CN104214660A - Lamp and lamp cover - Google Patents
Lamp and lamp cover Download PDFInfo
- Publication number
- CN104214660A CN104214660A CN201310209792.9A CN201310209792A CN104214660A CN 104214660 A CN104214660 A CN 104214660A CN 201310209792 A CN201310209792 A CN 201310209792A CN 104214660 A CN104214660 A CN 104214660A
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- lampshade
- light source
- curved surface
- light
- lamp
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention discloses a lamp cover used for covering a light source of a lamp. The lamp cover is of an axial symmetry structure, the section of the lamp cover is C-shaped, the lamp cover comprises a pair of first curve surfaces and a pair of second curve surfaces, the second curve surfaces are connected with the first curve surfaces in a smooth mode, the second curve surfaces are far away from a light source protrusion, and the first curve surfaces are designed to be symmetric about an axis and are bent in the direction of the light source from a pair of opposite sides of the second curve faces respectively. The invention further provides the lamp. According to the lamp and the lamp cover, the lamp cover is of the axial symmetry structure, the section of the lamp cover is C-shaped, and the second curve surfaces are connected with the first curve surfaces in the smooth mode, so that light emitted by the light source irradiates the periphery after being reflected and retracted by the lamp cover, black patterns or black spots are not prone to being generated on light spots, on the irradiated surface, of the lamp, and uniformity of the light spots of lamp illumination is improved.
Description
Technical field
The present invention relates to field of illuminating lamps, relate in particular to light fixture and lampshade.
Background technology
Lampshade is as one of main element of light fixture, and the structure of lampshade not only affects the outward appearance of light fixture but also affects the performance of light fixture.Existing lampshade is taking simple regular cuboid or simple circle arc as main, and the lampshade moulding of this structure is too stiff, affects the outward appearance of light fixture.Part has the lampshade of irregular curve moulding, incorrect due to Curve Design, make curve junction produce concave surface, the light that light source sends is after irregular camber reflection and refraction, inappropriate due to concave surface place Curve Design, makes light distribution of light inequality from lampshade reflection and refraction, generation blackspot or black streaking, be that hot spot is inhomogeneous, affect illuminating effect.
Summary of the invention
The object of the present invention is to provide the uniform lampshade of a kind of hot spot and light fixture.
In order to solve the problems of the technologies described above, the invention provides a kind of lampshade, for covering the light source of light fixture.Described lampshade is that axially symmetric structure and cross sectional shape are c-shaped, described lampshade comprises a pair of first surface and the second curved surface, described the second curved surface described first surface in smoothing junction, described the second curved surface deviates from described light source projection, the relatively described axis symmetric design of described first surface, and bend to described light source direction from a pair of relative side of described the second curved surface respectively.
The invention provides a kind of light fixture, it comprises lampshade and multiple light source.Described lampshade is axially symmetric structure and covers described light source.The cross sectional shape of described lampshade is c-shaped, and comprise a pair of first surface and the second curved surface, described the second curved surface described first surface in smoothing junction, described the second curved surface deviates from described light source projection, the relatively described axis symmetric design of described first surface, and bend to described light source direction from a pair of relative side of described the second curved surface respectively, described light source is arranged in order on an axis parallel with the symmetry axis of described lampshade.
Wherein, described first surface and described the second curved surface are free form surface.
Wherein, the curve that forms described free form surface is SPL.
Wherein, the material of described lampshade is plastic cement material.
Wherein, the material of described lampshade is polymethyl methacrylate (polymethylmethacrylate, PMMA).
Light fixture provided by the invention and lampshade, utilize lampshade for axially symmetric structure and cross sectional shape c-shaped, simultaneously in smoothing junction between the second curved surface and described first surface, thereby the light that light source sends directive surrounding equably after the reflection of lampshade and refraction, and then light fixture is at difficult blackstreak or the blackspot of producing of hot spot of plane of illumination, has improved the uniformity of lamp lighting hot spot.
Brief description of the drawings
In order to be illustrated more clearly in technical scheme of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic diagram of the light fixture that provides of embodiment of the present invention;
Fig. 2 is the schematic diagram of the lampshade shown in Fig. 1;
Fig. 3 is the index path of the light fixture shown in Fig. 1;
Fig. 4 is the radiation response schematic diagram of the light fixture shown in Fig. 1; And
Fig. 5 and Fig. 6 are the distribution curve flux schematic diagrames of the light fixture shown in Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawing in embodiment of the present invention, the technical scheme in embodiment of the present invention is clearly and completely described.
Please also refer to Fig. 1 and Fig. 2, it is a kind of light fixture 100 provided by the invention.Described light fixture 100 comprises lampshade 10 and multiple light source 30, and lampshade 10 covers light source 30.
In the present embodiment, the material of lampshade 10 is plastic cement material, especially, is polymethyl methacrylate (polymethylmethacrylate, PMMA).
As shown in Figure 2, lampshade 10 is axially symmetric structure, and its cross sectional shape is roughly c-shaped.Lampshade 10 comprises a pair of first surface 12 and the second curved surface 14, the second curved surface 14 described first surface 12 in smoothing junction.Described the second curved surface 14 deviates from described light source 30 projections, and described first surface 12 designs axisymmetricly, and respectively from a pair of relative side of described the second curved surface 14 to described light source 30 direction bendings.
Because lampshade 10 is that axially symmetric structure and cross sectional shape are roughly c-shaped smooth surface, thereby the moulding of light fixture 100 can be also C shape, i.e. the moulding of light fixture 100 has novelty compared to existing cuboid.Simultaneously, because of the second curved surface 14 described first surface 12 in smoothing junction, thereby the light that light source 30 sends is after the reflection and refraction of lampshade 10, directive surrounding equably, there will not be the situation of distribution of light inequality, thereby light fixture 100 is difficult for producing blackstreak or blackspot at the hot spot of plane of illumination, and then improve the throw light on uniformity of hot spot of light fixture 100, solved light fixture in prior art and have at the hot spot of plane of illumination the problem of blackstreak or blackspot.In other words, because lampshade 10 is that axially symmetric structure and cross sectional shape are c-shaped, simultaneously in smoothing junction between the second curved surface 14 and described first surface 12, thereby the light that light source 30 sends directive surrounding equably after the reflection of lampshade and refraction, and then light fixture 100 is difficult for producing blackstreak or blackspot at the hot spot of plane of illumination, improve the throw light on uniformity of hot spot of light fixture 100.
As a further improvement on the present invention, described first surface 12 and the second curved surface 14 are free form surface, and the curve of formation free form surface is SPL.
Because described first surface 12 and the second curved surface 14 are free form surface, and the curve that forms free form surface is SPL, be that described first surface 12 and the second curved surface 14 are to be formed by countless SPLs, thereby the hot spot that the light that light source 30 sends forms after the reflection of lampshade 10 and refraction, that light light source 30 being sent by the multiple SPLs of multiple processes projects overlapping the forming of miniature luminous point that the same region on face to be illuminated forms, the illumination of hot spot and the uniformity of color are further increased, further having solved light fixture in prior art has the problem of blackstreak or blackspot at the hot spot of plane of illumination.
As shown in Figure 1, in the present embodiment, light source 30 is light emitting diode (Light-Emitting Diode, LED), and is arranged in order on an axis 16 (please refer to Fig. 2) parallel with the symmetry axis of described lampshade 10.
In the present embodiment, the spacing of each LEDs is 4.9mm, has 228 LEDs, and is arranged in order on axis 16.
Please also refer to Fig. 3, the light that light source 30 sends after the reflection of lampshade 10 and refraction, directive surrounding equably.
Because lampshade 10 is axially symmetric structure, and light source is arranged in order on axis 16, thereby the light that light source 30 sends is directive lampshade 10 equably, further make light that light source 30 sends after the reflection and refraction of lampshade 10, directive surrounding equably, there will not be the situation of distribution of light inequality, thereby light fixture 100 is difficult for producing blackstreak or blackspot at the hot spot of plane of illumination, and then improved the throw light on uniformity of hot spot of light fixture 100, having solved light fixture in prior art has the problem of blackstreak or blackspot at the hot spot of plane of illumination.
Please also refer to Fig. 4, multiple lambert's type light emitting diodes are arranged on described axis 16.Known by analog simulation, after the light described lambert's type light emitting diode being sent by described lampshade 10 reflects and reflects, form a circular light spot at 1.5 meters far away test positions.
Please also refer to Fig. 5 and Fig. 6, multiple lambert's type light emitting diodes are arranged on described axis 16.Known by analog simulation, after the light described lambert's type light emitting diode being sent by described lampshade 10 reflects and reflects, light intensity is overlapping, thereby the hot spot forming at face to be illuminated be circle.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a lampshade, for covering the light source of light fixture, it is characterized in that, described lampshade is that axially symmetric structure and cross sectional shape are c-shaped, described lampshade comprises a pair of first surface and the second curved surface, described the second curved surface described first surface in smoothing junction, and described the second curved surface deviates from described light source projection, described first surface designs axisymmetricly, and bends to described light source direction from a pair of relative side of described the second curved surface respectively.
2. lampshade according to claim 1, is characterized in that, described first surface and described the second curved surface are free form surface.
3. lampshade according to claim 2, is characterized in that, the curve that forms described free form surface is SPL.
4. lampshade according to claim 3, is characterized in that, the material of described lampshade is plastic cement material.
5. lampshade according to claim 4, is characterized in that, the material of described lampshade is polymethyl methacrylate.
6. a light fixture, it is characterized in that, described light fixture comprises lampshade and multiple light source, described lampshade is axially symmetric structure and covers described light source, the cross sectional shape of described lampshade is c-shaped, and comprise a pair of first surface and the second curved surface, described the second curved surface described first surface in smoothing junction, described the second curved surface deviates from described light source projection, described first surface designs axisymmetricly, and bend to described light source direction from a pair of relative side of described the second curved surface respectively, described light source is arranged in order on an axis parallel with the symmetry axis of described lampshade.
7. light fixture according to claim 6, is characterized in that, described first surface and described the second curved surface are free form surface.
8. light fixture according to claim 7, is characterized in that, the curve that forms described free form surface is SPL.
9. light fixture according to claim 8, is characterized in that, the material of described lampshade is plastic cement material.
10. light fixture according to claim 9, is characterized in that, the material of described lampshade is polymethyl methacrylate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310209792.9A CN104214660A (en) | 2013-05-30 | 2013-05-30 | Lamp and lamp cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310209792.9A CN104214660A (en) | 2013-05-30 | 2013-05-30 | Lamp and lamp cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104214660A true CN104214660A (en) | 2014-12-17 |
Family
ID=52096421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310209792.9A Pending CN104214660A (en) | 2013-05-30 | 2013-05-30 | Lamp and lamp cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214660A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018095805A1 (en) * | 2016-11-22 | 2018-05-31 | Philips Lighting Holding B.V. | Cover for led luminaires |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203000Y (en) * | 2008-07-11 | 2009-03-04 | 东莞凤岗五联励国灯饰制造厂 | LED light fitting |
| CN101684930A (en) * | 2008-09-22 | 2010-03-31 | 义守大学 | Strip lamp device of light emitting diode |
| CN201487807U (en) * | 2009-09-10 | 2010-05-26 | 福升科技股份有限公司 | Lampshade structure |
| CN201636750U (en) * | 2010-01-27 | 2010-11-17 | 广州美晶电子科技有限公司 | Lampshade of LED (Light-Emitting Diode) luminescent lamp |
| CN201715441U (en) * | 2009-11-16 | 2011-01-19 | 刘兴贵 | Lamp shade for LED light bar |
-
2013
- 2013-05-30 CN CN201310209792.9A patent/CN104214660A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201203000Y (en) * | 2008-07-11 | 2009-03-04 | 东莞凤岗五联励国灯饰制造厂 | LED light fitting |
| CN101684930A (en) * | 2008-09-22 | 2010-03-31 | 义守大学 | Strip lamp device of light emitting diode |
| CN201487807U (en) * | 2009-09-10 | 2010-05-26 | 福升科技股份有限公司 | Lampshade structure |
| CN201715441U (en) * | 2009-11-16 | 2011-01-19 | 刘兴贵 | Lamp shade for LED light bar |
| CN201636750U (en) * | 2010-01-27 | 2010-11-17 | 广州美晶电子科技有限公司 | Lampshade of LED (Light-Emitting Diode) luminescent lamp |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018095805A1 (en) * | 2016-11-22 | 2018-05-31 | Philips Lighting Holding B.V. | Cover for led luminaires |
| CN109952468A (en) * | 2016-11-22 | 2019-06-28 | 昕诺飞控股有限公司 | The lid of LED illuminator |
| US10948156B2 (en) | 2016-11-22 | 2021-03-16 | Signify Holding B.V. | Cover for LED luminaires |
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Application publication date: 20141217 |