| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an illuminating device with easy exchange of an LED and without airtightness inside the device damaged upon the exchange and re-assembling. <P>SOLUTION: The illuminating device is provided with a printed circuit board 14, a high-intensity LED 14c, a translucent cylindrical case 10, end-part metal members 21, 22 sealing openings of both ends 10a, 10b of the cylindrical case 10, a heat dissipation board 11 for the high-intensity LED 14c, and packings 20, 20 interposed between the both ends 10a, 10b and the end-part metal members 21, 22 of the cylindrical case 10, with the heat dissipation board 11 jointed to the printed circuit board 14. A contact board part 11c in plane contact with a rear face 22d of the end-part metal member 22 is provided at an end of the heat dissipation board 11, a groove 21g is formed on a rear face 21d of the end-part metal member 21, the other end 11d of the heat dissipation board 11 is made inserted into the groove 21g, and both end openings of the cylindrical case 10 are sealed with the end-part metal members 21, 22 by fastening lid members 21, 22 with a whole screw 13. <P>COPYRIGHT: (C)2010,JPO&INPIT |
