Panasonic Electric Works Co., Ltd.

Yoshiro Goto

Youji Urano

Takuya Nakatani

Yasuhiro Hidaka

A lighting apparatus with LED includes a metal-made main body; a plurality of LED chip unitseach including an LED chip and a pair of lead terminalselectrically connected to electrodes of the LED chip; and a dielectric layerdisposed between the main bodyand each LED chip unitfor making electrical insulation therebetween as well as bond the same. The circuit boardis formed with a plurality of windowsthrough which the individual LED chip unitsextend respectively with the lead terminals held in electrical contact with the circuit pattern of the circuit board at the circumference of the window, each of the LED chip units being thermally coupled at its bottom face with the main bodythrough the dielectric layer, and the heat generated in the LED chip is conducted to the main body through the dielectric layer without passing through the circuit board.

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Katano, Japan

Yoshiro Goto