公开(公告)号：US20110182163A1

公开(公告)日：2011-07-28

申请号：US13012103

申请日：2011-01-24

申请人： Wataru SATO ,  Yoshihiro Sato ,  Yusuke Kogure

发明人： Wataru SATO ,  Yoshihiro Sato ,  Yusuke Kogure

IPC分类号： G11B7/12 ,  G11B33/02

CPC分类号： G11B7/127

摘要： The following problem associated with optical pickup devices is solved: the temperature of a laser element is increased by excessive temperature rise in a laser driver circuit and this degrades the quality of writing and reading information to and from an optical disc. In an optical pickup enclosure, there is formed a groove recessed into a U shape, extended from the upper surface thereof opposed to an optical disc to the lower surface of the optical pickup enclosure. An air guide passage through which an air flow is passed is formed of this groove recessed into a U shape and a circuit board fastened to the outer circumferential side of the optical pickup enclosure with a screw. At this time, the laser driver circuit element is attached to the side of the circuit board opposed to the air guide passage. In a radiation cover attached to the upper surface of the optical pickup enclosure and in thermal contact with the laser element, an opening is formed. This opening is substantially identical in shape with the aperture area in the air guide passage and is located in a position corresponding to the opening of the air guide passage in the upper surface of the optical pickup enclosure. Thus the air guide passage continues from the opening in the lower surface of the optical pickup enclosure to the surface opposed to the optical disc.

摘要翻译： 解决了与光学拾取装置相关的以下问题：激光驱动电路中的激光元件的温度过高会升高，从而降低向光盘的写入和读取信息的质量。 在光学拾取器外壳中，形成凹陷成U形的凹槽，其从与光盘相对的上表面延伸到光学拾取器外壳的下表面。 空气流通过的空气引导通道由凹陷成U形的凹槽和用螺钉固定到光学拾取器外壳的外周侧的电路板形成。 此时，激光驱动电路元件被安装在与引导通道相对的电路板侧。 在附接到光学拾取器外壳的上表面并与激光元件热接触的辐射罩中，形成开口。 该开口的形状与空气引导通道中的开口面积基本相同，并且位于与光学拾取器外壳的上表面中的空气引导通道的开口相对应的位置。 因此，空气引导通道从光拾取器外壳的下表面中的开口延伸到与光盘相对的表面。