CN103162113A - Light-emitting diode (LED) light source structure and LED lamp containing LED light source structure - Google Patents
Light-emitting diode (LED) light source structure and LED lamp containing LED light source structure Download PDFInfo
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- CN103162113A CN103162113A CN2011104211084A CN201110421108A CN103162113A CN 103162113 A CN103162113 A CN 103162113A CN 2011104211084 A CN2011104211084 A CN 2011104211084A CN 201110421108 A CN201110421108 A CN 201110421108A CN 103162113 A CN103162113 A CN 103162113A
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Abstract
The invention provides a light-emitting diode (LED) light source structure which comprises a reflector and an LED. The reflector are provided with a reflecting face which is a free curve face and formed by a bus rotating around a symmetric shaft, and the symmetric shaft penetrates through one end point of the bus. The LED is arranged on a center of a circle of a light outlet of the reflector, and a luminous face of the LED is arranged towards the bottom of the reflector in an alignment mode. A reflective face of the LED light source is the free curve face of the symmetric shaft, so that secondary grading can be achieved. The luminous face of the LED is arranged towards the bottom of the reflecting face, so that grading effect of high evenness can be obtained, and high luminous energy utilization efficiency is achieved. The invention further provides an LED lamp with the LED light source structure.
Description
[technical field]
The present invention relates to a kind of light-source structure, particularly relate to a kind of LED light source structure and contain the LED light fixture of this LED light source structure.
[background technology]
Along with the continuous increase of single light emitting diode (Light Emitting Diode, LED) luminous flux, LED is more and more wider in the application of lighting field.Healthy and the raising illuminating effect from the protection human eye, most of occasions all need Uniform Illumination.Yet the light intensity of LED is cosine distribution roughly, in most of the cases all is difficult to satisfy the requirement of Uniform Illumination.Therefore, the LED light source structure is carried out the secondary light-distribution design and just seem particularly important.
At present, traditional LED light source structure occurs mainly with the form of Fig. 1.As shown in Figure 1, LED 1 forward is placed, reflector 2 is positioned over the positive direction of light, the reflecting surface of reflector 2 mostly is sphere or resolves quadratic surface, the shortcoming of this luminous intensity distribution is because quadratic surface can not accurately be controlled light, hot spot on illuminated area is decayed to surrounding gradually from the centre as shown in Figure 1, is difficult to reach uniform requirement.Simultaneously, owing to can only the side light of LED1 being controlled, also having radius outside the scope of illumination radius R is the halation of H, and this part light has also caused the waste of lamp light source energy, and bright dipping is inhomogeneous.
[summary of the invention]
In view of above-mentioned condition, be necessary to provide the higher and bright dipping of a kind of utilization rate LED light source structure comparatively uniformly.
A kind of LED light source structure comprises:
Reflector has reflecting surface, and described reflecting surface is free form surface, and is rotated around symmetry axis by bus and form, and described symmetry axis is through one of them end points of described bus; And
LED is positioned at the circle centre position of the light-emitting window of described reflector, the light-emitting area of described LED towards the bottom of described reflector over against setting.
Further, the curved surface radian of described reflecting surface is 60 degree.
Further, described light-emitting window radius is 45.8 millimeters, and described light-emitting window is highly 16 millimeters to the bottom.
Further, the spacing between the bottom of described LED and described reflector is 16 millimeters.
Further, the curved surface radian of described reflecting surface is 30 degree.
Further, described light-emitting window radius is 49.7 millimeters, and described light-emitting window is highly 15 millimeters to the bottom.
Further, the spacing between the bottom of described LED and described reflector is 15 millimeters.
Further, described LED is a plurality of, and is symmetrical arranged with respect to described symmetry axis.
Simultaneously, the present invention also provides a kind of LED light fixture that contains above-mentioned LED light source structure.
A kind of LED light fixture comprises:
A plurality of above-mentioned LED light source structures are arranged in array; And
Translucent cover is located at above the light-emitting window of described reflector;
Further, also comprise loading plate, offer a plurality of holddown grooves of accommodating described reflector on described loading plate.
The reflecting surface of above-mentioned LED light source structure is axisymmetric free form surface, can realize secondary light-distribution, and the light-emitting area of LED arranges towards the bottom of reflecting surface, thereby can obtain the light distribution effect than high evenness, and has reached higher optical energy utilization efficiency.
[description of drawings]
Fig. 1 is the schematic diagram of traditional LED light source structure;
Fig. 2 is the schematic diagram of the LED light source structure of better embodiment of the present invention;
Fig. 3 is the stereogram of the reflector of LED light source structure shown in Figure 2;
Fig. 4 is the light intensity distribution curve flux figure of the LED light source structure of an embodiment;
Fig. 5 is the illumination curve figure of the LED light source structure of an embodiment;
Fig. 6 is the light intensity distribution curve flux figure of the LED light source structure of another embodiment;
Fig. 7 is the illumination curve figure of the LED light source structure of another embodiment;
Fig. 8 is the schematic diagram of the LED light fixture of better embodiment of the present invention.
[specific embodiment]
For the ease of understanding the present invention, the below is described more fully the present invention with reference to relevant drawings.Provided preferred embodiment of the present invention in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the purpose of these embodiment be make the understanding of disclosure of the present invention more comprehensively thorough.
Need to prove, when element is called as " being fixed in " another element, can directly can there be element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may have simultaneously centering elements.Term as used herein " vertical ", " level ", " left side ", " right side " and similar statement are just for illustrative purposes.
Unless otherwise defined, all technology of using of this paper and scientific terminology are with to belong to the implication that those skilled in the art of the present invention understand usually identical.The term that uses in specification of the present invention herein is not intended to be restriction the present invention just in order to describe the purpose of specific embodiment.Term as used herein " and/or " comprise one or more relevant Listed Items arbitrarily with all combinations." LED " used herein refers to the LED luminescence chip.
See also Fig. 2 and Fig. 3, the LED light source structure 100 of better embodiment of the present invention comprises reflector 110 and LED 120.
In the present embodiment, the curved surface radian measure alpha of reflecting surface 111 is 60 degree.The light-emitting window radius r of reflector 110 is 45.8 millimeters, and light-emitting window is 16 millimeters to bottom height h.Spacing between the bottom of LED 120 and reflector 110 is 16 millimeters.The maximum radian measure alpha of the curved surface of reflecting surface 111 is 150 degree, thereby makes maximum beam angle and optical axis included angle 60 degree.
In other embodiments, the curved surface radian of reflecting surface 111 is 30 degree.The maximum radian measure alpha of the curved surface of reflecting surface 111 is 120 degree, thereby makes maximum beam angle and optical axis included angle 30 degree.
The light-emitting window radius of reflector 110 is 49.7 millimeters, and light-emitting window is highly 15 millimeters to the bottom.Spacing between the bottom of LED and reflector 110 is 15 millimeters.
In the present embodiment, LED 120 is one, and it is positioned at the circle centre position of the light-emitting window of reflector 110.Over against setting, namely the terminal A of the light-emitting area of LED 120 and bus AB is oppositely arranged the light-emitting area of LED 120 towards the bottom of reflector 110.
Need to prove, in order to increase the emitting brightness of LED light source structure 100, LED 120 can be for a plurality of, and are symmetrical arranged with respect to symmetry axis X.For the opening part with LED 120 placements and reflector 110, LED 120 can lie on the sidewall of reflector 110 by finer wire, and because the diameter of finer wire is less, the integral body that can not affect LED light source structure 100 goes out light effect.Perhaps, LED120 also can lie on the sidewall of reflector 110 by many finer wires.Perhaps, also can be fixed on the sealing of reflector 110 by support on glass and LED is contained in the opening part of reflector 110.
See also Fig. 4 and Fig. 5, the bright dipping situation that the curved surface radian of above-mentioned reflecting surface is the LED light source structures of 60 degree is tested, wherein, Fig. 4 is the light intensity distribution curve flux figure of LED light source structure, and Fig. 5 is the illumination curve figure of LED light source structure.By Fig. 4 and Fig. 5 as can be known, the level of illumination visible uniformity of LED light source structure is up to 90%, and capacity usage ratio is 94%, and sharpness of border.
See also Fig. 6 and Fig. 7, the bright dipping situation that the curved surface radian of above-mentioned reflecting surface is the LED light source structures of 30 degree is tested, wherein, Fig. 6 is the light intensity distribution curve flux figure of LED light source structure, and Fig. 7 is the illumination curve figure of LED light source structure.By Fig. 6 and Fig. 7 as can be known, the level of illumination visible uniformity of LED light source structure is up to 90%, and capacity usage ratio is 94%, and sharpness of border.
The reflecting surface 111 of above-mentioned LED light source structure 100 is axisymmetric free form surface, can realize secondary light-distribution, and the light-emitting area of LED 120 arranges towards the bottom of reflecting surface 111, thereby can obtain the light distribution effect than high evenness, and has reached higher optical energy utilization efficiency.
The present invention also provides a kind of LED light fixture that contains above-mentioned LED light source structure.
See also Fig. 8, the LED light fixture 10 of better embodiment of the present invention comprises LED light source structure 100, translucent cover 200 and loading plate 300.
LED light source structure 100 is a plurality of, is arranged in array.For example, a plurality of LED light source structures 100 can be matrix form, Concentric circle array, waveform and arrange.
Offer a plurality of holddown grooves 301 on loading plate 300.The reflector 110 of LED light source structure 100 is fixed in holddown groove 301.For example, reflector 110 can be fixed in holddown groove 301 by modes such as bonding, welding, engagings.Because the lateral wall of the whole inwall of holddown groove 301 and reflector 110 is fitted, can prevent from therefore that reflector 110 is long-time use and be out of shape, and it is less to be subject to extraneous vibration influence.
Because above-mentioned LED light fixture 10 has adopted a plurality of LED light source structures 100, when indivedual LED 120 damage, can directly single led light-source structure 100 be changed and get final product, and traditional LED light fixture is owing to being difficult to change the single led whole light source that needs to change, therefore, above-mentioned LED light fixture 10 change light source more for convenience, and maintenance cost is lower compared to traditional LED light fixture.
Be appreciated that above-mentioned LED light source structure 100 is not limited to be applied on the LED light fixture, also can be applicable on other devices, for example, automobile tail light, stop-light, billboard etc.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.Should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a LED light source structure, is characterized in that, comprising:
Reflector has reflecting surface, and described reflecting surface is free form surface, and is rotated around symmetry axis by bus and form, and described symmetry axis is through one of them end points of described bus; And
LED is positioned at the circle centre position of the light-emitting window of described reflector, the light-emitting area of described LED towards the bottom of described reflector over against setting.
2. LED light source structure as claimed in claim 1, is characterized in that, the curved surface radian of described reflecting surface is 60 degree.
3. LED light source structure as claimed in claim 2, is characterized in that, described light-emitting window radius is 45.8 millimeters, and described light-emitting window is highly 16 millimeters to the bottom.
4. LED light source structure as claimed in claim 2, is characterized in that, the spacing between the bottom of described LED and described reflector is 16 millimeters.
5. LED light source structure as claimed in claim 1, is characterized in that, the curved surface radian of described reflecting surface is 30 degree.
6. LED light source structure as claimed in claim 5, is characterized in that, described light-emitting window radius is 49.7 millimeters, and described light-emitting window is highly 15 millimeters to the bottom.
7. LED light source structure as claimed in claim 5, is characterized in that, the spacing between the bottom of described LED and described reflector is 15 millimeters.
8. LED light source structure as claimed in claim 1, is characterized in that, described LED is a plurality of, and be symmetrical arranged with respect to described symmetry axis.
9. a LED light fixture, is characterized in that, comprising:
A plurality of LED light source structures as described in claim 1～8 any one are arranged in array; And
Translucent cover is located at above the light-emitting window of described reflector.
10. LED light fixture as claimed in claim 1, is characterized in that, also comprises loading plate, offers a plurality of holddown grooves of accommodating described reflector on described loading plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104211084A CN103162113A (en) | 2011-12-15 | 2011-12-15 | Light-emitting diode (LED) light source structure and LED lamp containing LED light source structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104211084A CN103162113A (en) | 2011-12-15 | 2011-12-15 | Light-emitting diode (LED) light source structure and LED lamp containing LED light source structure |
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| CN103162113A true CN103162113A (en) | 2013-06-19 |
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| CN2011104211084A Pending CN103162113A (en) | 2011-12-15 | 2011-12-15 | Light-emitting diode (LED) light source structure and LED lamp containing LED light source structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727466A (en) * | 2014-01-08 | 2014-04-16 | 中国计量学院 | LED blackboard lamp capable of achieving uniform lighting |
| CN105276383A (en) * | 2015-10-23 | 2016-01-27 | 清华大学 | Semiconductor lighting device |
| CN107013818A (en) * | 2017-05-26 | 2017-08-04 | 厦门市东太耀光电子有限公司 | A kind of reflecting type LED lamp |
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| CN2744930Y (en) * | 2004-11-03 | 2005-12-07 | 苏润泽 | LED total reflection parallel light lighting lamp |
| CN2814114Y (en) * | 2005-07-28 | 2006-09-06 | 深圳沃科半导体照明有限公司 | Changeable LED table lamp |
| JP2008234858A (en) * | 2007-03-16 | 2008-10-02 | Ichikoh Ind Ltd | Vehicular lighting fixture |
| CN101701678A (en) * | 2009-09-23 | 2010-05-05 | 安徽师范大学 | Design method for high-power LED lamp |
| CN101782204A (en) * | 2010-04-21 | 2010-07-21 | 广东昭信光电科技有限公司 | LED backlighting structure provided with converted light source and using free-form surface reflector |
| CN201992572U (en) * | 2010-11-24 | 2011-09-28 | 周礼书 | Anti-dazzle LED lamp reflecting bowl and lamp |
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2011
- 2011-12-15 CN CN2011104211084A patent/CN103162113A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2744930Y (en) * | 2004-11-03 | 2005-12-07 | 苏润泽 | LED total reflection parallel light lighting lamp |
| CN2814114Y (en) * | 2005-07-28 | 2006-09-06 | 深圳沃科半导体照明有限公司 | Changeable LED table lamp |
| JP2008234858A (en) * | 2007-03-16 | 2008-10-02 | Ichikoh Ind Ltd | Vehicular lighting fixture |
| CN101701678A (en) * | 2009-09-23 | 2010-05-05 | 安徽师范大学 | Design method for high-power LED lamp |
| CN101782204A (en) * | 2010-04-21 | 2010-07-21 | 广东昭信光电科技有限公司 | LED backlighting structure provided with converted light source and using free-form surface reflector |
| CN201992572U (en) * | 2010-11-24 | 2011-09-28 | 周礼书 | Anti-dazzle LED lamp reflecting bowl and lamp |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727466A (en) * | 2014-01-08 | 2014-04-16 | 中国计量学院 | LED blackboard lamp capable of achieving uniform lighting |
| CN105276383A (en) * | 2015-10-23 | 2016-01-27 | 清华大学 | Semiconductor lighting device |
| CN107013818A (en) * | 2017-05-26 | 2017-08-04 | 厦门市东太耀光电子有限公司 | A kind of reflecting type LED lamp |
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Application publication date: 20130619 |