摘要 |
<p>PURPOSE:To facilitate a counter measure without exchanging a front plate by forming a box-type tubular structure whose front and back face are opened, attaching a front plate equipped with plural windows for displaying emitters in parallel to the front face, and moreover sticking a transparent plate equipped with the prescribed number of light transmitting parts to be exchangeable on the top of the windows for displaying the emitters. CONSTITUTION:A box-type tubular structure 10 is constituted of both a cover 1 having a U-shaped cross section and both side faces 1a and a top face 1b, and a bottom plate 2 constituted of a plane face. A front plate 4 equipped with plural windows 4a for displaying the emitters in parallel to the front face is fitted. Moreover, a base on which an electronic circuit package or the like is mounted is housed to be capable of being inserted and drawn out through the back face opening of the tubular structure 10, and a transparent plate 9 equipped with the prescribed number of light transmitting parts 9a is stuck, exchangeably, to a corresponding position on the top of the windows 4a for displaying the emitters. Thus, the tubular structure whose maintenance and workability can be satisfactory can be obtained without changing the appearance of casing and the tubular structure which can facilitate the counter measure can be obtained without exchanging the front face itself even when the number of display of an LED changes.</p> |