LUMINOUS DISPLAY HAND FOR A PORTABLE OBJECT SUCH AS A WATCH OR A MEASURING INSTRUMENT

• US 20150346690A1
• Filed: 04/16/2015
• Published: 12/03/2015
• Est. Priority Date: 05/27/2014
• Status: Active Grant

• Current Assignee: The Swatch Group Research And Development Ltd
• Original Assignee: The Swatch Group Research And Development Ltd
• Inventors: Tortora, Pierpasquale
• Granted Patent: US 9,501,038 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21V 33/0004 Personal or domestic articles
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/009 of the light source in the package G02B6/0021 takes precedence
• CPC Class Codes: G04B 19/305 the hands carrying the light source hands and manufacture thereof G04B19/042; projection of hands or dials G04B19/34; illumination of scales and/or hands on moving scales H03J1/02; on compasses G01C17/24; on weighing apparatus G01G23/18; on measuring instruments G01D11/28

Abstract

Luminous display hand for a portable object, the portable object including a frame which houses an electrical energy supply source, the hand including a light guide in which is arranged a hole for the passage of a drive arbor, and a housing for accommodating a light source which injects light into the light guide, the light source including first and second poles, the first pole of the light source being connected to the energy supply source via the drive arbor of the hand and the second pole of the light source being connected to the energy supply source via the frame of the portable object.

Claims

1. A luminous display hand for a portable object, wherein the portable object includes a frame which houses an electrical energy supply source, wherein the hand includes a light guide in which is arranged a hole for the passage of a drive arbour, and a housing for accommodating a light source that injects light into the light guide, wherein the light source includes first and second poles, wherein the first pole of the light source is connected to the energy supply source via the drive arbour of the hand, and wherein the second pole of the light source is connected to the energy supply source via the frame of the portable object.

2. The luminous display hand according to claim 1, wherein the second pole of the light source is connected to the frame of the portable object via an electrically conductive support piece that carries the light source.

3. The luminous display hand according to claim 2, wherein the electrical connection between the support piece and the frame of the portable object occurs by friction.

4. The luminous display hand according to claim 2, wherein the light guide includes a first surface portion facing an observer, and a second surface portion opposite the first surface portion, wherein an electrically conductive external part, that electrically connects the light source to the drive arbour, is arranged on the first surface portion of the light guide.

5. The luminous display hand according to claim 3, wherein the light guide includes a first surface portion facing an observer, and a second surface portion opposite the first surface portion, wherein an electrically conductive external part, that electrically connects the light source to the drive arbour, is arranged on the first surface portion of the light guide.

6. The luminous display hand according to claim 4, wherein the support piece is fixed to the second surface portion of the light guide.

7. The luminous display hand according to claim 5, wherein the support piece is fixed to the second surface portion of the light guide.

8. The luminous display hand according to claim 1, wherein the second pole of the light source is connected to ground.