US 5,706,757 A · Indicating instrument

Abstract

The present invention is to provide an indicating instrument useful to a speedometer for a vehicle. An internal driving unit (2) is secured to a printed circuit board (1), and a cylindrical rotating shaft (6) is carried by bearings (4, 5) of the internal driving unit (2). A pointer (9) is secured to the rotating shaft (6) and rotated via the rotating shaft (6) by the internal driving unit (2). A light emitting diode (12) is disposed inside the rotating shaft (6) and secured to the printed circuit board (1). Light emitted by the light emitting diode is collected by a light collecting portion (9a) of the pointer (9), reflected by a reflecting portion (9b) and illuminates the pointer (9).

Claims6

Dependent claims

An indicating instrument comprising:

an internal driving unit including a stationary base member and a bearing, said bearing being secured to said base member;
a rotating shaft having one end carried by said bearing and rotated by said internal driving unit;
a pointer having a high conductivity of light and being connected to the other end of said rotating shaft;
and
a light source for illuminating said pointer, wherein said bearing has an accommodation space formed at the center thereof and extending from said base member to at least said one end of said rotating shaft so that said light source is disposed in said accommodation space and secured to said base member.

2 more elements

Dependencies are inferred from the claim text.

Indicating instrument

Life of this patent

Indicating instrument

Life of this patent

Abstract

Claims6