| 摘要 |
PROBLEM TO BE SOLVED: To take sufficient measures to deal with emission of heat by efficiently radiating heat from a heat source to the outside. SOLUTION: An optical pickup 7 includes a moving base 8 consisting of a conductive material, and moves, being guided by a pair of guide shafts 5 and 6 which consist of a conductive material. A first bearing part 10 which is brought into point contact with one guide shaft and which is slidably supported by the movable base, and a second bearing parts 11, 11 which are brought into surface contact with the other guide shaft and which are slidably supported by the movable base are provided. A supported member 13 is provided, which is supported by the moving base, and which consists of a conductive material having a third bearing part 13a being brought into surface contact with one of the guide shaft.
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