Luminous multiple glazing unit comprising light-emitting diodes

Patent metadata

Field	Value
Publication number	US-9453361-B2
Application number	US-201113576506-A
Country	US
Kind code	B2
Filing date	Jan 24, 2011
Priority date	Feb 1, 2010
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

A luminous multiple glazing unit including: first and second flat glass elements; light-emitting diodes located in an internal space; a reflector including a part fixed to the glazing unit in the internal space; and a first luminous zone associated with the first glass element. In a first configuration, the reflector has a central reflective area for reflecting at least 30% of total flux emitted by the diodes in the group onto a first mechanism scattering light, or, in a second configuration, the reflector forms a beam splitter and has a double-image central reflective area of a first central area for reflecting first central rays onto a first mechanism scattering light and a second central area for reflecting second central rays onto a second scattering mechanism, the reflector reflecting at least 30% of total flux emitted by the diodes in the group.

First claim

The invention claimed is:

1. A luminous multiple glazing unit comprising:
a first flat glass element made of mineral or organic glass, with first and second main faces;
a second flat glass element made of mineral or organic glass, with a main face, as a third face, lying opposite the first face, and another main face as a fourth face, the first and second glass elements being securely fastened to and spaced apart from each other;
an internal space, at least between the first and third faces, the internal space being evacuated or filled with a gas;
a spacer separating the first and second glass elements, at a periphery of the glazing unit;
at least one group of light-emitting diodes located in the internal space, the diodes being mounted on one or more mountings, the diodes in the group each having a given main emission direction that is substantially parallel to the first face;
a reflector that reflects the light emitted by the group of diodes, the reflector comprising a part fixed to the glazing unit by a first planar lateral part fixed to the first face and a second planar lateral part fixed to the third face; and
a first luminous zone associated with the first glass element;
wherein the part of the reflector forms a beam splitter haying a double-image central reflective area of:
a first central area, at an oblique angle to the first face, able to reflect first central rays from the group of diodes onto the first luminous zone, the first luminous zone including a first means for scattering the light, which means receives the first central rays; and
a second central area, at an oblique angle to the third face, able to reflect second central rays from the group of diodes onto a second luminous zone associated with the second glass element, the second luminous zone including a second means for scattering light, which means receives the second central rays,
the first and second central areas being substantially contiguous, the first and second central rays including the main emission direction and forming at least 30% of the total flux from the diodes in the group, and

wherein the first planar lateral part is masked by the first means for scattering the light and the second planar lateral part is masked by the second means for scattering the light.

2. The luminous multiple glazing unit as claimed in claim 1 , wherein at least one of the first glass element and the second. glass element includes at least one dim zone, and the dim zone is chosen from a reflective zone forming a mirror, a transparent zone, a translucent zone obtained by texturing the first glass element, or a decorative zone.

3. The luminous multiple glazing unit as claimed in claim 1 , wherein the reflector comprises:
a first zone bounding reflection of the emitted rays making an angle α 1 to the main emission direction, the first scattering means extending such that at least 80% of the lateral rays exceeding the angle α 1 , and emitted toward the first face, are scattered by the first scattering means; and
a second zone bounding reflection of the emitted rays making an angle α 2 to the main emission direction, the second scattering means extending such that at least 80% of the lateral rays making an angle greater than α 2 and emitted toward the third face are scattered by the second scattering means.

4. The luminous multiple glazing unit as claimed in claim 1 , wherein the first scattering means is associated with the first face and the second scattering means is associated with the third face, and the second scattering means is formed by texturing the surface of the second glass element.

5. The luminous multiple glazing unit as claimed in claim 1 , wherein, for the group of diodes, a full width at half-maximum is at least 50°.

6. The luminous multiple glazing unit as claimed in claim 1 , wherein the mounting is securely fastened to the peripheral spacer, the first luminous zone extending along an edge of the first face and the second luminous zone extending along an edge of the third face.

7. The luminous multiple glazing unit as claimed in claim 1 , wherein the mounting is made of metal and fixed to the spacer that is made of metal.

8. The luminous multiple glazing unit as claimed in claim 1 , wherein the first central area makes an acute angle of 20° to 60° to the first face, and the second central area makes an acute angle of 20° to 60° to the third face.

9. The luminous multiple glazing unit as claimed in claim 1 , wherein the first central area makes an acute angle of 20° to 60° to the first face and the second central area, having a different or distinct obliquity to the first central area, makes an acute angle of 20° to 60° to the third face.

10. The luminous multiple glazing unit as claimed in claim 1 , wherein the spacer forms a frame that contains a desiccant.

11. The luminous multiple glazing unit as claimed in claim 1 , wherein the glazing unit produces decorative illumination, architectural illumination, or illumination for signs or displays.

12. The luminous multiple glazing unit as claimed in claim 1 , wherein the reflector includes an M-shaped transverse cross section in a zone shifted from the first luminous zone.

13. A luminous multiple glazing unit, comprising:
a first flat glass element made of mineral or organic glass, with first and second main faces;
a second flat glass element made of mineral or organic glass, with a lain face, as a third face, lying opposite the first face, and another main face as a fourth face, the first and second glass elements being securely fastened to and spaced apart from each other;
an internal space, at least between the first and third faces, the internal space being evacuated or filled with a gas;
a spacer separating the first and second glass elements, at a periphery of the glazing unit;
at least one group of light-emitting diodes located in the internal space, the diodes being mounted on one or more mountings, the diodes in the group each having a given main emission direction that is substantially parallel to the first face;
a reflector that reflects the light emitted by the group of diodes, the reflector comprising a part fixed to the glazing unit in the internal space; and
a first luminous zone associated with the first glass element;
wherein the part of the reflector has a central reflective area that makes an oblique angle to the first face, this reflective area being able to reflect, in a first position, central rays of the group of diodes, including the main emission direction, and forming at least 30% of total flux emitted by the diodes in the group, the central rays being reflected onto the first luminous zone, the first luminous zone including a first means for scattering light that receives the central rays,
wherein the reflector is configured to move from the first position to an inactive position when the group of diodes are turned off, the inactive position being substantially perpendicular to the first face, and
wherein a vertical projection onto the first face and a vertical projection onto the third face of at least the central area are both 3 mm or less when the central area is able to move into the inactive position.

14. The luminous multiple glazing unit as claimed in claim 13 , wherein the reflector extends until there is a maximum play between the first face and the reflector of less than 5 mm.

15. A luminous multiple glazing unit, comprising:
a first flat glass element lade of mineral or organic glass, with first and second main faces;
a second flat glass element made of mineral or organic glass, with a main face, as a third face, lying opposite the

Assignees

• Montgermont Aude
• Zhang Jingwei
• Delhorme David
• Saint Gobain

Inventors

• Montgermont Aude
• Zhang Jingwei
• Delhorme David

Classifications

• E06B3/66 Primary

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