Patent ID: 7434949
Filing Date: 2008-10-14
Classification: H01H,Y10S

Abstract:
1. An illumination device comprising: a control knob having a display portion; a tubular case disposed on a back side of the control knob; a bendable light guide plate attached to seal an upper opening of the tubular case; and a light source disposed at a lower opening of the tubular case, wherein light emitted from the light source is applied to the display portion through the light guide plate, wherein a plurality of retaining projections and a plurality of push-up projections are provided on an inner surface of the tubular case adjacent to the upper opening, and wherein an upper surface of an outer edge of the bendable light guide plate is retained by lower ends of the retaining projections, and a lower surface of the outer edge of the bendable light guide plate is pushed up by upper ends of the push-up projections so that the bendable light guide plate is held inside the tubular case while being bent upwardly.