CN104295943A - Light-emitting diode lamp - Google Patents
Light-emitting diode lamp Download PDFInfo
- Publication number
- CN104295943A CN104295943A CN201310296138.6A CN201310296138A CN104295943A CN 104295943 A CN104295943 A CN 104295943A CN 201310296138 A CN201310296138 A CN 201310296138A CN 104295943 A CN104295943 A CN 104295943A
- Authority
- CN
- China
- Prior art keywords
- light
- light guide
- guide section
- led lamp
- emitting diode
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
- F21K9/27—Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
Abstract
A light-emitting diode lamp comprises a light guide portion and a light-emitting diode. The light guide portion comprises a light exiting surface and a light incoming surface close to the light exiting surface. The light incoming surface is located on one end of the light guide portion and faces the light-emitting diode. The other end of the light guide portion opposite to the light incoming surface is provided with a reflecting surface. A part of light emitted by the light-emitting diode enters the light guide portion from the light incoming surface, and is then reflected back to the light guide portion by the reflecting surface and emitted from the light exiting surface. The light-emitting diode lamp can return the light back to the light guide portion through reflection of the reflecting surface, thereby improving the luminous efficiency.
Description
Technical field
The present invention relates to a kind of light fixture, refer to a kind of LED lamp especially.
Background technology
Light emitting diode, as emerging light source, has been widely used in the middle of various uses.Current, existing numerous light fixture is equipped with light emitting diode as light emitting source, as street lamp, car light, fluorescent lamp, desk lamp, bulb lamp etc.Existing luminous diode lamp fluorescent lamp is made up of lamp guide and the light emitting diode of being located at lamp guide one end usually.Lamp guide is provided with a large amount of micro-structurals at the back side relative with its exiting surface, for carrying out reflecting or reflecting into the light in lamp guide by being inputted by light emitting diode, to destroy the total reflection of light in lamp guide, light can be penetrated from the exiting surface of lamp guide.
But the light sent due to light emitting diode has high directivity, therefore light is from after one end of LED guide rod enters, and has light greatly can directly through lamp guide, and then from the relative other end injection of lamp guide, light leak occurs.Obviously, any illuminating effect cannot be played from the light of lamp guide other end injection, directly will be slatterned, thus have influence on the light extraction efficiency of whole fluorescent lamp.
Summary of the invention
Therefore, the LED lamp providing a kind of light extraction efficiency higher is necessary.
A kind of LED lamp, comprise light guide section and light emitting diode, light guide section comprises exiting surface and the incidence surface near exiting surface, incidence surface be positioned at light guide section one end and towards light emitting diode, the other end relative with incidence surface of light guide section is provided with reflecting surface, the some light that light emitting diode sends, from after incidence surface enters light guide section, returns in light guide section via reflective surface, then penetrates from exiting surface.
Because the relative other end at light guide section is provided with reflecting surface, the light therefore arriving the light guide section other end can be returned in light guide section by reflective surface, then penetrates from exiting surface.Therefore, LED lamp can reduce light leakage phenomena as far as possible, thus improving extraction efficiency.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the LED lamp of first embodiment of the invention.
Fig. 2 is the schematic diagram of the LED lamp of second embodiment of the invention.
Fig. 3 is the schematic diagram of the LED lamp of third embodiment of the invention.
Fig. 4 is the schematic diagram of the LED lamp of fourth embodiment of the invention.
Fig. 5 is the schematic diagram that the LED lamp of Fig. 4 is installed on daylight lamp holder.
Main element symbol description
| LED lamp | 10 |
| Light guide section | 20 |
| Gap | 200 |
| Exiting surface | 22 |
| Scattering surface | 24 |
| Incidence surface | 26 |
| End face | 28、28a |
| Light emitting diode | 30 |
| Reflector | 40、40a |
| Reflecting surface | 42、42a |
| Convex globoidal | 44 |
| Plane | 44a |
| Micro-structural | 50 |
| Lamp socket | 60 |
| Socket | 62 |
| Lampshade | 64 |
| Plug | 70 |
| End cap | 72 |
| Electrode | 74 |
| Wire | 76 |
| Sleeve | 78 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1, show the LED lamp 10 of first embodiment of the invention.LED lamp 10 is a luminous diode lamp fluorescent lamp.LED lamp 10 comprises a light guide section 20 and is installed on light emitting diode 30 and a reflector 40 of light guide section 20 opposite end respectively.
Light guide section 20 is made up of transparent or semitransparent material, as epoxy resin, Merlon, polymethyl methacrylate etc.In the present embodiment, light guide section 20 is the bar-shaped of lengthwise or strip, and its cross section is rule or the irregular shapes such as circle, rectangle, pentagon.The bottom of light guide section 20 is an exiting surface 22, and top is a scattering surface 24, and left end is an incidence surface 26.In the present embodiment, incidence surface 26 is the plane between exiting surface 22 and scattering surface 24.Light emitting diode 30 is direct or be attached on incidence surface 26 by optical cement, and thus, the light that light emitting diode 30 sends can directly enter in light guide section 20 from incidence surface 26.The scattering surface 24 of light guide section 20 can by a large amount of micro-structurals 50 (as the ink site of printing, the concave point etc. of etching) formed, it can, by the light of incidence towards all directions scattering, make light penetrate light guide section 20 from exiting surface 22.
The right-hand member of light guide section 20 forms the end face 28 of an evagination, and reflector 40 is attached on end face 28.Reflector 40 can be the metal film be directly plated on end face 28, also can for being fixed on the metal cap on end face 28 by modes such as viscose glues.In the present embodiment, end face 28 is an arc surface, reflector 40 also corresponding end face 28 shape and form concave arc shape.The inner surface that reflector 40 contacts with end face 28 forms the reflecting surface 42 of formation one concave arc shape, and the outer surface of reflector 40 is the convex globoidal 44 being parallel to reflecting surface 42.Reflecting surface 42 is just arranged light emitting diode 30.The light that light emitting diode 30 sends is from after incidence surface 26 enters light guide section 20, wherein a part can directly be incident upon on end face 28 through light guide section 20, because end face 28 is provided with reflecting surface 42, therefore this part light will be reflected back in light guide section 20 by reflecting surface 42, is then scattered face 24 scattering and penetrates from exiting surface 22.Thus, LED lamp 10 of the present invention can prevent the end face 28 of light guide section 20 from the situation of light leak occurring, and then promotes overall light extraction efficiency.
Understandably, as shown in Figure 2, the end face 28a of light guide section 20 can also be the plane parallel with incidence surface 26.Now the reflecting surface 42a of reflector 40a still keeps concave arc shape, to play preferably reflecting effect.The curvature that curvature unlike, the reflecting surface 42a of this enforcement compares the reflecting surface 42 of previous embodiment is larger.Separated by gap 200 between the end face 28a of reflecting surface 42a and light guide section 20.The light penetrated from end face 28a needs could arrive reflecting surface 42a through gap 200, and also will again could be returned in light guide section 20 by end face 28a through gap 200 after reflecting via reflecting surface 42a.Reflector 40a coordinates the larger curvature of reflecting surface 42a to form the structure different from previous embodiment.In the present embodiment, the outer surface of reflector 40a is the plane 44a parallel with incidence surface, and the spacing of itself and reflecting surface 42a increases from centre gradually towards both sides.
It is also understood that ground, as shown in Figure 3, the reflector 40a of the second embodiment also can be applicable to, on the end face 28 of the evagination of the light guide section 20 of the first embodiment, can play the effect of light leakage equally.
As illustrated in figures 4-5, in order to the lamp socket 60 of existing fluorescent lamp with the use of, the present invention installs a plug 70 at the left end of light guide section 20 further.Two electrodes 74 that plug 70 comprises an end cap 72 and outwardly protrudes out from end cap 72.Two electrodes 74, for being inserted in the jack of socket 62 of lamp socket 60, also play fixation to LED lamp 10 to power to light emitting diode 30 simultaneously.Light emitting diode 30 is connected with two electrodes 74 respectively by two wires 76, with lamp socket 60 conducting.End cap 72 is sheathed on the left end of light guide section 20 and fixes with light guide section 20.The inside of end cap 72 forms a cavity 720, to accommodate light emitting diode 30.The right-hand member of light guide section 20 is equally also provided with a plug 70.This plug 70 is by the reflector 40a of the 3rd embodiment, the sleeve 78 protruded out from the periphery of reflector 40a and form from two electrodes 74 that reflector 40a outer surface protrudes out.Sleeve 78 is socketed on light guide section 20 right-hand member and lamp socket 60 and light guide section 20 is fixed.The electrode 74 of right-hand member plug 70 is not connected with light emitting diode 30, and it is mainly used for, in the jack of another socket 62 being inserted in lamp socket 60, being jointly fixed on lamp socket 60 by LED lamp 10 to coordinate with left end plug 70.Lamp socket 60 is provided with a lampshade 64 further above two sockets 62, for blocking LED lamp 10, prevents dust or other pollutants from dropping on light guide section 20 and having influence on bright dipping.
Claims (10)
1. a LED lamp, comprise light guide section and light emitting diode, light guide section comprises exiting surface and the incidence surface near exiting surface, incidence surface be positioned at light guide section one end and towards light emitting diode, it is characterized in that: the other end relative with incidence surface of light guide section is provided with reflecting surface, the some light that light emitting diode sends, from after incidence surface enters light guide section, returns in light guide section via reflective surface, then penetrates from exiting surface.
2. LED lamp as claimed in claim 1, is characterized in that: reflecting surface is arcs of recesses.
3. LED lamp as claimed in claim 2, is characterized in that: the relative other end of light guide section forms end face, and light is returned in light guide section by reflective surface through after end face.
4. LED lamp as claimed in claim 3, is characterized in that: reflecting surface fits on the end face relative with incidence surface of light guide section.
5. LED lamp as claimed in claim 3, is characterized in that: have gap between reflecting surface and end face.
6. LED lamp as claimed in claim 5, it is characterized in that: end face is convex, the curvature of end face is less than the curvature of reflecting surface.
7. the LED lamp as described in any one of claim 1 to 6, is characterized in that: be also included in the plug that light guide section is provided with one end installation of incidence surface, plug is electrically connected with light emitting diode.
8. the LED lamp as described in any one of claim 3 to 6, is characterized in that: be also included in the plug that light guide section is provided with one end installation of end face, reflecting surface is the inner surface of plug.
9. LED lamp as claimed in claim 8, is characterized in that: plug comprises the reflector with reflecting surface, the sleeve being formed at reflector periphery and to be formed at outside reflector and the electrode be oppositely arranged with reflecting surface, and jacket casing is located on light guide section.
10. the LED lamp as described in any one of claim 1 to 6, is characterized in that: LED lamp is fluorescent lamp, and light guide section also comprises the scattering surface that relative exiting surface is arranged, and incidence surface is between scattering surface and exiting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296138.6A CN104295943A (en) | 2013-07-16 | 2013-07-16 | Light-emitting diode lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310296138.6A CN104295943A (en) | 2013-07-16 | 2013-07-16 | Light-emitting diode lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104295943A true CN104295943A (en) | 2015-01-21 |
Family
ID=52315791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310296138.6A Pending CN104295943A (en) | 2013-07-16 | 2013-07-16 | Light-emitting diode lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104295943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469815A (en) * | 2018-05-09 | 2019-11-19 | 株式会社小糸制作所 | Light guide |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200502505A (en) * | 2002-12-18 | 2005-01-16 | Sharp Kk | Light guiding board, and lighting device, plane light source device and display device using the light guiding board |
| CN201599729U (en) * | 2009-12-29 | 2010-10-06 | 番禺得意精密电子工业有限公司 | Light-emitting device |
| CN201731428U (en) * | 2006-08-15 | 2011-02-02 | 宜兰汽车配件制造(平湖)有限公司 | Glow stick |
| JP2011210530A (en) * | 2010-03-30 | 2011-10-20 | Ushio Inc | Linear light source device |
| CN102644861A (en) * | 2011-02-22 | 2012-08-22 | 哈利盛东芝照明株式会社 | Light emitting device |
| CN203036312U (en) * | 2012-12-26 | 2013-07-03 | 东莞万士达液晶显示器有限公司 | Lighting device |
| CN103185235A (en) * | 2011-12-31 | 2013-07-03 | 东莞万士达液晶显示器有限公司 | Lighting module |
| CN103883889A (en) * | 2012-12-21 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
-
2013
- 2013-07-16 CN CN201310296138.6A patent/CN104295943A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200502505A (en) * | 2002-12-18 | 2005-01-16 | Sharp Kk | Light guiding board, and lighting device, plane light source device and display device using the light guiding board |
| CN201731428U (en) * | 2006-08-15 | 2011-02-02 | 宜兰汽车配件制造(平湖)有限公司 | Glow stick |
| CN201599729U (en) * | 2009-12-29 | 2010-10-06 | 番禺得意精密电子工业有限公司 | Light-emitting device |
| JP2011210530A (en) * | 2010-03-30 | 2011-10-20 | Ushio Inc | Linear light source device |
| CN102644861A (en) * | 2011-02-22 | 2012-08-22 | 哈利盛东芝照明株式会社 | Light emitting device |
| CN103185235A (en) * | 2011-12-31 | 2013-07-03 | 东莞万士达液晶显示器有限公司 | Lighting module |
| CN103883889A (en) * | 2012-12-21 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | Light source module |
| CN203036312U (en) * | 2012-12-26 | 2013-07-03 | 东莞万士达液晶显示器有限公司 | Lighting device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469815A (en) * | 2018-05-09 | 2019-11-19 | 株式会社小糸制作所 | Light guide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150121 |