Adjustable light for underwater photography
First Claim
Patent Images
1. A diving light for underwater photography, comprising:
- a housing or body containing a battery and electronics, the body being sealed against intrusion of water,a face plate of heat-conducting metal on the front of the housing or body, the face plate facing forward, comprising contiguous metal and including an LED light source positioned to project through a window in the face plate, the LED light source being mounted on an LED mounting plate directly secured against said contiguous metal of the face plate and in thermal conductive contact with said contiguous metal of the face plate,the contiguous metal of the face plate being positioned to be in direct contact with water around the front of the diving light such that heat from the LED light source is conducted from the LED mounting plate into the contiguous metal of the face plate and directly into the water at an exterior of the face plate,the face plate being configured such that water can enter the diving light between the body and said contiguous metal of the face plate to contact a back side of said contiguous metal of the face plate to cool the LED light source from a back side of the LED light source, anda water-sealed switch on the exterior of the housing or body, connected to selectively power the LED light source, at desired light levels,whereby cooling of the LED light source is effected by contact of water with the face plate at an exterior front of the diving light and also at the back side of the face plate.
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Accused Products
Abstract
An underwater diving light includes efficient cooling of LEDs and other internal electronics by heat transfer to ambient water. The water is in contact with a metallic face plate or puck that conducts heat via contiguous metal from an LED circuit board or LED face plate. Ambient water can enter the assembly to spaces between the face plate and an intermediary plate at the front of a housing to efficiently cool the LEDs and associated electronics. In a high-output form the light can emit 8000 lumens, and in this embodiment the battery is cooled by ambient water. The face plate or puck is interchangeable, for different lighting characteristics.
44 Citations
19 Claims
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1. A diving light for underwater photography, comprising:
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a housing or body containing a battery and electronics, the body being sealed against intrusion of water, a face plate of heat-conducting metal on the front of the housing or body, the face plate facing forward, comprising contiguous metal and including an LED light source positioned to project through a window in the face plate, the LED light source being mounted on an LED mounting plate directly secured against said contiguous metal of the face plate and in thermal conductive contact with said contiguous metal of the face plate, the contiguous metal of the face plate being positioned to be in direct contact with water around the front of the diving light such that heat from the LED light source is conducted from the LED mounting plate into the contiguous metal of the face plate and directly into the water at an exterior of the face plate, the face plate being configured such that water can enter the diving light between the body and said contiguous metal of the face plate to contact a back side of said contiguous metal of the face plate to cool the LED light source from a back side of the LED light source, and a water-sealed switch on the exterior of the housing or body, connected to selectively power the LED light source, at desired light levels, whereby cooling of the LED light source is effected by contact of water with the face plate at an exterior front of the diving light and also at the back side of the face plate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A diving light for underwater use, comprising:
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a housing or body containing a battery and electronics, the body being sealed against intrusion of water, a face plate or puck of heat-conducting metal attached to the front of the housing or body, including an LED light source positioned to project through a window of the face plate or puck, the LED light source being on an LED plate in heat-conductive contact with metal of the face plate or puck, the housing or body having a front intermediary plate, closing the housing or body, and including spacer means between the intermediary plate and the face plate or puck maintaining a space for ambient water flow between the intermediary plate and the face plate or puck in the assembled diving light, and including a sealed connection between the intermediary plate and the puck defining a conduit for power and signals between the LED plate and the housing or body, the sealed connection occupying a portion of the intermediary plate, whereby water flowing between the intermediary plate and the face plate or puck effectively cools the LED light source as well as cooling the intermediary plate, and a contiguous metal heat conductive path in the housing or body from the battery to the intermediary plate, so that the battery is also cooled by ambient water. - View Dependent Claims (14, 15, 16, 17)
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18. A diving light for underwater use, comprising:
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a housing containing a battery and electronics, the housing being sealed against intrusion of water, a face plate or puck of heat-conducting metal attached to the front of the housing, including an LED light source positioned to project through a window of the face plate or puck, the LED light source being secured on an LED plate in heat-conductive contact with metal of the face plate or puck, the housing having an intermediary plate at front, closing the housing, and including spacer means between the intermediary plate and the face plate or puck maintaining a space for ambient water flow between the intermediary plate and the face plate or puck in the assembled diving light, and including a sealed connection between the intermediary plate and the puck defining a conduit for power and signals between the LED plate and the housing or body, the sealed connection occupying a portion of the intermediary plate, whereby water flowing between the intermediary plate and the face plate or puck effectively cools the LED light source, and means for dissipating heat from the battery to ambient water, for cooling of the battery. - View Dependent Claims (19)
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Specification