Patent ID: 9366392
Filing Date: 2016-06-14
CPC Classification: F21K,F21Y

Claim Text:
1. A straight tube LED lamp comprising: a first substrate and a second substrate on which semiconductor light-emitting elements are arranged in parallel in a longitudinal direction; a chassis with a semi-circular cross section, made from a metal, and extending in the longitudinal direction, to mount the substrate in a chord portion of the semi-circle; a first resin sheet interposed between the chassis and the first substrate; a second resin sheet interposed between the chassis and the second substrate; a translucent element contacting the chassis to form a circle, made from a resin or a glass through which light beams from the semiconductor light-emitting elements are transmitted, and extending in the longitudinal direction; cap elements placed to cover both ends of the chassis and the translucent element, and connectable to a lamp fitting; and a power supply board on which an electronic component is mounted, contained in the chassis, the electronic component supplied with an alternating current via terminals of the cap elements to convert the alternating current to a direct current supplied to the semiconductor light-emitting elements; wherein the power supply board is disposed on the first substrate, the first resin sheet is made from a material with a low thermal conductivity, and the second resin sheet is made from a material with a thermal conductivity to have the semiconductor light-emitting elements on the first and second substrates be saturated at similar temperatures.