 obtaining and size are applicable to being set to identical version.With respect to the cross section of light conductor 110, the region at reflector layer 120 places, accounts for the radian in whole area of a circle region, be applicable to being selected between 80 degree-240 degree, such as, in the present embodiment, elected as 180 degree, be that is to say, reflector layer 120 is set in the scope of cross section border circular areas half.
Aforesaid side direction embeds light source 130, in the present embodiment, realize by LED lamp, its power elect 0.1 to 5W as (watt).This LED lamp is embedded in aforesaid light conductor 110, and its light sends to the side direction of light conductor, as shown in FIG..Carrying out the object that side direction is sent, is in order to make the sent light can total reflection in aforementioned light conductor 110.Profit in this way, can effectively be avoided each side direction to embed the independent luminous bright spot of light source 130, and can guarantee that, via the emitted light in light conductor 110 sides, main body is the light going out via reflector layer 120 diffuse reflections.
Aforesaid side direction embeds light source 130 on light conductor 110, and in the situation of extending along axial direction, adjacent side embeds the distance of light source 130 between 0.5cm-20.0cm.In the present embodiment, described side direction embeds light source 130 and evenly arranges with respect to the edge of reflector layer 120 both sides, embeds light source 130 in the side direction of the same side, and its spacing is 3 centimetres, and a side is provided with 25.At the opposite side of relative reflector layer 120, be equally evenly provided with 25 side direction and embed light source 130, its spacing is similarly 3 centimetres.Wherein, the side direction of both sides embeds light source 130, and its position interlaces 1.5 centimetres, that is to say, the particular side of a side is to embedding light source 130, and corresponding two adjacent side direction of a relative side embed the center of light sources 130 conventionally.Profit in this way, can obtain more well-balanced light diffuse effect.
Further, can also get relative and adjacent side direction and embed light source 130, will send out direction of light vis-a-vis, with form setting that can be crossing.This setup, makes adjacent side direction embed the light supply mutually of light source 130, thereby sends more well-balanced diffuse light.
With this embodiment, use altogether 50 LED lamps to embed light source 130 as side direction, taking the power of each LED lamp as 4W, general power number is about 200W.As a comparison, under prior art condition, single LED lamp, is also difficult to realize so high power.And high-power LED lamp price is extremely expensive, and caloric value is very big, also impracticable at present.The present invention just can pass through the middle low-power LED lamp of low cost, by the form of array is set, realize high-power after combination, simultaneously, each independently side direction embeds light source 130 and all can independently dispel the heat, solved in this type of light-guiding lamp 100 by which, the heat dissipation problem that urgently need to solve.The light-guiding lamp 100 that makes the type not only with low cost, illumination effect good, and durable in use.
Further, aforesaid side direction embeds light source 130, need to carry out circuit communication by wire, and in addition, the implementation of this wire, can also arrange by pcb board or FPC plate (Flexible Printed Circuit, FPC).In the time arranging by pcb board, in advance by LED lamp layout on pcb board or FPC plate, be then inconjunction with this pcb board or FPC plate and be jointly fixed on aforesaid light conductor 110.
In the present invention, described side direction embeds light source, is preferably LED light source, and in addition, OLED (Organic Light Emitting Diode, Organic Light-Emitting Diode) also has good luminescent properties, is suitable as too side direction and embeds light source.Further, other form of light source, as cathode fluorescent tube (Cold Cathode Fluorescent Lamp), is called for short CCFL; EL (electroluminescence), EL sheet, etc., the side direction that also can be used as candidate embeds light source.
Embodiment 2
A kind of preparation method of light-guiding lamp described in the invention is provided in the present embodiment.The method comprises the steps:
Step S110, prepares lucite raw material, utilizes extrusion device extrude cross section for circle or connect rotund bar shaped light conductor, or is undertaken obtaining the light conductor with curved profile after distortion by bar shaped light conductor;
And, the LED lamp group that wire connection has been carried out in preparation, this lamp group includes default two and above LED lamp.
Step S120, in the moulding of aforementioned extruded light conductor, but in the condition of high temperature, and have in flexible situation, by each LED lamp in aforesaid LED lamp group with form vertical or that there is inclination angle to aforementioned still in high temperature, having flexible light conductor thrusts, it is embedded in aforesaid light conductor, wherein be embedded into the LED lamp in light conductor, be called side direction and embed light source, wherein, to the requirement of embedded LED lamp, it is the angle making between light and the vertical line of aforementioned light conductor wall that LED lamp launches, more than 43 degree, thereby the qualifications that meets this light can carry out total reflection in light conductor.
Step S130, will embed after the light conductor condensation cured of LED lamp, the corresponding sidepiece at aforementioned light conductor, and even coated reflector layer material, this reflector layer material is titanium dioxide powder, occupies 180 degree radian scopes of aforementioned light conductor cross section institute corresponding circle.
Described lucite, it can moulding and has flexible temperature range, conventionally between 96 DEG C-150 DEG C.Depress at normal atmosphere, its thermal denaturation temperature is about 96 DEG C, and softening temperature is about 113 DEG C, and therefore, the extrusion operation that thrusts that carries out LED lamp in this temperature range is suitable.
Wherein, aforesaid reflector layer material, can also be making in the process of light conductor, one-body molded with light conductor.Under the condition of high temperature, will between reflector layer material and light conductor, extrude, thus by reflector layer material cured at light conductor sidepiece.
In addition, the aforementioned scheme that reflector layer is set after light conductor condensation cured, is one of feasible scheme, also has other scheme.
Such as, can also make as follows:
(1) by corresponding reflectorized material in reflector layer, be pre-mixed with lucite, made strip structure, especially laminated structure.
(2), in the situation that aforesaid light conductor is extruded, simultaneously by the mode of high temperature extrusion, aforementioned prefabricated profiled reflection layer structure and light conductor are combined.
(3) at light conductor in the situation that reflector layer is combined, more aforesaid LED lamp is embedded to light source as side direction, be embedded in the mode of thrusting in the light conductor of lucite material.
Utilize aforesaid scheme, can LED lamp be sealed completely by lucite, can avoid like this oxidation process of LED lamp, thereby increase substantially the service life of light fixture.
In addition, between aforesaid LED lamp, be connected by wire, further, this wire can be realized by pcb board or FPC plate.Can in advance LED lamp be embedded in pcb board or FPC plate, then, pcb board or FPC plate be inconjunction with to the LED lamp being located thereon, carry out embedding operation to thering is flexible light conductor, thereby LED lamp is installed in aforesaid light conductor.
It is pointed out that except LED lamp is implanted to the scheme in light conductor in the mode of extruding, can also be by the mode of holing in light conductor, or output the then mode of sealant pouring and sealing of groove, and embed side direction and embed light source, specifically do not limit.
More than the description of this invention and non-limiting, based on other any embodiment of inventive concept, also all among protection scope of the present invention.
Claims (18)
1. a light-guiding lamp, is characterized in that this light-guiding lamp includes following structure:
Light conductor is the light guide structure that the curve shape after bar shaped or the bar shaped bending being made into by optical material forms;
Side direction embeds light source, is the light emitting source loading to light conductor inside at the sidepiece of aforementioned light conductor, and its quantity comprises two or more, and the light source loading meets the condition of carrying out total reflection in aforementioned light conductor;
Reflector layer, is arranged on the sidepiece of aforementioned light conductor, carries out diffuse reflection, so that it penetrates from light conductor in order to aforementioned side direction is embedded to the light that light source launches in light conductor.
2. a kind of light-guiding lamp according to claim 1, is characterized in that: described light conductor, and for cross section is circular or close to circular club shaped structure, or the curvilinear structures being bent to form by club shaped structure.
3. a kind of light-guiding lamp according to claim 1, is characterized in that: described light conductor is by lucite (polymethyl methacrylate, referred to as PMMA), or leaded light plastics, or glass realization.
4. a kind of light-guiding lamp according to claim 3, it is characterized in that: adopt lucite at described light conductor, described side direction is embedded to the angle after light source is injected to lucite, limit with the angle of lucite wall vertical line be 43 degree and more than.
5. a kind of light-guiding lamp according to claim 1, is characterized in that: described side direction embeds light source, is provided with to limit side direction and embeds lens or the reflector of light source to incident angle in light conductor.
6. a kind of light-guiding lamp according to claim 1, is characterized in that: aforementioned side direction embeds the position of light source in light conductor, for light conductor near the position of reflector layer between shaft position in light conductor.
7. a kind of light-guiding lamp according to claim 1, is characterized in that: described side direction embeds light source, with respect to reflector layer, arranges in the both sides of reflector layer.
8. a kind of light-guiding lamp according to claim 1, is characterized in that: get the cross section of aforementioned light conductor, the region at aforesaid reflector layer place, with respect to the radian scope at this center, interface, is taken between 80 degree-240 degree.
9. a kind of light-guiding lamp according to claim 1, is characterized in that: aforesaid side direction embeds light source on light conductor, and in the situation of extending along axial direction, adjacent side embeds the distance of light source between 0.5cm-20.0cm.
10. a kind of light-guiding lamp according to claim 1, is characterized in that: get relative and adjacent side direction and embed light source, will send out direction of light vis-a-vis, with form setting that can be crossing.
11. a kind of light-guiding lamps according to claim 1, is characterized in that: described side direction embeds light source, is LED electroluminescent lamp or OLED electroluminescent lamp.
12. a kind of light-guiding lamps according to claim 1, is characterized in that: each adjacent side direction embeds light source, be communicated with by wire, or by pcb board, or FPC plate is communicated with.
The manufacture method of 13. 1 kinds of light-guiding lamps as claimed in claim 1, is characterized in that the method comprises the steps:
Have flexible light conductor for Yin Gaowen, be pressed into side direction embed light source to the sidepiece of this light conductor by the mode of extrusion, the light that wherein this side direction embedding light source sends can carry out total reflection in aforementioned light conductor, and its quantity comprises two or more;
Until aforementioned light conductor condensation aftershaping.
The manufacture method of 14. a kind of light-guiding lamps according to claim 13, is characterized in that: described light conductor is to realize by lucite (polymethyl methacrylate, referred to as PMMA).
15. according to the manufacture method of a kind of light-guiding lamp described in claim 13 and 14, it is characterized in that: described Yin Gaowen and to have flexible light conductor be lucite, temperature range is between 96 DEG C-150 DEG C.
16. according to the manufacture method of a kind of light-guiding lamp described in claim 13 and 14, it is characterized in that: in the situation that described light conductor is lucite, described side direction embeds the angle after light source is injected to lucite, limit with the angle of lucite wall vertical line be 43 degree and more than.
The manufacture method of 17. a kind of light-guiding lamps according to claim 13, it is characterized in that: the sidepiece of aforementioned light conductor is provided with reflector layer, carry out diffuse reflection in order to the light that aforementioned side direction embedding light source is launched in light conductor, so that it penetrates from light conductor.
The manufacture method of 18. a kind of light-guiding lamps according to claim 13, is characterized in that: aforesaid light-guiding lamp, obtain as follows,
By corresponding reflectorized material in reflector layer, be pre-mixed with lucite, be prefabricated into strip structure;
In the situation that aforesaid light conductor is extruded, simultaneously by the mode of high temperature extrusion, aforementioned prefabricated profiled reflection layer structure and light conductor are combined;
In the situation that reflector layer is combined, more aforesaid LED lamp is embedded to light source as side direction at light conductor, be embedded in the mode of thrusting in the light conductor of lucite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026891.3A CN103925488A (en) | 2013-01-12 | 2013-01-12 | Light guide lamp and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310026891.3A CN103925488A (en) | 2013-01-12 | 2013-01-12 | Light guide lamp and manufacturing method thereof |
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| CN103925488A true CN103925488A (en) | 2014-07-16 |
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| CN201310026891.3A Pending CN103925488A (en) | 2013-01-12 | 2013-01-12 | Light guide lamp and manufacturing method thereof |
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| CN105387422A (en) * | 2015-10-19 | 2016-03-09 | 厦门市和奕华光电科技有限公司 | Lighting device |
| JP2020053213A (en) * | 2018-09-26 | 2020-04-02 | 豊田合成株式会社 | Light-emitting device |
| WO2023051649A1 (en) * | 2021-09-30 | 2023-04-06 | Saint-Gobain Glass France | A light-emittable glass-based article |
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| CN201439888U (en) * | 2009-05-25 | 2010-04-21 | 兴隆发电子股份有限公司 | Curved surface light guide type lamp source |
| CN201547537U (en) * | 2009-04-24 | 2010-08-11 | 欧普特力有限公司 | LED lighting device |
| CN202403049U (en) * | 2012-01-10 | 2012-08-29 | 隆锦宏光电科技股份有限公司 | High-heat-dissipation type light-emitting diode (LED) wide angle light guide lamp tube |
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| US20060028837A1 (en) * | 2004-08-06 | 2006-02-09 | Matthew Mrakovich | Curvilinear LED light source |
| CN201355003Y (en) * | 2009-02-24 | 2009-12-02 | 亚奎科技股份有限公司 | Light-guide rod structure |
| CN201547537U (en) * | 2009-04-24 | 2010-08-11 | 欧普特力有限公司 | LED lighting device |
| CN201439888U (en) * | 2009-05-25 | 2010-04-21 | 兴隆发电子股份有限公司 | Curved surface light guide type lamp source |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105387422A (en) * | 2015-10-19 | 2016-03-09 | 厦门市和奕华光电科技有限公司 | Lighting device |
| JP2020053213A (en) * | 2018-09-26 | 2020-04-02 | 豊田合成株式会社 | Light-emitting device |
| JP7044023B2 (en) | 2018-09-26 | 2022-03-30 | 豊田合成株式会社 | Light emitting device |
| WO2023051649A1 (en) * | 2021-09-30 | 2023-04-06 | Saint-Gobain Glass France | A light-emittable glass-based article |
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Application publication date: 20140716 |