Light source unit
First Claim
1. A light source unit comprising:
- at least one light-emitting element array having a plurality of light-emitting elements arranged in line;
a printed-circuit board provided separately from said light-emitting element array, and having a printed circuit pattern to be bonded with said light-emitting element array by wires; and
an attachment stand to which said light-emitting element array and said printed-circuit board are fixed, said attachment stand being formed with a substantially V-shaped groove for placing said light-emitting element array, and a side wall of said groove being disposed as a reflection plane in a longitudinal direction of said light-emitting element array,wherein said light-emitting element array is placed on a bottom surface of said groove, and said printed-circuit board is placed on a step formed at a part of said side wall of said groove.
2 Assignments
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Accused Products
Abstract
Light-emitting element arrays having aligned LEDs are fixed to a stand integrally formed with a heat sink. An attachment surface of the stand is formed with V-shaped grooves working as reflection planes for improving irradiation efficiency. The arrays are separated from printed-circuit boards to be bonded therewith by wires. The array is placed at the bottom of the groove. The printed-circuit board is placed on a step formed at a wall of the groove. Since the array is separated from the resinous printed-circuit board having inferior heat conductance, high efficiency of heat radiation is obtained. Further, since the array is disposed close to the wall, unevenness of intensity distribution of the LEDs is prevented from being enlarged.
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Citations
11 Claims
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1. A light source unit comprising:
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at least one light-emitting element array having a plurality of light-emitting elements arranged in line; a printed-circuit board provided separately from said light-emitting element array, and having a printed circuit pattern to be bonded with said light-emitting element array by wires; and an attachment stand to which said light-emitting element array and said printed-circuit board are fixed, said attachment stand being formed with a substantially V-shaped groove for placing said light-emitting element array, and a side wall of said groove being disposed as a reflection plane in a longitudinal direction of said light-emitting element array, wherein said light-emitting element array is placed on a bottom surface of said groove, and said printed-circuit board is placed on a step formed at a part of said side wall of said groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification