LED lamp fitting and lamp cover thereof
A technology of light-emitting diodes and lampshades, which is applied in the direction of lampshades, semiconductor devices of light-emitting elements, light sources, etc., and can solve problems that affect the working performance and life of light-emitting diodes, high power density, and large heat generation.
Inactive Publication Date: 2009-12-16
FU ZHUN PRECISION IND SHENZHEN +1
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Problems solved by technology
A module composed of light-emitting diodes can produce high-power, high-brightness light sources, and is increasingly used in lamps instead of existing light sources such as incandescent lamps. However, the light-emitting diodes in the module are usually densely arranged, resulting in the light-emitting diodes The power density of the module is too high, the heat generated is large, and the heat is concentrated and not easy to dissipate, which affects the working performance and life of the LED
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[0014] Please refer to figure 1 , shows a lampshade 10 according to a preferred embodiment of the present invention. The lampshade 10 includes a square body 11 and two concave reflective surfaces 13 and 14 on one side of the body 11 . The main body 11 has a top surface 12, the two reflective surfaces 13, 14 are provided on the top surface 12, the contours of the two reflective surfaces 13, 14 are semi-ellipsoidal surfaces respectively, and the two reflective surfaces 13, 14 intersect On an arc 16 , the two reflective surfaces 13 , 14 are arranged symmetrically relative to the arc 16 . Assume that the centerline of the arc 16 is AB, and the centerline AB is perpendicular to the top surface 12 .
[0015] A focal point of the semi-ellipsoid profile of the reflective surface 13 coincides with a focal point of the semi-ellipsoid profile of the reflective surface 14, that is, the two reflective surfaces 13, 14 have a common focal point O, and the focal point O is located on the cen...
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The invention relates to an LED lamp fitting comprising a lamp cover, a base plate and at least two LEDs, wherein the two LEDs are arranged on the base plate; the lamp cover is covered on the two LEDs, one side of the lamp cover, which is opposite to the base plate, is provided with at least two internal concave reflective surfaces which are both semi-elliptic spherical surfaces with a same focal point; the two LEDs are respectively positioned on another focal point of the two semi-elliptic spherical surfaces; positions of the base plate, which correspond to the two reflective surfaces, are provided with transparent parts; and light rays emitted by the two LEDs respectively irradiate the two reflective surfaces and are reflected by the two reflective surfaces and then emitted out of the transparent parts of the base plate. The invention also discloses the lamp cover. The two LEDs can be arranged at positions of the base plate, which are far away from each other, to prevent from being densely arrayed, thereby the invention can lower the power density and the heat emission concentration ratio, is beneficial to the heat dissipation and ensures the work performance and the service life of the LEDs.
Description
technical field [0001] The invention relates to a lighting device, in particular to a light-emitting diode lamp and a lampshade thereof. Background technique [0002] As an emerging third-generation light source, light-emitting diodes are generally favored by the market because of their advantages such as long working life, energy saving, and environmental protection. A module composed of light-emitting diodes can produce high-power, high-brightness light sources, and is increasingly used in lamps instead of existing light sources such as incandescent lamps. However, the light-emitting diodes in the module are usually densely arranged, resulting in the light-emitting diodes The power density of the module is too high, the heat generated is large, and the heat is concentrated and difficult to dissipate, which affects the working performance and life of the LED. Contents of the invention [0003] In view of this, it is necessary to provide a light-emitting diode lamp and it...
Claims
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IPC IPC(8): F21V3/02F21V7/04F21Y101/02
CPCF21K9/00F21K9/68
Inventor 萧博耀陈冠宇张家寿
Owner FU ZHUN PRECISION IND SHENZHEN