CN104714268A - Novel large-size LED flat plate lamp - Google Patents
Novel large-size LED flat plate lamp Download PDFInfo
- Publication number
- CN104714268A CN104714268A CN201310688504.2A CN201310688504A CN104714268A CN 104714268 A CN104714268 A CN 104714268A CN 201310688504 A CN201310688504 A CN 201310688504A CN 104714268 A CN104714268 A CN 104714268A
- Authority
- CN
- China
- Prior art keywords
- glass
- light guide
- flat plate
- guide plate
- led
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
Provided is a novel large-size LED flat plate lamp. Multiple sets of high-refractivity plate glass and plastic film layers are stacked to serve as a light guide plate. Because the refractivity of the glass is higher than that of plastic films, total reflection of light rays generates on interfaces of the glass and the films, and therefore each layer of glass becomes a light guide layer, and the light guide distance is large. Since the thickness of the plate glass is much larger than that of the films, the optical coupling performance of the plate glass and LEDs on the side face is good, and most light rays can enter the glass light guide layers. The stacking structure of the multiple layers of the glass and the films is high in mechanical strength and suitable for manufacturing of large-size flat plate lamps, for instance, large-size flat plate lamps with the specifications of 1000 mm*1000 mm or above 1000 mm*1000 mm. In addition, the absorptivity of high-refractivity glass to ultraviolet light is high, and therefore no ultraviolet light is basically emitted by the flat plate lamp made of the light guide plate.
Description
Technical field
The present invention relates to LED lamp field, particularly relate to a kind of large scale LED flat lamp.
Background technology
Current LED flat lamp is generally lateral emitting structure, and namely LED journey arranged in linear arrays is in the both sides of flat lamp, and LED light emission direction is just to transparent plastic light guide plate.LED flat lamp, as making lamp affixed to the ceiling, is widely used in family, the room lighting in office and market.
But the easy photoageing of PMMA material, obviously can decline in the guide-lighting performance of use its light guide plate after 2 to 3 years, thus affect the brightness of flat lamp.In addition, because the refractive index between plastics is more close, so poor in the interface of light guide plate and diffuser plate total reflection effect, cause the face uniformity of luminance of large scale flat lamp poor.Transparent plastic is high for the transmitance of ultraviolet light in addition, and when the ultraviolet band major part sent with its LED during white LED illumination can not be absorbed, during long-time use, ultraviolet light can cause certain injury to human eye.In addition, the mechanical property of plastics, plastics light guide plate is hygroscopic deformation all easily, therefore also limit the use of size flat-panel lamp greatly.
Summary of the invention
Overcome current LED flat lamp cannot realize the luminous uniform problem of large scale to solve, the invention provides a kind of novel large scale LED flat lamp.This flat lamp structure is simple, and physical strength is high, not yielding, anti-photoageing, and face uniformity of luminance is good.This flat lamp is high to uv absorption rate in addition, thus vision protection.
The present invention adopts many group sheet glass and plastic film layers superposition as light guide plate.Wherein sheet glass adopts glass of high refractive index material, and nd value is greater than 1.65.Transparent material selected by plastic sheeting, and refractive index is lower usually, and its nd value is 1.50 ~ 1.55.Like this when multi-layer planar glass and plastic sheeting superposition also compress on surface, because the refractive index of glass is higher than plastic sheeting, light can produce total reflection at the interface of glass and film, and so every one deck glass all becomes optical waveguide layer, and leaded light is distant.Because the thickness of glass plate is far longer than film, so good in the optical coupled performance of side and LED, most of light can enter glass optical waveguide layer.The overlaying structure physical strength of this compound glass and film is very high, is applicable to make large scale flat lamp, such as 1000mmx1000mm or more.In addition because the absorptivity of glass of high refractive index to ultraviolet light is high, so the light adopting the flat lamp of this light guide plate to send does not have ultraviolet light substantially.
Accompanying drawing explanation
Fig. 1 is the LED frame of flat lamp and the planing surface figure of light guide plate.
Fig. 2 is the partial enlarged drawing of the planing surface figure of metal draw-in groove and light guide plate.
Wherein Reference numeral
1 is the stacked light guide plate of many group sheet glass and plastic sheeting;
2 is LED frame;
3 is metal draw-in groove;
4 is LED linear array;
5 is high index of refraction sheet glass;
6 is plastic sheeting;
7 is reflective aluminum film.
Embodiment
Be described in more detail invention below, similar mark represents identical or like.But in order to better understanding, parts shown in accompanying drawing schematically show, they are drawn in proportion, and namely the parts of this accompanying drawing do not represent full-size(d), these full-size(d)s are all known for those of ordinary skills, therefore without the need to being described in detail.
Below with reference to Fig. 1 and Fig. 2.Wherein, LED array 4 is arranged in the inside of LED frame 2, just right with the end face of light guide plate 1.Light guide plate is formed by stacking by sheet glass 5 and plastic sheeting 7.Reflective aluminum film 7 is close to above the superiors' sheet glass.The power of single LEDs is 0.3 ~ 1w.Sheet glass adopts thickness to be the glass of high refractive index of 0.2 ~ 2mm, its refractive index nd>1.65.The thickness of plastic sheeting is 0.01 ~ 0.10mm.
Wherein the job operation of light guide plate is: first sheet glass and plastic sheeting are cut into required size respectively, then adopts the mode of Electrostatic Absorption by sheet glass and plastic film at Superclean workshop.Concrete laminating type is by film side and progressively to opposite side and glass gluing, does like this and the air between glass and film can be made to be discharged in laminating process.To fit other each layer sheet glass and plastic sheetings according to the same method of putting afterwards.The number of plies of glass is relevant with light guide plate area to the thickness of used glass, is generally 2 ~ 8 layers.Light guide plate area is larger, and required total thickness of glass is larger, to increase physical strength; Single-glass is thicker, and the number of plies used is fewer.After multi-layer planar glass and plastic film, the superiors' glass surface laminating reflective aluminum film, is then clamped fixing for the side of light guide plate by metal draw-in groove 3.
Claims (4)
1. a large scale LED flat lamp, wherein the structure of light guide plate is the superposition of many group high index of refraction sheet glass and plastic film layers.
2. the sheet glass according to the claims 1, is characterized in that the thickness of glass is 0.2 ~ 2mm, and the refractive index of glass is nd>1.65.
3. according to the LED flat lamp in the claims described in any one, it is characterized in that, LED can be white or colored, and single LEDs power is 0.3 ~ 1w, and LED array is arranged in the inside of flat lamp edge lamp bracket, and aligns with the end face of light guide plate.
4. according to the LED flat lamp in the claims described in any one, it is characterized in that, after multi-layer planar glass and thin polymer film laminating, the superiors' glass surface laminating reflective aluminum film, is then clamped fixing for the side of light guide plate by metal draw-in groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688504.2A CN104714268A (en) | 2013-12-17 | 2013-12-17 | Novel large-size LED flat plate lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310688504.2A CN104714268A (en) | 2013-12-17 | 2013-12-17 | Novel large-size LED flat plate lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104714268A true CN104714268A (en) | 2015-06-17 |
Family
ID=53413750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310688504.2A Pending CN104714268A (en) | 2013-12-17 | 2013-12-17 | Novel large-size LED flat plate lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104714268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10900657B2 (en) | 2017-08-01 | 2021-01-26 | Technical Consumer Products, Inc. | Edge-lit light fixture having capabilities for a secondary service |
-
2013
- 2013-12-17 CN CN201310688504.2A patent/CN104714268A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10900657B2 (en) | 2017-08-01 | 2021-01-26 | Technical Consumer Products, Inc. | Edge-lit light fixture having capabilities for a secondary service |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |
|
| WD01 | Invention patent application deemed withdrawn after publication |