| 摘要 |
PURPOSE: An energy saving type lighting apparatus is provided to make a tube type shield with a dual tube structure, thereby saving energy by increasing a heat insulation capacity of the lighting apparatus. CONSTITUTION: A light transmissive tube type shield(70) includes an inner tube(701) and an outer tube(702). A lighting apparatus saves energy by improving a heat insulation capacity. A circuit board(20) is installed in an internal compartment(71) of the tube type shield. The circuit board includes a plurality of semiconductor devices(15), a substrate part(201), and two planar substrate parts(202). A lamp apparatus(30) is fixed in the outer surface of the circuit board. A heat dissipation strip(10) includes a tube type strip main body(101) and a heat dissipation fin(11). |
