Deterrent device attachment having light source with thermal management
Deterrent device attachments are provided each having a light emitting thermal source positioned by a support board to emit light from within a housing of the deterrent device, with the support board bent to provide surface areas to dissipate heat generated by the light emitter.
1. A deterrent device attachment comprising:
a housing having an open area defined by area walls and an end wall having a segment through which light can pass;
a support board having a metal layer with a first bend between a first end portion and a support portion;
a light source that generates light and heat when energized is positioned in the support portion;
a drive circuit adapted to controllably energize the light source; and,
a drive board positioned orthogonal to and above the light source board wherein the drive circuit is provided on the drive board;
wherein the support board is positioned at least in part between at least two of the area walls with the support portion arranged to direct light generated by the light source toward the opening and with the first end portion extending away from the segment at least in part in a direction along one of the area walls with the metal layer providing a first boundary free area along which the heat can spread from the light source and be dissipated.
2. The deterrent device attachment of claim 1 , wherein a second bend is positioned between the support portion and a second end portion and the second end portion extends from the opening at least in part in a direction along an area side wall with the metal layer providing a second boundary free area along which the heat can spread from the light source and be dissipated.
3. The deterrent device attachment of claim 1 , wherein the metal layer has a thickness of between 0.3 and 2.5 millimeters.
4. The deterrent device attachment of claim 1 , wherein the light source comprises at least one of a laser gain medium, a light emitting diode, a laser diode and quantum dot light emitter.
5. The deterrent device attachment of claim 1 , wherein the support board comprises a metal layer, an insulator on the metal layer, a conductor layer having electrical paths on the insulator extending from the light source to contacts through which energy can be supplied to energize the light source.
6. The deterrent device attachment of claim 1 , wherein the support board is shaped so that the first end portion and the second end portion are positioned at predetermined lengths along opposing ones of the area walls.
7. The deterrent device attachment of claim 5 , wherein the support board is shaped so that the first end portion and the second end portion contact predetermined lengths of the area walls apart from an optical element to reduce the risk that thermal expansion of the area walls will move the optical element outside of a desirable range of lengths from the light source.
8. The deterrent device attachment of claim 1 , wherein the metal layer has a thicker area proximate to the light source than in at least one of the first end portion and the second end portion.
9. The deterrent device attachment of claim 1 , wherein the first end portion and the second end portion extend at least in part through openings in the area walls to provide a barrier free path for heat to flow from support portion to areas outside of the open area.
10. The deterrent device attachment of claim 8 , wherein at least one of the first end portion and the second end portion has surface relief features to increase extent to which heat can dissipate from the metal layer into the areas outside of the open area.
11. The deterrent device attachment of claim 8 , wherein the support board is scored on a second side to facilitate fabricating at least one of the first bend and the second bend.
12. The deterrent device attachment of claim 1 , wherein the support board is formed through an extrusion process.
13. A deterrent device attachment comprising:
a housing having an open area defined by area walls and an end wall having a segment through which light can pass;
a support board having a metal layer with a first bend between a first end portion and a support portion;
a light source that generates light and heat when energized is positioned in the support portion;
a drive circuit adapted to controllably energize the light source; and,
a drive board positioned orthogonal to and above the light source board wherein the drive circuit is provided on the drive board;
wherein the support board is positioned at least in part between at least two of the area walls with the support portion arranged to direct light generated by the light source toward the opening and with the first end portion extending away from the segment at least in part in a direction along one of the area walls with the metal layer providing a first boundary free area along which the heat can spread from the light source and be dissipated and wherein the drive board has an opening to receive a tab portion of the support board having electrical paths thereon that are adapted to allow energy to flow from the drive circuit to the light source and wherein the drive circuit has terminals positioned proximate to the contacts when the tab portion of the support board is positioned in the opening.
14. The deterrent device attachment of claim 13 , wherein a second bend is positioned between the support portion and a second end portion and the second end portion extends from the opening at least in part in a direction along an area side wall with the metal layer providing a second boundary free area along which the heat can spread from the light source and be dissipated.
15. The deterrent device attachment of claim 13 , wherein the metal layer has a thickness of between 0.3 and 2.5 millimeters.
16. The deterrent device attachment of claim 13 , wherein the light source comprises at least one of a laser gain medium, a light emitting diode, a laser diode and quantum dot light emitter.
17. The deterrent device attachment of claim 13 , wherein the support board comprises a metal layer, an insulator on the metal layer, a conductor layer having electrical paths on the insulator extending from the light source to contacts through which energy can be supplied to energize the light source.
18. The deterrent device attachment of 13 , wherein the support board is shaped so that the first end portion and the second end portion are positioned at predetermined lengths along opposing ones of the area walls.
19. The deterrent device attachment of claim 17 , wherein the support board is shaped so that the first end portion and the second end portion contact predetermined lengths of the area walls apart from an optical element to reduce the risk that thermal expansion of the area walls will move the optical element outside of a desirable range of lengths from the light source.
20. The deterrent device attachment of claim 13 , wherein the metal layer has a thicker area proximate to the light source than in at least one of the first end portion and the second end portion.
21. The deterrent device attachment of claim 19 , wherein the first end portion and the second end portion extend at least in part through openings in the area walls to provide a barrier free path for heat to flow from support portion to areas outside of the open area.
22. The deterrent device attachment of claim 19 , wherein at least one of the first end portion and the second end portion has surface relief features to increase an extent to which heat can dissipate from the metal layer into the areas outside of the open area.
23. The deterrent device attachment of claim 19 , wherein the support board is scored on a second side to facilitate fabricating at least one of the first bend and the second bend.
24. The deterrent device attachment of claim 13 , wherein the support board is formed through an extrusion process.