LED lamp unit
First Claim
Patent Images
1. An LED lamp unit comprising:
- one or more LED chips for emitting light; and
an optical lens for transmitting and refracting light emitted from the one or more LED chips, the optical lens having a bottom surface, a side surface and a top surface, the optical lens having a central recess part arranged on a central portion of the top surface, the optical lens having an outer part surrounding the central recess part, the outer part including the remaining portion of the top surface and an entirety of the side surface, wherein the central recess part is hollowed inwardly, and the outer part is formed in a shape of a convex lens,wherein the outer part gradually slopes from and including a mostly upwardly-facing portion of the top surface to and including a mostly sidewardly-facing portion of the side surface, andwherein the one or more LED chips is below the bottom surface of the optical lens corresponding to the central recess part.
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Abstract
A light emitting diode (LED) lamp unit is disclosed for obtain a thin profile display device, to improve uniformity of light, and to simplify a power connection line for operation, which includes an optical lens having a central recess part and an edge, wherein the central recess part is hollowed out inwardly, and the edge is formed in shape of a flat surface or in shape of a convex lens; at least one or more LED chips arranged at fixed intervals in a lower portion of the optical lens; and a lower reflecting sheet positioned on a bottom surface of the LED chip.
13 Citations
27 Claims
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1. An LED lamp unit comprising:
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one or more LED chips for emitting light; and an optical lens for transmitting and refracting light emitted from the one or more LED chips, the optical lens having a bottom surface, a side surface and a top surface, the optical lens having a central recess part arranged on a central portion of the top surface, the optical lens having an outer part surrounding the central recess part, the outer part including the remaining portion of the top surface and an entirety of the side surface, wherein the central recess part is hollowed inwardly, and the outer part is formed in a shape of a convex lens, wherein the outer part gradually slopes from and including a mostly upwardly-facing portion of the top surface to and including a mostly sidewardly-facing portion of the side surface, and wherein the one or more LED chips is below the bottom surface of the optical lens corresponding to the central recess part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An LED lamp unit comprising:
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one or more LED chips for emitting light; and an optical lens for transmitting and refracting light emitted from the one or more LED chips, the optical lens having a central recess part and an outer part surrounding the central recess part, the optical lens including; a bottom surface directly below the central recess part and the outer part; a side surface extending upwardly from the bottom surface; and a top surface extending inwardly the side surface, wherein the side surface and the top surface include an upwardly and inwardly extending surface, wherein the central recess part is hollowed inwardly, and the outer part is formed in a shape of a convex lens, wherein the convex lens has a vertical cross section having a curved surface, wherein the outer part gradually slopes from and including a mostly upwardly-facing portion of the top surface to and including a mostly sidewardly-facing portion of the side surface, and wherein the one or more LED chips below the bottom surface of the optical lens correspond to the central recess part. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. An LED lamp unit comprising:
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one or more LED chips for emitting light; and an optical lens for transmitting and refracting light emitted from the one or more LED chips, the optical lens having a lower surface, a side surface extending upwardly from the lower surface and an upper surface extending inwardly from the side surface, the optical lens having a central recess part arranged on a central portion of the upper surface, the optical lens having an outer part surrounding the central recess part, wherein the outer part gradually slopes from and including a mostly upwardly-facing portion of the upper surface to and including a mostly sidewardly-facing portion of the side surface. - View Dependent Claims (26, 27)
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Specification