| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrain deviation in the on/off timing of a light source by influence of the reflected light from a bicycle component, in a headlamp for a bicycle having a lighting window. <P>SOLUTION: The headlamp 14 has the light source 24, a case body 34, a bracket 32, an illuminance-detecting element 26 and a shielding part 30. The case body has the lighting window and is a member for storing the light source. The bracket is a member capable of installing the case body in the bicycle. The illuminance-detecting element is arranged inside the case body so as to face the lighting window and is an element for turning on and off the light source by peripheral brightness. The shielding part is arranged separately from the lighting window in an external part of the lighting window and restricts the light incident on the illuminance-detecting element. <P>COPYRIGHT: (C)2010,JPO&INPIT |
