CN104235763A - LED lighting device - Google Patents
LED lighting device Download PDFInfo
- Publication number
- CN104235763A CN104235763A CN201310236049.2A CN201310236049A CN104235763A CN 104235763 A CN104235763 A CN 104235763A CN 201310236049 A CN201310236049 A CN 201310236049A CN 104235763 A CN104235763 A CN 104235763A
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- CN
- China
- Prior art keywords
- reflector
- light emitting
- emitting diode
- illuminating apparatus
- diode illuminating
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
An LED lighting device comprises a reflection hood and a plurality of LED light sources arranged in the reflection hood. An opening is formed in the reflection hood, the reflection hood comprises an inner surface, an outer surface and a top surface connecting the inner surface and the outer surface, the opening is formed in the inner side of the top surface, the inner surface is a reflection surface, the LED light sources are arranged at the opening and close to the inner side of the top surface, light emitted from the LED light sources is reflected by the inner surface and then emitted outside the LED lighting device, and the reflection hood is made of high-thermal-conductivity materials.
Description
Technical field
The present invention relates to a kind of lighting device, particularly relate to a kind of light emitting diode illuminating apparatus.
Background technology
Compared to traditional light emitting source, light emitting diode (Light Emitting Diode, LED) there is the advantages such as lightweight, volume is little, it is low to pollute, the life-span is long, it is as a kind of novel light source, be applied to more and more in the middle of each field, as street lamp, traffic lights, signal lamp, shot-light and ornament lamp etc.But light emitting diode is in application process, and its rising angle is generally 120 °, and its spotlight effect is not good.
Summary of the invention
Given this, the present invention aims to provide a kind of light emitting diode illuminating apparatus with better spotlight effect.
A kind of light emitting diode illuminating apparatus, comprise reflector and be arranged at the some LED sources in this reflector, this reflector is formed with opening, this reflector has the end face of this inner surface of inner surface, outer surface and connection and outer surface, this opening is formed in this inside top surface, this inner surface is reflecting surface, this some LED source is located at this opening part and this inside top surface close, the light that described LED source sends shines outside light emitting diode illuminating apparatus after this internal surface reflection, and this reflector is made up of highly heat-conductive material.
The present invention is by providing a reflector, and the light that this some LED source sends shines the external world after the reflection of this reflector, thus reaches spotlight effect; In addition, this reflector is metal material, and light emitting diode illuminating apparatus just can reach preferably radiating effect, as this reduced cost without the need to using extra heat abstractor.
Accompanying drawing explanation
Fig. 1 is the top view of light emitting diode illuminating apparatus of the present invention.
Fig. 2 be in Fig. 1 light emitting diode illuminating apparatus along portion's view of II-II line.
Fig. 3 is the cross section curve figure of the inner surface of the reflector of light emitting diode illuminating apparatus in Fig. 2.
The light intensity design sketch that Fig. 4 is the light emitting diode illuminating apparatus shown in Fig. 1.
Another light intensity design sketch that Fig. 5 is the light emitting diode illuminating apparatus shown in Fig. 1.
Main element symbol description
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
As depicted in figs. 1 and 2, the light emitting diode illuminating apparatus 1 that one embodiment of the invention provides, it fixed block 30 comprising a reflector 10, be located at the some LED sources 20 in reflector 10 and this some LED source 20 be fixed on reflector 10.
Above-mentioned reflector 10 is symmetrical along axle OO ', and its cross section is generally u-shaped.Reflector 10 is formed with an opening 11 in this some LED source 20 side.Reflector 10 has inner surface 12, outer surface 13 and the end face 14 being connected inner surface 12 and outer surface 13.Inner surface 12 and outer surface 13 are aspheric surface, and end face 14 is in an anchor ring, and the internal diameter of end face 14 is D.Inner surface 12 is a reflecting surface, through shining the external world by opening 11 after the light that this some LED source 20 sends is reflected by inner surface 12.Preferably, reflector 10 is made up of highly heat-conductive material, and as metal material etc., the heat-conducting effect of reflector 10 like this is better, thus improves the heat dispersion of light emitting diode illuminating apparatus 1.
Fixed block 30 is located at opening 11 place of reflector 10 and is close to the inner surface 12 of reflector 10.In the present embodiment, the cross section of fixed block 30 is roughly triangular in shape.
This some LED source 20 block 30 that is fixed is fixed on inside the end face 14 of reflector 10.This some LED source 20 is symmetrical arranged along axle OO '.Each LED source 20 is close to fixed block 30, and its bottom is resisted against the inner surface 12 of reflector 10, and top is towards the lopsidedness near axle OO '.Each LED source 20 has relative first surface 21 and a second surface 22.In the present embodiment, first surface 21, towards the inside of reflector 10, is exiting surface, and the angle between the plane at end face 14 place of first surface 21 and reflector 10 is θ, and second surface 22 is close to fixed block 30.In the present embodiment, LED source 20 is package structure for LED, and certainly, LED source 20 also can be the LED grain having electrical functionality and connect.In addition, when 0 ≦ θ≤45 °, it is higher to detect light emitting diode illuminating apparatus 1 luminous flux, and its light loss is less.
Understandably, the quantity of this some LED source 20 can suitably increase or reduce, thus reaches the object of the luminous flux controlling light emitting diode illuminating apparatus 1.When the number of LED source 20 increases, the luminous flux of light emitting diode illuminating apparatus 1 also increases, thus adds the uniformity of light emitting diode illuminating apparatus 1 luminescence.
Refer to Fig. 3, in the present embodiment, the cross section of the inner surface 12 of reflector 10 is non-circular arc line, and this non-circular arc line meets following relational expression:
Wherein, ρ is the horizontal range apart from aspheric over glaze; The vertical range that sag (ρ) is corresponding ρ; R is the radius of curvature of aspheric surface summit A; C is the constant of the cone; D is quadravalence non-spherical repairing positive coefficient.And preferably ,-1 < c≤0 ,-D/2 ≦ ρ≤D/2 ,-0.1≤d≤0.1.
If during ρ=D/2=37.5mm, c=0, r=38mm, d=0, refer to Fig. 4, it is detecting distance L=1000mm, the light intensity design sketch of the light emitting diode illuminating apparatus 1 when detector size is 2000mm*2000mm.Can find out, the light intensity in the middle of detector is apparently higher than the light intensity of its surrounding, and the spotlight effect of light emitting diode illuminating apparatus 1 improves greatly.
If ρ=D/2=37.5mm, c=-1, when r=1mm, d=0, refer to Fig. 5, it is detecting distance L=1000mm, the light intensity design sketch of the light emitting diode illuminating apparatus 1 when detector size is 2000mm*2000mm.Can find out, the light intensity in the middle of detector is apparently higher than the light intensity of its surrounding, and the spotlight effect of light emitting diode illuminating apparatus 1 improves greatly.But there is a dark space at the center of detector, cause the uniformity of the light of irradiation area poor, and the shape of reflector 10 is too elongated, its manufacture difficulty increases widely, and institute takes up space also comparatively large, cannot reach the object that device simplifies.
Therefore, preferably, r should meet following relation: 1 < r≤D.If r > is D, its spotlight effect can be deteriorated, if r < 1, then the top of the inner surface 12 of its reflector 10 is too sharp-pointed, and can cause and make upper difficulty increase, yield reduces.
The present invention is by providing a reflector 10, and the light that this some LED source 20 sends shines the external world after reflector 10 reflects, thus reaches spotlight effect; In addition, reflector 10 is made up of thermally conductive materials, makes light emitting diode illuminating apparatus 1 just can reach preferably radiating effect without the need to using extra heat abstractor, and then reduces manufacturing cost.
Technology contents of the present invention and technical characterstic disclose as above, but those skilled in the art still may make all replacement and the modification that do not deviate from spirit of the present invention based on teaching of the present invention and announcement.Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should comprise various do not deviate from replacement of the present invention and modification, and is contained by appended claim.
Claims (9)
1. a light emitting diode illuminating apparatus, comprise reflector and be arranged at the some LED sources in this reflector, it is characterized in that: this reflector is formed with opening, this reflector has the end face of this inner surface of inner surface, outer surface and connection and outer surface, this opening is formed in this inside top surface, this inner surface is reflecting surface, this some LED source is located at this opening part and near this inside top surface, the light that described LED source sends shines outside light emitting diode illuminating apparatus after this internal surface reflection.
2. light emitting diode illuminating apparatus as claimed in claim 1, is characterized in that: this reflector is made up of thermally conductive materials.
3. light emitting diode illuminating apparatus as claimed in claim 1, it is characterized in that: this inner surface and outer surface are aspheric surface, this end face is anchor ring.
4. light emitting diode illuminating apparatus as claimed in claim 3, it is characterized in that: this reflector is axially symmetric structure, its cross section takes the shape of the letter U, this some LED source is arranged along the even circumferential of end face, the bottom of each LED source is resisted against the inner surface of this reflector, and top is towards the symmetry axis lopsidedness of this reflector, and each LED source has a relative first surface and a second surface, this first surface is exiting surface, and towards the inside of this reflector.
5. the light emitting diode illuminating apparatus as described in claim 1 or 4, is characterized in that: the angle between the plane at the end face place of this first surface and this reflector is θ, and 0 ≦ θ≤45 °.
6. the light emitting diode illuminating apparatus as described in claim 1 or 4, is characterized in that: the cross section along its symmetry axis of the inner surface of this reflector is non-circular arc line, and this non-circular arc line meets following relational expression:
Wherein, ρ is the horizontal range apart from aspheric over glaze; The vertical range that sag (ρ) is corresponding ρ; R is the radius of curvature on aspheric surface summit; C is the constant of the cone; D is quadravalence non-spherical repairing positive coefficient.
7. light emitting diode illuminating apparatus as claimed in claim 6, is characterized in that: the internal diameter of this end face is D, wherein-1 < c≤0 ,-D/2 ≦ ρ≤D/2 ,-0.1≤d≤0.1.
8. light emitting diode illuminating apparatus as claimed in claim 7, is characterized in that: 1 < r≤D.
9. light emitting diode illuminating apparatus as claimed in claim 1, it is characterized in that: also comprise one and this some LED source is fixed to a fixed block on this reflector, this fixed block is located at the opening part of this reflector and is close to the inner surface of this reflector, and this some LED source is close to this fixed block.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310236049.2A CN104235763B (en) | 2013-06-17 | 2013-06-17 | LED lighting device |
| TW102121668A TWI565911B (en) | 2013-06-17 | 2013-06-19 | Light emitting diode illuminating device |
| JP2014124141A JP2015002180A (en) | 2013-06-17 | 2014-06-17 | Light-emitting diode luminaire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310236049.2A CN104235763B (en) | 2013-06-17 | 2013-06-17 | LED lighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235763A true CN104235763A (en) | 2014-12-24 |
| CN104235763B CN104235763B (en) | 2017-01-18 |
Family
ID=52224370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310236049.2A Expired - Fee Related CN104235763B (en) | 2013-06-17 | 2013-06-17 | LED lighting device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015002180A (en) |
| CN (1) | CN104235763B (en) |
| TW (1) | TWI565911B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519959A (en) * | 2002-12-05 | 2004-08-11 | 欧姆龙株式会社 | Light emitting source, light emitting arry and appts. adopting such light emitting source |
| JP2007080533A (en) * | 2005-09-09 | 2007-03-29 | Matsushita Electric Works Ltd | Light-emitting diode lighting fixture |
| CN1987636A (en) * | 2005-12-20 | 2007-06-27 | 三星电子株式会社 | Illumination optical system, illumination unit and image projection apparatus employing the same |
| CN102192412A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Reflecting LED lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004186114A (en) * | 2002-12-06 | 2004-07-02 | Nagano Kogaku Kenkyusho:Kk | Light source device |
| JP2012081058A (en) * | 2010-10-12 | 2012-04-26 | Yamada Shadowless Lamp Co Ltd | Medical lighting system |
| JP2012081057A (en) * | 2010-10-12 | 2012-04-26 | Yamada Shadowless Lamp Co Ltd | Medical lighting system |
| US8568000B2 (en) * | 2011-08-29 | 2013-10-29 | Tai-Her Yang | Annular-arranged lamp capable of backward projecting by concave sphere |
-
2013
- 2013-06-17 CN CN201310236049.2A patent/CN104235763B/en not_active Expired - Fee Related
- 2013-06-19 TW TW102121668A patent/TWI565911B/en not_active IP Right Cessation
-
2014
- 2014-06-17 JP JP2014124141A patent/JP2015002180A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519959A (en) * | 2002-12-05 | 2004-08-11 | 欧姆龙株式会社 | Light emitting source, light emitting arry and appts. adopting such light emitting source |
| JP2007080533A (en) * | 2005-09-09 | 2007-03-29 | Matsushita Electric Works Ltd | Light-emitting diode lighting fixture |
| CN1987636A (en) * | 2005-12-20 | 2007-06-27 | 三星电子株式会社 | Illumination optical system, illumination unit and image projection apparatus employing the same |
| CN102192412A (en) * | 2010-03-11 | 2011-09-21 | 上海三思电子工程有限公司 | Reflecting LED lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104235763B (en) | 2017-01-18 |
| JP2015002180A (en) | 2015-01-05 |
| TW201510434A (en) | 2015-03-16 |
| TWI565911B (en) | 2017-01-11 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20200617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |