Luminaire comprising elongate light source and light-influencing element

• US 8,025,426 B2
• Filed: 02/16/2006
• Issued: 09/27/2011
• Est. Priority Date: 02/17/2005
• Status: Expired due to Fees

• Current Assignee: Zumtobel Lighting GmbH (Zumtobel Group AG)
• Original Assignee: Zumtobel Lighting GmbH (Zumtobel Group AG)
• Inventors: Ladstätter, Gerald, Mündle, Anton
• Primary Examiner(s): Lee; Diane
• Assistant Examiner(s): CARTER, WILLIAM JOSEPH
• Application Number:
  US11/816,193
• Publication Number:
  US 20080273321A1
• Time in Patent Office: 2,049 Days
• Field of Search: 362/281, 362/283, 362/306
• US Class Current: 362/281
• CPC Class Codes: F21V 14/04 by movement of reflectors in vehicle head lamps F21S41/675
• CPC Class Codes: F21V 14/08 by movement of the screens or filters
• CPC Class Codes: F21V 17/02 with provision for adjustment F21V17/04 - F21V17/08 take precedence
• CPC Class Codes: F21V 17/04 the fastening being onto or by the light source
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes

Abstract

Disclosed is a light (1) comprising means (3a) for retaining and electrically connecting at least one elongate light source (2) and a light-influencing element (10) which is located next to the light source (2) and is composed of several individual elements (15). Said elements (15) that form the light-influencing element (10) can be swiveled or rotated independently of each other about an axis that extends substantially parallel to the longitudinal axis of the light source (2).

Claims

1. A luminaire comprising at least one elongate light source (2), and a light-influencing element (10) which is disposed proximate the light source (2) and comprises a plurality of individual elements (15), wherein the individual elements (15) are snapped or slipped mounted onto a cylindrical, translucent mounting part (5), which surrounds the light source (2) and is positioned at a distance from the light source (2), wherein the mounting part (5) has a cylindrical outer surface, and wherein the individual elements (15) are capable of being pivoted or rotated, independently of each other, around the cylindrical, translucent mounting part (5) and about an axis substantially parallel to a longitudinal axis of the light source (2), wherein cooperating arresting elements (6, 19), for defining preferred positions for the light-influencing element (10), are disposed on the mounting part (5) and on the individual elements (15).

2. The luminaire according to claim 1, wherein a pivot axis or rotary axis for the individual elements (15) coincides substantially with the longitudinal axis of the light source (2) or is displaced relative to said longitudinal axis of the light source (2).

3. The luminaire according to claim 1, wherein the mounting part (5) is constituted by a transparent plastic tube.

4. The luminaire according to claim 1, wherein the mounting part (5) is polygonal in cross-section.

5. The luminaire according to claim 1, wherein the mounting part (5) is rotatably attached to the luminaire (1).

6. The luminaire according to claim 1, wherein the light-influencing element (10) is constituted by a matrix arrangement (10).

7. The luminaire according to claim 6, wherein the individual elements (15) are arranged in the matrix arrangement (10), wherein each individual element (15) comprises a back reflector (17) which faces towards the light source and which has a through-aperture (17a) adjoined by a pot reflector (16).

8. The luminaire according to claim 7, wherein the pot reflector (16) has a circular light output aperture (18).

9. A luminaire (1) comprising at least one elongate light source (2), and comprising a light-influencing element (10) which is disposed proximate the light source (2) and which is capable of being pivoted or rotated about an axis running substantially parallel to a longitudinal axis of the light source (2), wherein the light-influencing element (10) is snapped or slipped onto a cylindrical mounting part (5), which is translucent and surrounds the light source (2) at a distance, so as to be pivotally or rotatably disposed thereon, wherein the mounting part (5) has a cylindrical outer surface and wherein cooperating arresting elements (6, 19), for defining preferred positions for the light-influencing element (10), are disposed on the mounting part (5) and on the light-influencing element (10).

10. The luminaire according to claim 9, wherein the mounting part (5) is constituted by a transparent plastic tube.

11. The luminaire according to claim 9, wherein the mounting part (5) is polygonal in cross-section.