Illuminated slit pointer device for vehicle instrument

• US 5,320,062 A
• Filed: 12/09/1992
• Issued: 06/14/1994
• Est. Priority Date: 12/11/1991
• Status: Expired due to Term

• Current Assignee: Yazaki Corporation
• Original Assignee: Yazaki Corporation
• Inventors: Masuda, Michihisa, Iino, Tadashi, Aoki, Kunimitsu
• Primary Examiner(s): CUCHLINSKI JR, WILLIAM A
• Application Number:
  US07/987,812
• Time in Patent Office: 552 Days
• Field of Search: 116/202, 116/48, 116/49, 116/286, 40/479, 362/343, 362/28, 362/29, 359/534, 359/529
• US Class Current: 116/48
• CPC Class Codes: B60K 2360/6992 Light conducting pointers
• CPC Class Codes: B60K 35/00 Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• CPC Class Codes: B60Q 3/14 lighting through the surface to be illuminated
• CPC Class Codes: G01D 11/28 Structurally-combined illuminating devices
• CPC Class Codes: G01D 13/265 Pointers which conduct light

Abstract

A pointer for use in an instrument panel, such as a speedometer, in a vehicle. According to one embodiment, the pointer includes a conically shaped pointer body to which a pointer base is secured. A light source is disposed within the pointer base and a slit is provided in the body. The inner surface of the pointer body is reflective such that light directed from the light source is reflected off of the reflective surface and through the slit. In another embodiment the light source is disposed externally of the pointer and a reflecting member is provided in the pointer for reflecting the light towards the distal end of the conical body. The reflecting member can include a reflecting mirror or, alternatively, a prism.

Claims

1. A pointer device for an instrument panel of a vehicle, comprising:

a movement;

a rotary shaft protruding from said movement;

a pointer attachable to said rotary shaft so as to be rotatable therewith; and

a light source for radiating light into said pointer, wherein said pointer includes;

a hollow conical body portion and a base portion which is secured to said rotary shaft, wherein said body portion has a longitudinally extending slit in the side thereof and a reflective inner surface such that light emitted by said light source and directed into said body portion is reflected off said reflecting surface and through said slit.

2. The pointer device of claim 1, wherein said body portion of said pointer has a circular cross-section.

3. The pointer device of claim 2, wherein said pointer extends in a direction which is perpendicular to said rotary shaft.

4. The pointer device of claim 2, wherein said light source emits light rays in a direction which is parallel to said slit.

5. The pointer device of claim 1, wherein said light source is disposed within said base portion and oriented so as to direct said light toward a distal end of said body portion.