Lighting fixture extension

Abstract

A lighting assembly includes an airflow chamber having a first and second ends and a side wall separating the first and second ends. The side wall: has a dimension exceeding a maximum opening dimension of a standard-sized light bulb ceiling recess that limits a dimension of objects insertable within the recess; at least partially defines a first opening in fluid communication with an outside environment; at least partially defines a second opening, the second opening being downstream to the first opening and in fluid communication with the outside environment; and includes an inner surface at least partially defining an airflow channel. A light-bulb assembly is coupled to the airflow chamber and includes at least one light emitting source thermally coupled and at least partially placed within the airflow channel, the light emitting source having an electrical contact portion disposed for attachment to an electrical source.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This Non-provisional Utility application is a Divisional application of co-pending U.S. Non-provisional patent application Ser. No. 14 / 701,127, filed on Apr. 30, 2015, which is a Continuation-in-part application of U.S. Non-provisional patent application Ser. No. 13 / 820,695, filed on Mar. 4, 2013, now issued as U.S. Pat. No. 9,052,417, which is a 371 National Stage Entry of International PCT Application No. PCT / US2012 / 32660, filed Apr. 7, 2012, which claims priority to U.S. Provisional Patent Application No. 61 / 473,576, filed Apr. 8, 2011 and U.S. Provisional Patent Application No. 61 / 553,011, filed Oct. 28, 2011, the entireties of which are incorporated by reference.FIELD OF THE INVENTION[0002]The present invention relates generally to lighting assemblies, and more particularly relates to an LED lighting assembly that has an airflow chamber that is self-cooling, without the use of a fan.BACKGROUND OF THE INVENTION[0003]Lighting structures...

AI Technical Summary

Benefits of technology

This solution enhances heat dissipation, reduces energy consumption, minimizes noise and weight, and eliminates the multi-shadow effect, while allowing for flexible installation in different ceiling configurations, thereby extending the lifespan of LED lighting assemblies and improving safety and efficiency.

Problems solved by technology

Traditionally, brighter lighting means higher-power bulbs, higher energy consumption, and a corresponding increase in heat produced by the light.

In fact, in many commercial studio lighting structures, a person cannot safely stand within 3 feet of the light without experiencing a physical discomfort or actual harm from the heat being radiated from the device.

Therefore, these high-power bulbs are not only are dangerous and expensive to purchase, but end up greatly increasing operating costs in both energy consumption of the lights and in cooling costs for the area.

Prior-art bright lights produce heat and are often located in close proximity to the surgeon's head, causing him or her to sweat and / or be uncomfortable.

The heat also raises the temperature in the operating room.

This is partly because LED lights use dramatically less power than traditional bulbs and, as a result, also produce very little heat.

In addition, the lifespan of an LED bulb greatly exceeds that most known prior-art light bulbs.

Because LEDs do not produce the output of standard light bulbs, in particular, the high-powered studio lights, multiple LEDs, organized in arrays, are utilized to replace each bulb.

The adjacent multiple shadows are not only unattractive, but are sometimes rather eerie looking.

For at least this reason, LED light arrays have not been well received in a studio lighting situation.

These fans require energy, add weight and cost to the lighting device, provide a point of potential electrical failure (which can serious damage the remaining components that will become too hot), and create noise.

However the form, and although having a generally longer life than traditional bulbs, these known LEDs, when ran for normal periods of time, experience a drastic reduction in bulb intensity.

This also renders any heat sinks 208 coupled to those prior-art assemblies 200 to be ineffective and inefficient as they still suffer from the same problems as described above, i.e. the LED assembly 200 is still subjected to previously dissipated heat.

Furthermore, as LED lighting technology is still being developed or has increased manufacturing costs, when compared to those prior-art lighting assemblies, those costs are generally placed on the consumer.

However, if there is a retrofit or new light which is applied and which needs to be flush or partially flush with the ceiling, fixed length shafts between the fixed socket and the lighting appliance are inconvenient.

Therefore, for lighting fixtures that are intended to hang relative to the cans at a desired position relative to the ceiling, users must select a lighting fixture with a desired length, which cannot be selectively varied to accommodate differently dimensioned recessed lighting cans.

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