Indicator member, indicator unit and indicator instrument

Abstract

[Problem to be solved] To provide an inexpensive indicator member which can prevent a dark area from being formed at a location above a reflection part, an indicator unit having the indicator member and an indicator instrument having the indicator unit.[Solution to Problem] A hollow reflection part provided to an indicator part of an indicator main body of a light-emitting indicator includes a plurality of partial reflection parts having at least an pointing direction reflection face, a rear end direction reflection face and a corner formed at an intersection of the pointing direction reflection face and the rear end direction reflection face and arranged at a location opposed to the base part. The corners of the respective partial reflection parts adjacent to each other are displaced in a pointing direction or in a rear end direction.

Description

TECHNICAL FIELD[0001](1.1), (2.1), (3.1)The present invention relates to an indicator member made of translucent material which becomes luminous by receiving the light from a light source, an indicator unit having said indicator member and an indicator instrument having said indicator unit.[0002](4.1)The present invention relates to an indicator member arranged to guide the light from a translucent indicator shaft to be luminous, an indicator unit having said indicator member and an indicator instrument having said indicator unit.BACKGROUND ART[0003](1.2)In general, a vehicle is mounted with a vehicle display device arranged to display a measured value such as vehicle speed and engine revolution number, and in many vehicles said vehicle display device is constituted of an indicator instrument. The indicator instrument includes a meter case which houses a dial plate having a surface provided with indexes such as scale marks and numbers, letters or symbols, an indicator unit positione...

AI Technical Summary

Benefits of technology

The invention provides a new design for an indicator member that prevents dark areas and non-uniform brightness. The reflection part includes multiple partial reflection parts, which scatter the brightness in the pointing direction and rear end direction. The indicator member also includes a hollow reflection part with a curved surface that adjusts the incidence angle of light to prevent dark areas. Additionally, the indicator member includes a notch that reflects light towards the upper face of the pointing part, increasing the amount of light exiting from the indicator. The invention also includes a reflection part for the indicator shaft that guides light from the indicator shaft towards the pointing part, reducing light leakage and improving lighting quality. Overall, the invention provides a cost-effective solution for improving the brightness and lighting quality of indicators.

Problems solved by technology

However, there is a problem that, when the light diffusing component and the filter member and such are provided to prevent the formation of the dark area D at the section R of the upper face 953 of the indicator part 950 located above the hollow reflection part 960 as described above, the number of components is increased and the man-hour for assembling is increased as well, causing an increase in the manufacturing cost of the indicator member.

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