INTEGRAL CONDUIT MODULAR LIGHTING

Abstract

An integral conduit modular lighting system that has a light board having circuitry that is secured to a heat sink with an adhesive layer. The heat sink has a gasket in order to securely connect the lighting system to a preexisting conduit body such that the lighting system withstand a high pressure wash without leakage to the board. The heat sink also has opening that mate with openings of preexisting electrical conduit bodies to provide installation of the modular lighting system to existing electrical conduit bodies.

Claims

1. A device for illumination, comprising: a conduit body; a light board including electrical circuitry on a substrate with a first side and a second side defining opposing planar surfaces; a light engine module comprising an array of light sources arranged on the first side of the substrate with driving circuitry that supplies electrical excitation to the array of light sources; said second side engaging an adhesive layer to secure the light engine module to a heat sink; a lens module having an interior lens surface engaged and secured to the adhesive layer to provide a water tight seal to prevent the entry of water onto the electrical circuitry.

2. The device of claim 1 further comprising at least one mounting hole for securely mounting the light engine module in a fixed position relative to the conduit body.

3. The device of claim 1, wherein the conduit body comprises an industry standard electrical junction box.

4. The device of claim 1 further comprising a gasket secured to the heat sink.

5. The device of claim 4 wherein when the light engine module is securely mounted to the conduit body the gasket engages the conduit body to prevent water from entering the conduit body.

6. The device of claim 1, wherein the electrical excitation signals comprise an alternating current (AC) signal.

7. The device of claim 1 wherein the array of light sources are light emitting diodes.

8. The device of claim 1 wherein the substrate is a printed circuit board.

9. A method of installing a device for illumination in a chicken coop installation to prevent the flow of water within the device, steps comprising: providing an electrical conduit connected to corresponding ports of an integral light module having a conduit body; said integral light engine module further comprising an array of light sources arranged on a substrate having a first side and a second side defining opposing planar surfaces; adhering the substrate to a heat sink with an adhesive layer; securing a lens to the heat sink against the adhesive layer to seal the substrate from water; and mounting the heat sink to the conduit body to prevent water from entering the conduit body.

10. The method of claim 9 further comprising the step of securing a gasket to a side of the heat sink opposite the substrate.

11. The method of claim 10 further comprising the step of pressing the gasket against the conduit body to provide a water tight seal.

12. The method of claim 11 wherein the gasket is made of a flexible material that deforms when the gasket is pressed against the conduit body.

13. The method of claim 11 wherein the array of light sources are light emitting diodes.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 is a perspective view of an illustrative free range-style chicken coop installation with an exemplary embodiment of an integral conduit modular (ICM) lighting system;

[0012] FIG. 2 is a front perspective view of an integral conduit modular lighting system with the lens removed;

[0013] FIG. 3 is a back perspective view of an integral conduit modular lighting system;

[0014] FIG. 4 is a schematic circuit diagram of an integral conduit modular lighting system;

[0015] FIG. 5A is a front plan view of an integral conduit modular lighting system;

[0016] FIG. 5B is a front plan view of a conduit body and integral conduit modular lighting system;

[0017] FIG. 6 is a front plan view of an integral conduit modular lighting system secured to a conduit body; and

[0018] FIG. 7 is a front plan view of a substrate having electrical components thereon.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

[0019] FIG. 1 shows a perspective view of an illustrative free range-style chicken coop installation with an exemplary embodiment of an integral conduit modular (ICM) lighting system. In this example, a coop installation 100 includes a frame 105 and a number of bays 105 disposed on rows of three bays on both a lower level and an upper level. In an illustrative example of egg production, a number of chickens may spend at least part of their time in the bays where they may receive food, air, water, and they may also deposit eggs. In some coop installations, the eggs may roll down a ramp (not shown) to an egg collection/conveyer system (not shown).

[0020] On the lower level of the coop installation 100, an interior volume of each of the bays 110 is illuminated by an integral conduit modular lighting system that includes sections of electrical conduit 115 connected to corresponding ports of a number of integral light modules (ILMs) 120. Each of the ILMs 120 includes a conduit body 125 and a light engine 130 attached to an open longitudinal face of the conduit body 125. For the depicted lower level of bays 110, the conduit 115 and ILMs 120 are positioned to direct from a peripheral position outside the frame 105 and toward a central midline of the coop installation 100. The ILMs 120 are positioned substantially in an upper portion of the bays 110 of the lower level to promote sufficient illumination of the water and feed facilities within each of the bays 105. The ILM 120 may advantageously provide substantial illumination of food and water access facilities in the bays 110 while the bays are substantially populated with chickens.

[0021] By way of example, and not limitation, and in various implementations, the conduit 115 and/or the conduit body 125 may be of a standard or conventional type which may be used by electricians, for example, to install electrical wiring. In the depicted example, the conduit body 125 may be of the type of conduit body for rigid conduit that is commercially available in standard sizes, for example, from Thomas & Betts Corporation of Tennessee.

[0022] On the upper level of the coop installation 100, an interior volume of each of the bays 110 is illuminated by an integral conduit modular lighting system that includes sections of electrical conduit 140 connected to corresponding ports of a number of integral light modules (ILMs) 150. Each of the ILMs 150 includes a conduit body 155 and oppositely directed light engines 160a, 160b attached to opposing open longitudinal faces of the conduit body 155. For the depicted upper level of bays 110, the conduit 140 and the ILMs 150 are positioned to direct light outward from a central position along the midline of the coop installation 100. Each of the ILMs 150 in the upper level are positioned substantially in an upper portion of the bays 110 to provide sufficient illumination of the water and feed facilities within the bays 110 on either side of the midline of the coop installation 100. The ILM 150 may advantageously provide substantial illumination of food and water access facilities in the bays 110 while the bays are substantially populated with chickens.

[0023] In one embodiment as best shown in FIG. 2 the ILM 150 includes a light engine 160 that has a heat sink 165 that in one embodiment is a sheet of metal where first openings 170 are disposed through the heat sink 165 to align with openings on the conduit body 155. A second opening 175 is also disposed through the heat sink 165 to provide a pathway for wire connectors 180 that can include leads 185 for electrical connection to wiring within the conduit 140 to power the ILM 150.

[0024] A gasket 190 is secured to a first side 195 of the heat sink 165 and is of size and shape to mate with the perimeter of the conduit body 155. In this manner a sealing connection is formed between the ILM 150 and conduit body 155 when fasteners are used to secure the ILM 150 to the conduit. Specifically the gasket 190 is made of a flexible material that deforms when pressed against the conduit body 155 to form a water tight seal between the heat sink 165 and conduit body 155.

[0025] On a second side 200 of the heat sink 165 an adhesive layer 205 is provided that in a preferred embodiment is a heat conducting epoxy that not only adheres or secures a light board 210 to the heat sink 165, but also conveys heat from the light board 210 to the heat sink 165. The adhesive layer 205 can be any size and can be of size and shape to have openings disposed therethrough to accommodate fasteners used to connect the ILM 150 to the conduit body 155.

[0026] The light board 210 is a substrate that can be made out of any material including ceramic material or can also be a PCB, present a semiconductor die or the like such that the substrate can hold and electrically connect a plurality of electrical components 215. These electrical components 215 are best shown in the circuit diagram of FIG. 4.

[0027] In particular the circuit 220 on the board 210 receives power from an AC input 225. A fuse 230 is provided for circuit protection along with a metal-oxide varistor (MOV) 232 or zener diode before the AC current flows to a rectifier 235. Once rectified that current flow to a plurality of LEDs 240 and driving elements 245 such as transistors 250 used in combination with resistors 255 to form a bypass circuit 260 to control the operation of the LEDs 240. In one embodiment the transistors are MOSFETs, while in other embodiments the transistors are IGFETs or other similar transistors known in the art. In this embodiment the electrical components 215 are arranged as shown in FIG. 2 with the plurality of LEDs 240 centrally located on the board 210 with other electrical components 215 such as the rectifier 235 and driving elements 245 on the perimeter of the board 210 surrounding the LEDs to provided enhanced lighting diffusion.

[0028] A lens element 265 is secured to the adhesive layer 205 and surrounds the board 210. In this manner the lens 265 provides additional water tight protection to the board 210 to ensure the circuitry 220 on the board does not get wet during high pressure cleaning of the lighting as is common in an agricultural or barn setting. In addition the lens 265 is made of a transparent material to allow the light from the LEDs to be diffused throughout the dwelling or area containing the lighting assembly. In one embodiment the lens 265 is made of a plastic material. The lens 265 also has openings 270 disposed therethrough that align with the openings in the adhesive layer 205, heat sink 165 and conduit body 155 so that fasteners 275 can be used to secure the ILM 150 to the conduit body 155.

[0029] Thus provided is a ILM 150 that is easy and inexpensive to manufacture. The ILM can be used to replace existing lighting in dwellings such as barns or other agricultural dwellings by using existing electrical conduits 115. Specifically, the ILM 150 has wire connectors 180 that connect to the existing conduit wiring and a structure designed to sealing secure to an existing conduit body 155. In particular, as a result of the use of a gasket 190, adhesive layer 205 and lens 265 the board 210 is sealed from exterior conditions preventing shortages when the ILMs 150 are washed with high pressure water. Thus, at the very least all of the objects have be met.