| 摘要 |
A dial display for providing an indication corresponding to an input signal such as corresponding to the tuning of a radio device. The dial display utilizes a series of light transmitting elements for piping light from a light transfer member to a front display position. The light transmitting elements are grouped to have a front portion thereof effectively define a visually observable dial indicator. The light transfer member is selectively positionable by means of a suitable indicating mechanism such as a meter movement. The transfer member receives light from a light source to produce a localized high level of light emission from the dial display corresponding to the position of the indicating mechanism. The light source is further utilized to provide a background low level illumination emission from the dial display which may be of a color differing from that of the localized high level emission. The transfer member may comprise a piped light member, an apertured member, a filter member, etc., to provide the localized indication in the dial display. The transfer member may also take the form of an opaque element and in effect cast a shadow on the light transmitting elements as an indication of its position. The light transmitting elements may be formed in groups for facilitated assembly.
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