Light with a transparent panel

• US 7,093,955 B2
• Filed: 05/29/2003
• Issued: 08/22/2006
• Est. Priority Date: 11/29/2000
• Status: Expired due to Fees

• Current Assignee: Zumtobel Staff GmbH
• Original Assignee: Zumtobel Staff GmbH
• Inventors: Sejkora, Günther, Bohle, Markus
• Primary Examiner(s): Tso, Laura K.
• Application Number:
  US10/446,738
• Publication Number:
  US 20040012981A1
• Time in Patent Office: 1,181 Days
• Field of Search: 362/217, 362/222, 362/223, 362/311, 362/367
• US Class Current: 362/223
• CPC Class Codes: E04B 9/26 by means of snap action of elastically deformable elements held against the underside of the supporting construction
• CPC Class Codes: E04B 9/32 Translucent ceilings, i.e. permitting both the transmission and diffusion of light E04B9/303 and E04B9/34 takes precedence; lighting F21
• CPC Class Codes: F21S 8/02 of recess-mounted type, e.g. downlighters specially adapted for vehicle exteriors F21S41/00-F21S45/00
• CPC Class Codes: F21V 17/105 using magnets
• CPC Class Codes: F21V 17/12 by screwing
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 21/02 Wall, ceiling, or floor bases; Fixing pendants or arms to the bases F21V21/08 takes precedence; bases for movable standing lamps F21V21/06
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21V 5/002 using microoptical elements for redirecting or diffusing light
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 7/04 Optical design
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes
• CPC Class Codes: F21Y 2113/00 Combination of light sources

Abstract

The invention relates to a light comprising a light source or connection means for a light source, and a transparent panel which extends crosswise to a direction of light emission. An object of the invention is to improve the light in terms of glare suppression. To this end, the transparent panel is provided with a microstructure and light homogenization means are provided. The latter ensure that the brightness of the light entering the panel is approximately equal in all parts of the panel.

Claims

1. A light, comprising:

a light source or connection means therefor;

a transparent panel extending transversely to a direction of light emission, provided with a microstructure shaped to direct light in a single direction; and

a reflector that comprises reflecting surfaces,

wherein light homogenization means are provided that ensure that a light intensity of light entering the transparent panel is roughly equal in all parts of the transparent panel, and wherein the light homogenization means are formed by an opal inner panel or an opal inner film arranged between the light source and the transparent panel and resting in an inside on or against the transparent panel, and wherein the light homogenization means are furthermore formed by a covering or layer or a grid, wherein the grid is reflecting or partially reflecting.

2. A light according to claim 1, wherein the inner panel or the film has a varying light transmission depending on a distance to the light source.

3. A light according to claim 1, wherein the grid or the covering or the layer is imprinted by silk screen printing or ink printing.

4. A light according to claim 1, wherein the light homogenization means are furthermore formed by at least one of a corresponding shaping of the reflecting surface and a different degree of reflection at different parts of the reflecting surface.

5. A light according to claim 4, wherein a scattering structure of the reflecting surface is formed by grooves or grids.

6. A light according to claim 1, wherein a base member and the transparent panel coincide only at an edge of the transparent panel and form a free space within the edge, which permits a direct transmission of light from the light source up to the edge of the transparent panel.

7. A light according to claim 6, wherein an edge surface of an edge region opposite the transparent panel extends in a converging, inclined manner up to the edge of the transparent panel.

8. A light according to claim 7, wherein a wall of a reflector ends at an inner edge of the edge region, at least one reflecting surface of the reflector being substantially aligned with the surface of the edge region facing the transparent panel.

9. A light according to claim 7, wherein the edge region is formed by an edge arm that originates at an obtuse angle from a side wall arm of the base member.

10. A light comprising:

a light source or connection means therefor;

a reflector;

a first transparent panel extending transversely to a direction of light emission, which forms a first light emission zone; and

a second transparent panel arranged divergently with respect to said first transparent panel,

wherein said first and second panels extend from a common corner region.

11. A light according to claim 10, wherein the second, further transparent panel is arranged on one side of the light and is connected in a U-shaped or V-shaped manner in one piece with the first transparent panel.

16. A light according to claim 10, wherein the first, transparent panel comprises a microstructure, in particular a microprism structure, on its outside or inside, or a panel which comprises a microstructure, in particular a microprism structure, on its outside or inside is arranged interiorly or exteriorly of the first, transparent panel.

12. A light comprising:

a light source or connection means therefor;

a reflector; and

a first transparent panel extending transversely to a direction of light emission, which forms a first light emission zone wherein a region of the reflector comprises a second, further transparent panel that forms a further light emission zone,

wherein the reflector extends in a flat dome-shaped manner, from an edge region facing it of the second, further transparent panel to a latter oppositely facing side edge region of the first, transparent panel.

13. A light according to claim 12, wherein a base carrier is provided for the panels, which extends substantially at least over the reflector.

14. A light according to claim 13, wherein the base carrier comprises plug-in sockets for holding the panels.

15. A light according to claim 14, wherein the plug-in sockets are formed by elements of U-shaped cross-section into which the panels can be inserted and in which the panels are secured, by a clamping pressure of arms of elements overlapping the panels.

17. A light comprising a light source or connection means therefor, and a transparent panel extending transversely to a direction of light emission, wherein the light is employed in a fork-like holder that is suitable for securement to a wall or ceiling.

18. A light according to claim 17, wherein the fork-like holder is formed by a holder base with holder arms protruding therefrom.

19. A light according to claim 18, wherein free space between the holder arms corresponds substantially to a size and shape of the light.

20. A light according to claim 18, wherein inwardly protruding carrying elements for the light are arranged on inner lower edges of the holder arms, which are formed by strips extending along edges.