LAMP COVER AND ILLUMINATION DEVICE USING THE SAME
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United States of America Patent
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app pub date -
Jun 29, 2012
filing date -
Apr 27, 2012
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Abandoned
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Abstract
A luminous device comprises a light emitting diode (LED) light bar, a heat dissipating device thermally connected with the LED light bar, and a lamp cover made of light permissive material, engaging with the heat dissipating device and covering the LED light bar. The lamp cover is semicylindrical shaped and comprises an outer surface and an inner surface opposite to the outer surface and facing the LED light bar. A thickness of the lamp cover in a radial cross section thereof gradually reduces from a middle of the lamp cover to two opposite lateral sides thereof. Light generated by the LED light bar converges toward a plane orthogonally extending through the middle of the lamp cover after the light travels through the lamp cover.
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