Emergency lighting fixture, especially for industrial environments

• US 6,142,649 A
• Filed: 03/06/1998
• Issued: 11/07/2000
• Est. Priority Date: 06/02/1997
• Status: Expired due to Fees

• Current Assignee: Beghelli S.P.A.
• Original Assignee: Beghelli S.P.A.
• Inventors: Beghelli, Gian Pietro
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): Sawhney, Hargobind S.
• Application Number:
  US09/036,017
• Time in Patent Office: 977 Days
• Field of Search: 362/259, 362/228, 362/231, 362/233, 362/363, 362/542, 362/157, 362/486, 315/33, 315/86, 313/1, 340/557, 340/321, 340/331
• US Class Current: 362/259
• CPC Class Codes: F21S 9/022 Emergency lighting devices
• CPC Class Codes: F21V 17/02 with provision for adjustment F21V17/04 - F21V17/08 take precedence
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21Y 2113/20 of different form
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/30 Semiconductor lasers
• CPC Class Codes: G08B 7/062 indicating emergency exits
• CPC Class Codes: G08B 7/066 guiding along a path, e.g. evacuation path lighting strip

Abstract

An emergency lighting fixture, particularly suited for industrial environments, includes a central body, at least one source of light constituted by an incandescent halogen lamp held inside a parabolic reflector and a transparent shell covering the fixture'"'"'s central body. The reflector is adjustable by an operator from outside the emergency lighting fixture, after lifting the transparent shell, so as to regulate the direction of the light beam. Each reflector is further associated with a laser light source, capable of providing an emergency lighting system, for instance in the presence of smoke in the surrounding environment as detected by a smoke sensor. A regulating device of the laser light beam includes a ring nut swiveling in a horizontal plane and a plate for vertical adjustments, so as to make it possible to position the laser beam within pre-established angles.

Claims

1. An emergency lighting fixture, comprising:

a central body of an elongated shape;

a transparent cover shell functioning as a diffusing shield for visible electromagnetic rays emitted by at least one light source fitted inside at least one parabolic reflector placed in said central body inside said transparent cover shell, wherein said light source includes at least one laser source; and

a smoke sensing device, wherein emission by said at least one laser source is controlled by an output of said smoke sensing device.

2. A fixture according to claim 1, wherein said smoke sensing device is positioned within said emergency lighting fixture.

3. A fixture according to claim 1, wherein said at least one parabolic reflector is configured to be manually swivelled.

4. A fixture according to claim 3, wherein said at least one parabolic reflector is configured to be swivelled by acting on at least one knob by a transmission system attached to a supporting structure of the parabolic reflector on the central body.

5. A fixture according to claim 1, wherein said at least one light source includes two light sources each fitted in a parabolic reflector and each constituted by a halogen lamp of an incandescent type and a laser source.

6. A fixture according to claim 1, wherein said at least one laser source is constituted by a laser diode.

7. A fixture according to claim 1, wherein said at least one parabolic reflector include two parabolic reflectors.

8. A fixture according to claim 1, wherein said at least one parabolic reflector has at least one hole configured to pass the visible electromagnetic radiation emitted by said at least one light source.

9. A fixture according to claim 1, wherein said at least one laser source is inserted inside at least one container attached to said at least one parabolic reflector.

10. A fixture according to claim 9, wherein an inside of said container holds at least one of electrical and electronic circuits for conditioning and transmitting an electrical signal to said at least one laser source.

11. A fixture according to claim 1, wherein an inside of said central body holds electrical signal feeding and conditioning circuits, including at least one terminal block, a multiple number of transistors, at least two electrical transformers, and at least two electrical energy accumulator batteries.

12. A fixture according to claim 1, further comprising at least one structure configured to emit a laser beam from said at least one laser source through at least one opening in said at least one structure, on the part of said at least one laser source, of at least one means for adjusting at least one direction of said laser beam according to at least one of a first plane parallel to a surface on which said at least one structure is installed for emergency lighting and a further plane perpendicular to said first plane so that directions reached by said laser beam form, with at least one pre-established reference direction, an angle within a predetermined angular range.

13. A fixture according to claim 12, wherein said angle can be adjusted by using at least one needle indicator.

14. A fixture according to claim 12, further comprising:

at least one ring nut configured to be rotated to adjust the direction of said laser beam in accordance with the said first plane, whereby said first plane is constituted by a horizontal plane parallel to a surface on which said emergency lighting fixture is installed; and

at least one plate configured to regulate the direction of the laser beam according to a vertical plane perpendicular to said horizontal plane, in such a manner that the directions reached by the said laser beam on said horizontal plane form, with at least one predetermined reference direction, an angle within an angular range of +15/-15 degrees, inclusive.

15. A fixture according to claim 14, wherein said directions of the laser beam reachable according to said vertical plane form, with at least one pre-established reference direction, an angle included within an angular range of 0/+15 degrees, inclusive.

16. A fixture according to claim 15, wherein at least one of said horizontal plane and said vertical plane comprise said at least one laser source.

17. A fixture according to claim 14, wherein said at least one ring nut forms a single piece with at least one attachment in contact with at least one pin provided on said at least one structure for emission of the laser beam.

18. A fixture according to claim 14, wherein said at least one plate is connected with at least one pin carrying a peg engaging with an eyelet, arranged opposite one of extreme ends of said at least one structure for emission of the laser beam.

19. A fixture according to claim 14, wherein said at least one ring nut and said at least one plate are connected to each other by at least one supporting screw, which blocks its movement if completely turned in.

20. A fixture according to claim 19, wherein said screw has a hexagonal cavity and is configured to facilitate assembly of said at least one ring nut with said at least one plate.

21. A fixture according to claim 1, wherein the emergency lighting fixture is embedded in flush-mounted boxes for electrical installations.

22. A fixture according to claim 21, wherein the flush-mounted boxes include one of three and six compartments.

23. A fixture according to claim 1, wherein emission of a laser beam from said at least one laser source occurs at a command of at least one signaling unit contained inside a flush-mounted box including one of three and six compartments.

24. An emergency lighting fixture, comprising:

a central body of an elongated shape;

a transparent cover shell functioning as a diffusing shield for visible electromagnetic rays emitted by at least one light source fitted inside at least one parabolic reflector placed in said central body inside said transparent cover shell, wherein said light source includes at least one laser source; and

wherein said at least one parabolic reflector is configured to be manually swivelled by acting on at least one knob by a transmission system attached to a supporting structure of the parabolic reflector on the central body.

25. An emergency lighting fixture, comprising:

a central body of an elongated shape;

a transparent cover shell functioning as a diffusing shield for visible electromagnetic rays emitted by at least one light source fitted inside at least one parabolic reflector placed in said central body inside said transparent cover shell, wherein said light source includes at least one laser source; and

wherein an inside of said central body holds electrical signal feeding and conditioning circuits, including at least one terminal block, a multiple number of transistors, at least two electrical transformers, and at least two electrical energy accumulator batteries.

26. An emergency lighting fixture, comprising:

a central body of an elongated shape;

a transparent cover shell functioning as a diffusing shield for visible electromagnetic rays emitted by at least one light source fitted inside at least one parabolic reflector placed in said central body inside said transparent cover shell, wherein said light source includes at least one laser source; and

wherein said at least one laser source is inserted inside at least one container attached to said at least one parabolic reflector, and wherein an inside of said container holds at least one of electrical and electronic circuits for conditioning and transmitting an electrical signal to said at least one laser source.

27. An emergency lighting fixture, comprising:

a central body of an elongated shape;

a transparent cover shell functioning as a diffusing shield for visible electromagnetic rays emitted by at least one light source fitted inside at least one parabolic reflector placed in said central body inside said transparent cover shell, wherein said light source includes at least one laser source; and

at least one structure configured to emit a laser beam from said at least one laser source through at least one opening in said at least one structure, on the part of said at least one laser source, of at least one means for adjusting at least one direction of said laser beam according to at least one of a first plane parallel to a surface on which said at least one structure is installed for emergency lighting and a further plane perpendicular to said first plane so that directions reached by said laser beam form, with at least one predetermined reference direction, an angle within a predetermined angular range.

28. An emergency lighting fixture, comprising:

a central body of an elongated shape;

a transparent cover shell functioning as a diffusing shield for visible electromagnetic rays emitted by at least one light source fitted inside at least one parabolic reflector placed in said central body inside said transparent cover shell, wherein said light source includes at least one laser source; and

wherein the emergency lighting fixture is embedded in flush-mounted boxes for electrical installations.