| 摘要 |
PROBLEM TO BE SOLVED: To lower a price of an illumination structure without increasing the number of constituting parts by constituting the illumination structure of a push button formed of a light-transmitting resin material, a light source for illuminating the push button, and a light guide integrally formed with the push button to extend to an insertion/ discharge opening for introducing light of the light source to the insertion/discharge opening. SOLUTION: A push button 30 is a button to be used for operation, with a switch press 32 projecting from a rear side of a press face 31 of a key top. A light guide 33 is integrally formed with the push button 30 to extend from an end face of the push button 30 to a lower face 24 of a deep end 23 of an insertion/discharge opening 21. Since the light guide 33 is integrally formed with the push button 30, an end face of the light guide 33 set along the lower face 24 of the deep end 23 of the insertion/ discharge opening 21 for a cassette tape is illuminated without increasing the number of parts set to a front face 10. Even in a dark room of a vehicle, a position of the insertion/discharge opening 21 becomes easy to find, facilitating inserting and discharging the cassette tape. Since a special light guide plate is not required, part costs and installation man-hours are eliminated, so that costs can be reduced.
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