CN101235942A - LED illuminating apparatus - Google Patents
LED illuminating apparatus Download PDFInfo
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- CN101235942A CN101235942A CNA2007100369764A CN200710036976A CN101235942A CN 101235942 A CN101235942 A CN 101235942A CN A2007100369764 A CNA2007100369764 A CN A2007100369764A CN 200710036976 A CN200710036976 A CN 200710036976A CN 101235942 A CN101235942 A CN 101235942A
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Abstract
The invention discloses an LED illuminating apparatus, which comprises a body and an LED mounted on the body, the LED is composed of at least two LED areas with different optical intensity, wherein each LED area is in order symmetrical arrangement along the center of the illuminating apparatus to two sides, the optical intensity of each LED area is steadily increased, and the light distribution curve of the LED illuminating apparatus is in bat wing shape, thereby increasing the illuminating brightness uniformity.
Description
[technical field]
The present invention relates to a kind of LED lighting device, or rather, relate to a kind of LED of utilization combination, thereby make the distribution curve flux of entire lighting device be the LED lighting device that bat wing distributes.
[background technology]
LED has advantages such as environmental protection, energy-conservation, life-span be long and is regarded as the 21 century lighting source, but the lighting angle of LED is little, and between 40～90 degree, promptly its luminous energy concentrates in the scopes of 40～90 degree mostly as the lighting angle of standard type LED.Fig. 9 is the distribution curve flux schematic diagram of LED, and its abscissa α represents the hot spot angle of LED irradiation, and ordinate I represents luminous intensity.The maximum of described LED luminous intensity represents with 1.0, according to the definition of lighting angle as can be known, drops to the hot spot angle α of its peaked half when the luminous intensity of LED
1Be its lighting angle.From figure, can find out intuitively,, then sharply descend in both sides, and energy mainly concentrate on very little hot spot angle α in the luminous intensity maximum of the centre normal direction LED of LED
1In, so the non-constant of illumination uniformity of single LEDs.
Figure 10 is the illumination schematic diagram that LED directly is used in lighting device, and it is the plane LED 92 that is provided with the several parameters unanimity on main body 91.The lighting angle of described LED 92 is θ, and the maximum hot spot angle of described LED lighting device is α
4, the hot spot angle that light intensity drops to largest light intensity one half is α
3Obviously, described hot spot angle α
3Be the lighting angle of LED lighting device.Because the lighting angle θ of LED is less, and the parameter of each LED 92 is all consistent and be the plane and be provided with, and causes the distribution of the light intensity stack back light intensity that each LED 92 produces and the light distribution of single LEDs to be more or less the same the lighting angle α of LED lighting device
3Still very little, its distribution curve flux as shown in figure 11.As seen from the figure, the light intensity of LED lighting device remains the center maximum and energy mainly concentrates on very little angle [alpha]
3In, and in the β angular range, light intensity sharply descends, thus cause the illumination uniformity of LED lighting device still very poor.And,, not only require the brightness of illumination will reach requirement in order to build a kind of healthy and safe lighting environment in a lot of illuminations place, also the uniformity of requirement illumination reaches the requirement of regulation.Existing LED lighting device mainly carries out luminous intensity distribution by Optical devices such as use lens, but these mode luminous intensity distributions not only design complexity, and cost is higher.
[summary of the invention]
Technical problem to be solved by this invention is to overcome above-mentioned defective, and the LED that a kind of cost is lower and the brightness of illumination uniformity is high is provided lighting device.
LED lighting device of the present invention is achieved through the following technical solutions: a kind of LED lighting device, comprise main body and be installed on LED on the main body, described LED is made up of at least two different LED districts of light intensity, wherein, each LED district increases progressively successively along the light intensity of center symmetric arrays and each LED district generation in regular turn toward both sides of lighting device, and makes the distribution curve flux of LED lighting device be bat wing.
Described LED comprises one the one LED district and the 2nd LED district, and described the 2nd LED district is that the center is the outside that is symmetrically distributed in a LED district with a LED district, and the light intensity that described the 2nd LED district produces is greater than a LED district.
The power of each LED is greater than the power of each LED in the described LED district in described the 2nd LED district.
The lighting angle of each LED is greater than the lighting angle of each LED in the described LED district in described the 2nd LED district.
Described LED is the curved surface shape and is arranged on the main body.
Described LED also comprises one the 3rd LED district, and wherein, symmetric arrays and light intensity increase progressively successively in regular turn along past both sides, the center of lighting device for a LED district, the 2nd LED district and the 3rd LED district.
Compared with prior art, LED LED illumination device of the present invention is made up of at least two different LED districts of light intensity, and each LED district is increased progressively successively along the light intensity of center symmetric arrays and each LED district generation in regular turn toward both sides of lighting device, thereby the distribution curve flux that makes the LED lighting device is bat wing, effectively raise the illumination uniformity of LED lighting device, and simplified design, reduced cost.
[description of drawings]
Fig. 1 is LED lighting device embodiment one structural perspective of the present invention.
Fig. 2 is LED lighting device embodiment one illumination schematic diagram of the present invention.
Fig. 3 is LED lighting device embodiment one a distribution curve flux schematic diagram of the present invention.
Fig. 4 is LED lighting device embodiment two structural perspective of the present invention.
Fig. 5 is LED lighting device embodiment three structural perspective of the present invention.
Fig. 6 is LED lighting device embodiment three illumination schematic diagrames of the present invention.
Fig. 7 is LED lighting device embodiment three distribution curve flux schematic diagrames of the present invention.
Fig. 8 is LED lighting device embodiment four structural perspective of the present invention.
Fig. 9 is a LED distribution curve flux schematic diagram.
Figure 10 directly is used in the illumination schematic diagram of lighting device for LED.
Figure 11 directly is used in the distribution curve flux schematic diagram of lighting device for LED.
[specific embodiment]
Embodiment one
See also Fig. 1 and Fig. 2, LED lighting device of the present invention comprises main body 1 and LED 2, wherein, the back side of main body 1 is provided with some fin 10, LED 2 is plane and is installed on the main body 1, described LED 2 is made up of with the 2nd LED district 22 that is positioned at 21 outsides, a described LED district a LED district 21 that is positioned at central authorities, and described the 2nd LED district 22 is that the center is symmetrical distribution with a described LED district 21.In order to distinguish a LED district 21 and the 2nd LED district 22 more intuitively, in the drawings the 2nd LED district 22 is dotted.If the lighting angle of described LED 2 is θ, the maximum hot spot angle of LED lighting device is α
6, its lighting angle is α
5In order to improve the uniformity of the light distribution in the illuminating device luminous angle of LED, make maximum hot spot angle α simultaneously
6With lighting angle α
5Difference reduce, even the δ angle reduces, to reach the uniformity that improves the whole LED lighting device lighting, the light intensity that should make 22 generations of the 2nd LED district is greater than a LED district 21, to remedy the rapid decline of the relative central light strength of lighting device both sides light intensity, simultaneously, because the light intensity in the 2nd LED district 22 is bigger, result of light intensity stack that each LED produces in its district makes in the δ angle near the light intensity increase of lighting device central area, thereby move outward on half the border that makes the light intensity of hot spot in this angle drop to largest light intensity, and promptly the δ angle reduces.The modes such as lighting angle that increase each LED in the time of power that the light intensity in described the 2nd LED district 22 can be by increasing each LED in this district and the power that increases each LED reach.In this specific embodiment, the light intensity in the 2nd LED district 22 is to realize by the power that increases each LED in this district.Because the power of LED 22 is big than the power of LED 21, therefore the outer also corresponding increase of light intensity of each LED lighting angle in should distinguishing, the result of its light intensity stack is that the light intensity increase is bigger naturally, reduce thereby make in the δ angle to differ by the light intensity of lower-powered LED district generation near the light intensity of lighting device central area and lighting device center, that is to say that light intensity is reduced to half zone of largest light intensity and increases, promptly δ reduces.
The distribution curve flux of described LED lighting device as shown in Figure 3.Can find out intuitively that from figure the distribution curve flux of LED lighting device is bat wing.Because the power of each LED is big than the power of each LED in the LED district 21 at center in the 2nd LED district 22 in the outside, therefore, brightness increases gradually from the center toward both sides.In outermost, because the restriction of LED lighting angle itself make the intensity of whole LED lighting device still sharply descend, but as last surface analysis, the light intensity that increases the 2nd LED district 22 reduces the δ angle, so the lighting angle α of LED lighting device
5Very near maximum hot spot angle α
6Obviously, LED lighting device compared to single power LED formation, because at the bigger LED of outside allocating power, under the condition that does not change other parameters, make the distribution curve flux of whole LED lighting device be the distribution of bat wing, obviously improved the luminance uniformity of illumination, had significant illuminating effect compared to prior art.
In the present embodiment, though owing to adopted the different LED combination of power that the luminance uniformity of illumination is greatly improved, the whole LED lighting device is subjected to the little influence of LED lighting angle equally, makes the illumination zone of LED lighting device little.Thereby this kind mode is applicable to that mainly illumination zone requires little place, as room lighting etc.
Certainly, illumination zone for suitable increase LED lighting device, can when increasing the 2nd LED district 22 power, increase the lighting angle of each LED in this district, only need match the parameter in the 2nd a LED district 22 and a LED district 21, make the distribution curve flux of LED lighting device be bat wing, obtain the good brightness of illumination uniformity when illumination zone of lighting device is increased.
Embodiment two
See also Fig. 4, LED lighting device of the present invention comprises main body 3 and LED 4 equally, and wherein, the back side of main body 3 is provided with some fin 30, and LED 4 is plane and is installed on the main body 3.Described LED4 is made up of the LED district 41, the 2nd LED district 42 and the 3rd LED district 43 that are positioned at central authorities.Wherein, arrange toward both sides in regular turn along the center of lighting device and light intensity increases progressively successively in a LED district 41, the 2nd LED district 42 and the 3rd LED district 43.In order to distinguish each LED district more intuitively, in the drawings the 2nd LED district 42 usefulness thin dashed line are represented that the 3rd LED district 43 dots.Equally, the modes such as lighting angle that increase each LED power that the light intensity in described the 2nd LED district 42 and the 3rd LED district 43 can be by increasing each LED in this district and the power that increases each LED the time reach.In this concrete enforcement is to realize by the power that increases each LED.
Compared to embodiment one, though the distribution curve flux of described LED lighting device still is bat wing, but owing between LED district 41 of power minimum and prominent the 3rd LED district 43, added a power transition region the 2nd LED district 42, make that brightness is unlikely to increase suddenly excessive between the field of illumination in the field of illumination in a LED district 41 and the 3rd LED district 43, therefore, the brightness of LED lighting device increases steadily from the center toward both sides.Simultaneously, the outer light intensity of each LED lighting angle increases than each LED in the LED district 41 again in the 2nd LED district 42, certain compensating action has also been played in the brightness that outermost the 3rd LED district 43 lighting angles are outer, thereby made the brightness of illumination uniformity of whole LED lighting device better.
Equally, also can in increasing the 2nd LED district 42 and the 3rd LED district 43, increase the lighting angle of each LED in each LED power, only need match the parameter in each district, make the distribution curve flux of LED lighting device be bat wing, obtain the good brightness of illumination uniformity when illumination zone of lighting device is increased.
Embodiment three
See also Fig. 5 and Fig. 6, LED lighting device of the present invention comprises main body 5 and LED 6, and wherein, the back side of main body 5 is provided with some fin 50, and LED 6 is arc surfaced and is installed on the main body 5.Described LED 6 is made up of with the 2nd LED district 62 that is positioned at the described first district LED 61 outsides a LED district 61 that is positioned at central authorities, and described the 2nd LED district 62 is that the center is symmetrical distribution with a described LED district 61.In order to distinguish a LED district 61 and the 2nd LED district 62 more intuitively, in the drawings the 2nd LED district 62 is dotted.The light intensity that described the 2nd LED district 62 produces is greater than the light intensity of a LED district 61 generations, and the modes such as lighting angle that increase each LED in the time of power that the light intensity in the 2nd LED district 62 can be by increasing each LED in this district and the power that increases each LED reach.This specific embodiment is to realize by the power that increases LED equally.
If the lighting angle of described LED 6 is θ, the maximum hot spot angle of LED lighting device is α
8, its lighting angle is α
7Obviously, because LED 6 is the cambered surface configuration, though the lighting angle θ of LED6 does not increase, the lighting angle of whole LED lighting device is α
7Obviously increase, therefore, illumination zone improves a lot than planar configuration.Simultaneously, because the power in the 2nd LED district 62 is big than the power in a LED district 61 at center, the result of the light intensity stack that each LED produces in the 2nd LED district 62 makes in the γ angle near the light intensity increase of lighting device central area, thereby move outward on half the border that makes the light intensity of hot spot in this angle drop to largest light intensity, promptly makes the γ angle reduce.In addition, though because LED is the cambered surface configuration, the light path in the 2nd peripheral LED district 62 is obviously greater than the light path in a LED district 61 of central authorities, its irradiated area also obviously increases, but the light intensity in the 2nd LED district 62 is greater than a LED district 61, descends thereby remedied because of propagation distance reaches the brightness that irradiated area causes greatly greatly.So its distribution curve flux as shown in Figure 7, and this distribution curve flux still is bat wing, and the luminance uniformity of illumination is higher.Compared to the LED lighting device that same curved surface is arranged and is made of single power LED, the luminance uniformity of illumination improves a lot.
In the present embodiment, owing to adopted the different LED combination of power that the luminance uniformity of illumination is greatly improved, simultaneously by LED being the cambered surface configuration, overcome the LED lighting device to a certain extent do not influenced by the LED lighting angle to cause the little defective of LED lighting device lighting scope, increased the illumination zone of whole LED lighting device very much.Therefore, these designs make the LED lighting device can also well be applied to the big place of illumination zone, as street lamp, Tunnel Lamp, Projecting Lamp etc.
Embodiment four
See also Fig. 7, present embodiment and embodiment three differences are: described LED 7 is made up of the LED district 71, the 2nd LED district 72 and the 3rd LED district 73 that are positioned at central authorities.Wherein, arrange toward both sides in regular turn along the center of lighting device and light intensity increases progressively successively in a LED district 71, the 2nd LED district 72 and the 3rd LED district 73.In order to distinguish each LED district more intuitively, in the drawings the 2nd LED district 72 usefulness chain-dotted lines are represented that the 3rd LED district 73 dots.Equally, the modes such as lighting angle that increase each LED power that the light intensity in described the 2nd LED district 42 and the 3rd LED district 43 can be by increasing each LED in this district and the power that increases each LED the time reach.
Compared to embodiment one, though the distribution curve flux of described LED lighting device still is bat wing, but owing between LED district 71 of power minimum and prominent the 3rd LED district 73, added a power transition region the 2nd LED district 72, make that brightness is unlikely to increase suddenly excessive between the field of illumination in the field of illumination in a LED district 71 and the 3rd LED district 73, therefore, the brightness of LED lighting device increases steadily from the center toward both sides.Simultaneously, the outer light intensity of each LED lighting angle increases than each LED in the LED district 71 again in the 2nd LED district 72, certain compensating action has also been played in the brightness that outermost the 3rd LED district 73 lighting angles are outer, thereby made the brightness of illumination uniformity of whole LED lighting device better.
Certainly, the LED lighting device can be selected different LED combinations as the case may be in the various embodiments described above, comprise the power of LED, the lighting angle of LED and the packing density of LED etc., only need the parameter matching in each LED district suitable, make the distribution curve flux of LED lighting device be bat wing the lighting device lighting luminance uniformity is significantly improved.In addition, can also make the brightness of illumination uniformity better, carry out luminous intensity distribution as on each LED, adding various lens etc. in conjunction with modes such as Optical devices luminous intensity distributions.
More than describing is embodiments of the invention only, forgives and can understand, and under the prerequisite that does not depart from the present invention's design, all should be included within the technical conceive of the present invention simple modification of the present invention and replacement.
Claims (6)
1. LED lighting device, comprise main body and be installed on LED on the main body, it is characterized in that: described LED is made up of at least two different LED districts of light intensity, wherein, each LED district increases progressively successively along the light intensity of center symmetric arrays and each LED district generation in regular turn toward both sides of lighting device, and makes the distribution curve flux of LED lighting device be bat wing.
2. LED lighting device as claimed in claim 1, it is characterized in that: described LED comprises one the one LED district and the 2nd LED district, described the 2nd LED district is that the center is the outside that is symmetrically distributed in a LED district with a LED district, and the light intensity that described the 2nd LED district produces is greater than a LED district.
3. LED lighting device as claimed in claim 2 is characterized in that: the power of each LED is greater than the power of each LED in the described LED district in described the 2nd LED district.
4. LED lighting device as claimed in claim 3 is characterized in that: the lighting angle of each LED is greater than the lighting angle of each LED in the described LED district in described the 2nd LED district.
5. LED lighting device as claimed in claim 2 is characterized in that: described LED is the curved surface shape and is arranged on the main body.
6. LED lighting device as claimed in claim 2 is characterized in that: described LED also comprises one the 3rd LED district, and wherein, symmetric arrays and light intensity increase progressively successively in regular turn along past both sides, the center of lighting device for a LED district, the 2nd LED district and the 3rd LED district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100369764A CN101235942A (en) | 2007-01-30 | 2007-01-30 | LED illuminating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100369764A CN101235942A (en) | 2007-01-30 | 2007-01-30 | LED illuminating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101235942A true CN101235942A (en) | 2008-08-06 |
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ID=39919752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100369764A Pending CN101235942A (en) | 2007-01-30 | 2007-01-30 | LED illuminating apparatus |
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| Country | Link |
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| CN (1) | CN101235942A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133919A (en) * | 2011-11-30 | 2013-06-05 | 林万炯 | Lamp even in illuminance |
| CN103244843A (en) * | 2012-02-14 | 2013-08-14 | 升泰科技股份有限公司 | Variable beam lighting device and method of assembling same |
| CN104763916A (en) * | 2015-04-09 | 2015-07-08 | 上海学习之光电子科技有限公司 | LED table lamp for reading-writing visual task |
-
2007
- 2007-01-30 CN CNA2007100369764A patent/CN101235942A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133919A (en) * | 2011-11-30 | 2013-06-05 | 林万炯 | Lamp even in illuminance |
| CN103244843A (en) * | 2012-02-14 | 2013-08-14 | 升泰科技股份有限公司 | Variable beam lighting device and method of assembling same |
| CN104763916A (en) * | 2015-04-09 | 2015-07-08 | 上海学习之光电子科技有限公司 | LED table lamp for reading-writing visual task |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080806 |