CN102022688A - Light emitting diode (LED) lamp and lampshade thereof - Google Patents
Light emitting diode (LED) lamp and lampshade thereof Download PDFInfo
- Publication number
- CN102022688A CN102022688A CN2010102602144A CN201010260214A CN102022688A CN 102022688 A CN102022688 A CN 102022688A CN 2010102602144 A CN2010102602144 A CN 2010102602144A CN 201010260214 A CN201010260214 A CN 201010260214A CN 102022688 A CN102022688 A CN 102022688A
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- lampshade
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004417 polycarbonate Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000012447 hatching Effects 0.000 description 4
- 238000005286 illumination Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The invention provides a lampshade. The cross section of the lampshade is in an arc shape and is intercepted along a line which is basically vertical to the longitudinal direction of the lampshade; the inner surface of the lampshade is provided with a first sawtoothed stripe; the tops of teeth of the first stripe face to the top of the arc shape obliquely and are arranged continuously and regularly along the inner surface of the arc shape; and the included angle of the upper end part of the first stripe and a first end part of an opening of the lampshade is 50-60 degrees, and the included angle of the lower end part of the first stripe and the first end part of the opening of the lampshade is 0-30 degrees. The invention also provides a light emitting diode (LED) lamp comprising the lampshade. In the lampshade provided by the invention, the first sawtoothed stripe is arranged at the inner surface of the arc shape, and the first sawtoothed stripe and the first end part of the opening of the lampshade take on a specified included angle, so that light emitted by a light source can be emerged onto the first sawtoothed stripe and then is refracted, and further the emergent direction of the light is changed into the direction towards the edge part of the lampshade, therefore, the technical problem that the existing LED lamp is brighter at the middle and darker at the edges is solved.
Description
Technical field
The invention belongs to the LED field, relate in particular to a kind of lampshade of LED lamp.
Background technology
At present, it still is a new technique V-neck V territory that LED is applied to lighting field, but also has more technical problem.Please refer to shown in Figure 1ly, be the structural representation of existing LED lamp, described LED lamp comprises light source 11, described light source 11 is arranged on the pcb board 12, pcb board 12 is fixed in the draw-in groove of aluminum pipe 13 settings, is installed in the PC lampshade 14 above the aluminum pipe 13, and the structure of its lampshade 14 and outward appearance are the bright no striped of full impregnated; Perhaps as shown in Figure 2, at the lampshade inwall well-regulated common striped 141 is set.But the height of its striped 141 is lower, approaches circular arc camber, does not form more plane of refraction, because of the luminous of LED lamp has directionality, so the lampshade both sides absorb less than more light, thereby bright in the middle of existing, the problem that both sides are darker.Please refer to lampshade ray space distribution schematic diagram shown in Figure 3: wherein, horizontal line 270 degree place curve extrusion positions are the brighter position of lampshade intermediate rays distribution, and 270 ± 60 zones of writing music the line position are the darker positions of light, lampshade both sides; The 0degrees line is represented the hatching of ray space distribution body 0 degree and 180 degree among this figure, and what the 90degrees line was then represented is the hatching of 90 degree and 270 degree.Please in the lump with reference to lampshade illumination figure shown in Figure 4: wherein, coordinate (0,0) white highlight regions is the middle part of lampshade, coordinate (400 ,-400), (400 ,-400), (400,400), (400,400) position is the darker positions of light, lampshade both sides, the light that this position, chart bright lamp cover both sides is penetrated seldom, essentially no optics luminous intensity distribution is mixed well the brightness design.
Summary of the invention
The present invention is bright in the middle of the existing LED lamp for solving, darker technical problem on the limit, and a kind of lampshade of LED lamp is provided, and can effectively change the light direction of LED lamp, solves darker technical problem on bright in the middle of the existing LED lamp, the limit.
The present invention is achieved through the following technical solutions:
A kind of lampshade, the cross section of described lampshade has arc, described cross section is along the intercepting of line longitudinally that is basically perpendicular to described lampshade, the inner surface of described lampshade has jagged first striped, the oblique top towards arc of the crown of first striped is along the arrangement of the continuous rule of arc-shaped inner surface, the angle of the upper end of described first striped and lampshade opening first end is the 50-60 degree, and the angle of the bottom of first striped and lampshade opening first end is the 0-30 degree.
The present invention also provides a kind of LED lamp, comprises base, is fixed on the pcb board on the base, is arranged on the led light source on the pcb board, wherein also comprises aforesaid lampshade, and described lampshade is fixed on the base.
Lampshade provided by the invention, described lampshade is an arc, by inner surface jagged first striped is set at arc, described jagged first striped and lampshade opening first end are the angle of appointment, simultaneously the oblique top towards arc of first sawtooth point is along the arrangement of the continuous rule of arc-shaped inner surface, can make beam projecting that led light source sends to jagged first striped after, reflect then, light after the refraction passes through after the outer surface of described lampshade again, reflect again, the exit direction of light is become to the limit of lampshade portion.In the time of in being installed on the LED lamp, jagged first striped effectively absorbs light on the limit, do not have several light and propagate along refraction path, has increased the emergent ray on the limit, make on the limit brightness and middle trend evenly, solved darker technical problem on bright in the middle of the existing LED lamp, the limit.
Description of drawings
Fig. 1 is the structural representation of the LED lamp that provides of prior art;
Fig. 2 is the lampshade structure schematic diagram of the LED lamp that provides of prior art;
Fig. 3 is the lampshade ray space distribution schematic diagram of the LED lamp that provides of prior art;
Fig. 4 is the lampshade illumination schematic diagram of the LED lamp that provides of prior art;
Fig. 5 is the structural representation of the LED lamp that provides of the embodiment of the invention;
Fig. 6 is the structure enlarged diagram of I part among Fig. 5;
Fig. 7 is the lampshade ray space distribution schematic diagram of the LED lamp that provides of the embodiment of the invention;
Fig. 8 is the lampshade illumination schematic diagram of the LED lamp that provides of the embodiment of the invention;
Fig. 9 is that the interior light of LED lamp lampshade that the embodiment of the invention provides begins to propagate schematic diagram;
Figure 10 is the interior light refraction propagation path enlarged diagram of LED lamp lampshade that the embodiment of the invention provides.
The specific embodiment
In order to make technical problem solved by the invention, technical scheme and beneficial effect clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Please refer to shown in Figure 5, a kind of lampshade 24, the cross section of described lampshade has arc, described cross section is along being basically perpendicular to the line longitudinally of described lampshade (in Fig. 5, the described direction that vertically is towards the observer) intercepting, the inner surface of described lampshade has jagged first striped 25, the oblique top towards arc of the crown of first striped is along the arrangement of the continuous rule of arc-shaped inner surface, the angle of the upper end of described first striped and lampshade opening first end 241 is β, the span of described β is the 50-60 degree, the angle of the bottom of first striped and lampshade opening first end 241 is α, and the span of described α is the 0-30 degree.
The cross section of described lampshade is an arc, is specifically as follows other arc of semicircular arc, ellipse arc or the like; Preferably, the cross section of described lampshade is a semicircular arc, and described jagged striped is arranged at the inner surface of semicircular arc.
Further, in order better to solve all darker technical problem in existing LED lamp both sides, the inner surface of described lampshade also is provided with jagged second striped 26, the oblique top towards half arc of the crown of second striped is along the arrangement of the continuous rule of arc-shaped inner surface, the structure of described second striped 26 is identical or close with aforementioned first striped 25, the position and the first striped symmetry at the inner surface of arc lampshade, be that the upper end of described second striped and the angle of lampshade opening the second end 242 are β, the span of described β is the 50-60 degree, the angle of the bottom of second striped and lampshade opening the second end 242 is α, and the span of described α is the 0-30 degree.
Please refer to shown in Figure 6, described each striped comprises first side 251, second side 252 and streakline 253, extension intersects at streakline to the lampshade center for first side and second side, and the first side of adjacent stripes is connected successively with the second side, forms described jagged striped.In the present embodiment, described lampshade center refers to the center of circle of semicircular arc, and promptly described sawtooth is outstanding to the center of circle, forms continuous zigzag striped.
The streakline that intersect described first side and second side and the vertical range of described lampshade inner surface are the height of each striped, and with reference to the H that indicates among the figure 6, the diameter ratio of the height of described each striped and semicircular arc lampshade is 1: (15-25).If the diameter ratio of the height of each striped and semicircular arc lampshade was less than 1: 25, described lampshade can not reach effect, and still the meeting centre is bright, both sides are darker; If the diameter ratio of the height of each striped and semicircular arc lampshade was greater than 1: 15, the effect of described lampshade is understood opposite, and promptly the centre is dark, both sides are brighter.
The angle of described first side 251 and second side 252 is θ, and the span of described θ is the 30-60 degree, and the setting of described θ span can make the lighting angle expanded range of LED.Described first side 251 is ε with the angle of lampshade inner surface, and the span of described ε is the 40-60 degree.
The material of described lampshade can be selected from any one in polycarbonate well known to those skilled in the art, polymethyl methacrylate, the polypropylene; Preferably, the material of described lampshade is a polycarbonate.
Please refer again to shown in Figure 5ly, the present invention also provides a kind of LED lamp, comprises base 23, is fixed on the pcb board 22 on the base, is arranged on the led light source 21 on the pcb board, comprises also that wherein aforesaid lampshade, described lampshade are fixed on the base 23; Wherein, described base can adopt the aluminum pipe or the trapezoidal aluminum pipe of the semicircular arc corresponding with aforementioned semicircular arc lampshade.As a kind of concrete embodiment, the two ends of the aluminum pipe of described semicircular arc are provided with groove, and the two ends of described semicircular arc lampshade are provided with corresponding buckle, and during assembling, described buckle stretches in the groove, realize fixedlying connected of lampshade and base.Certainly, those skilled in the art can also adopt other mode to connect, and is connected as long as can realize lampshade and the effective of base.
Further, described pcb board is provided with reflector layer, can realize the diffuse reflection of light in lampshade, and it is more even to make integral body go out light effect.
Please refer to lampshade ray space distribution schematic diagram shown in Figure 7: wherein, horizontal line 270 degree place curve extrusion positions are the brighter position of lampshade intermediate rays distribution, 270 ± 60 line positions of writing music are the position on lampshade both sides, and its curve is obviously outstanding, shows that the bright dipping on both sides is more; The 0degrees line is represented the hatching of ray space distribution body 0 degree and 180 degree among this figure, and what the 90degrees line was then represented is the hatching of 90 degree and 270 degree.Please in the lump with reference to lampshade illumination figure shown in Figure 8: wherein, the white highlight regions of coordinate (0,0) is the middle part of lampshade, coordinate (400,-400), (400 ,-400), (400,400), (400,400) position is the position on lampshade both sides, it is highlighted also to present white, reaches unanimity with coordinate (0,0) lampshade middle part brightness, the light that this position, chart bright lamp cover both sides is penetrated is more, has realized that basically the optics luminous intensity distribution mixes well the brightness design.
Please refer to Fig. 9 and shown in Figure 10, lampshade provided by the invention, described lampshade is an arc, by inner surface jagged first striped is set at arc, described jagged first striped and lampshade opening first end are the angle of appointment, simultaneously the oblique top towards arc of first sawtooth point is along the arrangement of the continuous rule of arc-shaped inner surface, form a plurality of effective planes of refraction, after the light 211 that led light source 21 is sent shines on jagged first striped, reflect then, light 212 after the refraction passes through after the outer surface of described lampshade again, reflects again, and the exit direction of light is become to the limit of lampshade portion.When described lampshade is installed in the LED lamp, jagged first striped effectively absorbs the light that light source sends on the limit, not having several light propagates along refraction path, increased the emergent ray on the limit, make on the limit brightness and middle trend evenly, solved darker technical problem on bright in the middle of the existing LED lamp, the limit.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. lampshade, it is characterized in that, the cross section of described lampshade has arc, described cross section is along the intercepting of line longitudinally that is basically perpendicular to described lampshade, the inner surface of described lampshade has jagged first striped, the oblique top towards arc of the crown of first striped is along the arrangement of the continuous rule of arc-shaped inner surface, and the angle of the upper end of described first striped and lampshade opening first end is the 50-60 degree, and the angle of the bottom of first striped and lampshade opening first end is the 0-30 degree.
2. lampshade according to claim 1 is characterized in that, the cross section of described lampshade is a semicircular arc.
3. lampshade according to claim 2, it is characterized in that, the inner surface of described lampshade also is provided with jagged second striped, the oblique top towards half arc of the crown of second striped is along the arrangement of the continuous rule of arc-shaped inner surface, the angle of the upper end of described second striped and lampshade opening the second end is the 50-60 degree, and the angle of the bottom of second striped and lampshade opening the second end is the 0-30 degree.
4. according to claim 2 or 3 described lampshades, it is characterized in that, described each striped comprises first side, second side and streakline, extension intersects at streakline to the lampshade center for first side and second side, the first side of adjacent stripes is connected successively with the second side, forms described jagged striped.
5. lampshade according to claim 4, it is characterized in that, the streakline that intersect described first side and second side and the vertical range of described lampshade inner surface are the height of each striped, and the diameter ratio of the height of described each striped and semicircular arc lampshade is 1: (15-25).
6. lampshade according to claim 4 is characterized in that, the angle of described first side and second side is the 30-60 degree, and the angle of described first side and lampshade inner surface is the 40-60 degree.
7. lampshade according to claim 1 is characterized in that, the material of described lampshade is a polycarbonate.
8. a LED lamp comprises base, is fixed on the pcb board on the base, is arranged on the led light source on the pcb board, it is characterized in that, also comprises each described lampshade among the claim 1-7, and described lampshade is fixed on the base.
9. LED lamp according to claim 8 is characterized in that described pcb board is provided with reflector layer.
10. LED lamp according to claim 8 is characterized in that, described base is the aluminum pipe of semicircular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102602144A CN102022688B (en) | 2010-08-19 | 2010-08-19 | Light emitting diode (LED) lamp and lampshade thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102602144A CN102022688B (en) | 2010-08-19 | 2010-08-19 | Light emitting diode (LED) lamp and lampshade thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102022688A true CN102022688A (en) | 2011-04-20 |
| CN102022688B CN102022688B (en) | 2012-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102602144A Active CN102022688B (en) | 2010-08-19 | 2010-08-19 | Light emitting diode (LED) lamp and lampshade thereof |
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| CN (1) | CN102022688B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679226A (en) * | 2012-05-31 | 2012-09-19 | 东莞市帝信光电科技有限公司 | LED (light-emitting diode) lamp tube with large luminous surface and no dark zone |
| CN102748636A (en) * | 2012-07-13 | 2012-10-24 | 中山市恒辰光电科技有限公司 | LED (light-emitting diode) fluorescent lamp |
| CN102798091A (en) * | 2012-07-24 | 2012-11-28 | 宁波甬光照明电器有限公司 | Light guide cover used for LED (light emitting diode) cabinet lamp |
| JP2013012453A (en) * | 2011-06-02 | 2013-01-17 | Rohm Co Ltd | Led lamp |
| JP2013214422A (en) * | 2012-04-02 | 2013-10-17 | Endo Lighting Corp | Translucent cover for illumination lamp, and straight tube type illumination lamp |
| CN103629620A (en) * | 2013-11-13 | 2014-03-12 | 厦门晖朗光电有限公司 | Sunlight-type LED lamp tube lamp cover |
| CN113873071A (en) * | 2020-06-12 | 2021-12-31 | 北京小米移动软件有限公司 | Lampshade, optical module and mobile terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10162606A (en) * | 1996-11-27 | 1998-06-19 | Koito Mfg Co Ltd | Light for vehicle |
| CN200979098Y (en) * | 2006-09-07 | 2007-11-21 | 深圳市嘉普通太阳能有限公司 | Accurate induction ceiling lamp |
| CN201221694Y (en) * | 2008-06-10 | 2009-04-15 | 徐泓 | Paster-packaged high power LED tubular light fitting |
| US20100128486A1 (en) * | 2008-11-26 | 2010-05-27 | Wu-Te Peng | Light emitting illuminant |
-
2010
- 2010-08-19 CN CN2010102602144A patent/CN102022688B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10162606A (en) * | 1996-11-27 | 1998-06-19 | Koito Mfg Co Ltd | Light for vehicle |
| CN200979098Y (en) * | 2006-09-07 | 2007-11-21 | 深圳市嘉普通太阳能有限公司 | Accurate induction ceiling lamp |
| CN201221694Y (en) * | 2008-06-10 | 2009-04-15 | 徐泓 | Paster-packaged high power LED tubular light fitting |
| US20100128486A1 (en) * | 2008-11-26 | 2010-05-27 | Wu-Te Peng | Light emitting illuminant |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013012453A (en) * | 2011-06-02 | 2013-01-17 | Rohm Co Ltd | Led lamp |
| JP2013214422A (en) * | 2012-04-02 | 2013-10-17 | Endo Lighting Corp | Translucent cover for illumination lamp, and straight tube type illumination lamp |
| CN102679226A (en) * | 2012-05-31 | 2012-09-19 | 东莞市帝信光电科技有限公司 | LED (light-emitting diode) lamp tube with large luminous surface and no dark zone |
| CN102748636A (en) * | 2012-07-13 | 2012-10-24 | 中山市恒辰光电科技有限公司 | LED (light-emitting diode) fluorescent lamp |
| CN102798091A (en) * | 2012-07-24 | 2012-11-28 | 宁波甬光照明电器有限公司 | Light guide cover used for LED (light emitting diode) cabinet lamp |
| CN103629620A (en) * | 2013-11-13 | 2014-03-12 | 厦门晖朗光电有限公司 | Sunlight-type LED lamp tube lamp cover |
| CN113873071A (en) * | 2020-06-12 | 2021-12-31 | 北京小米移动软件有限公司 | Lampshade, optical module and mobile terminal |
| CN113873071B (en) * | 2020-06-12 | 2024-02-06 | 北京小米移动软件有限公司 | Lampshade, optical module and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102022688B (en) | 2012-02-22 |
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