Patent Application
20190301716
The present invention relates to a luminaire, especially to a removable luminaire with internal thermal insulation.
Lights and luminaires are deeply interwoven with our lives.
They make the lives much more convenient. Along with the ever-changing technology, there are various luminaires available on the market now and each has its own features. No matter incandescent light bulbs, fluorescent lamps, metal halide lamps, external electrode fluorescent lamps, compact fluorescent lamps, and LED modules for lighting, all have their own Photoelectric Performance, safety performance, environmental performance and price-performance ratio. LED has great potential in lighting field. The LED lighting applications and market shares are increased along with well-developed LED technology and lower cost of the LED products.
In the future, besides luminous efficacy, other factors of the lighting source such as lighting effect, visual comfort, biological effects, safety and environmental performance, resource consumption, etc. should also be considered. The incandescent lamps and energy-saving light bulbs used for public lighting or household lighting available on the market are gradually replaced by LED owing to low power consumption and long service life of the LED. The LED products are evolved and developed rapidly.
The conventional high intensity discharge light has a compatibility problem. Besides self-ballasted mercury vapor light, light bulbs in the high intensity discharge (HID) lamps need to work with electronic ballasts. There are two types of ballasts. One is CWI (Constant Wattage Isolated) ballast that requires an ignitor to provide a high-voltage electric arc for starting the lamp. The other is CWA (Constant Wattage Autotransformer) ballast that includes a capacitor in series with the lamp. To start the lamp requires no high voltage. In the HID lamp, a specific voltage is required to start so that the HID lamp is unable to connect to mains electricity. Thereby LED are more flexible and more widely applied to different fields.
Moreover, a driver power and electronic components in the luminaire have their own limits on temperature. The glass case is used at temperature below 250° C. while the electronic components work at temperature below 105° C. That means the temperature of the electronic components is too high and the LED luminaire is easily damaged once heat is transferred from the driver power to the electronic components. If the heat is transferred from the electronic components to the driver power, abnormal temperature in the driver power occurs. These conditions have negative effect on the luminaire. The conventional techniques use a certain amount of metal (such as aluminum alloy) over a certain area to conduct and dissipate heat generated by the electronic components and the driver power. The heat dissipation member made from metal leads to increased overall weight of the LED luminaire and further affects its use. The overall temperature resistance is also weaker than the conventional luminaire with glass bulbs. Moreover, the use of the metal for heat dissipation makes the direction the heat flows become more uncertain.
Not all LED luminaires are installed vertically to the ground. Among the luminaires directed parallel to the ground, especially those arranged with a large amount of light sources, plastic material between the electronic components and the power box can't withstand the weight of the light sources. Thus the luminaire is easy to have failure, damages or deformation. Therefore the service life of the luminaire is significantly reduced.
In order to solve the shortcomings of the conventional luminaire, how to dissipate heat from the electronic components and the driver power effectively and also minimize heat transfer therebetween, the overall weight control, and the improvement of durability have become important issues. Thus there is room for improvement and there is a need to provide a luminaire that solves the problems mentioned above.
Therefore it is a primary object of the present invention to provide a luminaire that reduces heat transfer between a driver power and electronic components.
It is another object of the present invention to provide a luminaire in which not only strength and stiffness of a driver and electronic components are improved, deformation and damage problems caused by abnormal temperature or its own weight can also be solved.
In order to achieve the above objects, a luminaire according to the present invention includes a light socket, at least one heat insulation sheet disposed on a top surface of the light socket, and at least one first light emitting module arranged over the heat insulation sheet. The light socket includes a case and a fixing end set on the edge of a top surface of the case. A first fixing part is arranged at the edge of the heat insulation sheet. One end of the first light emitting module is provided with a second fixing part which is fixed on the fixing end together with the first fixing part.
The light socket further includes a main body. A third fixing part is disposed on the edge of a top surface of the main body and is fixed on the fixing end. A driver power is mounted in the main body and is electrically connected to the first light emitting module.
The heat insulation sheet includes a first through hole while the first light emitting module has a second through hole. A wire is passed through the first through hole and the second through hole for connecting the driver power and the first light emitting module.
The first light emitting module further includes a first light base, a first light panel, and a first lampshade. The first light base has a first light trough and the first light panel is mounted in the first light trough of the first light base while the first lampshade that covers the first light panel is set on the first light base.
The first lampshade includes a plurality of locking members on two sides thereof while a plurality of locking holes corresponding to the locking members respectively is disposed on the first light base and located around the first trough. The locking members of the first lampshade are fastened with the locking holes of the first light base correspondingly.
The first light emitting module further includes a first heat dissipation part that is disposed on one side of the first light base, opposite to the side of the first light base arranged with the first light trough.
The first heat dissipation part includes a plurality of heat dissipation fins that is arranged in parallel.
The luminaire further includes a second light emitting module with a first connecting part while a first connecting end is disposed on the other end of the first light emitting module. The second light emitting module is fixed on and connected to the first light emitting module by the first connecting part and the first connecting end connected to each other.
The second light emitting module further includes a second light base, a second light panel, and a second lampshade. The second light base has a second light trough and the second light panel is mounted in the second light trough of the second light base while the second lampshade that covers the second light panel is set on the second light base.
The second light emitting module further includes a second heat dissipation part that is disposed on one side of the second light base, opposite to the side of the second light base arranged with the second light trough.
The second heat dissipation part includes a plurality of heat dissipation members that is arranged circularly.
In order to achieve the above objects, a luminaire according to the present invention includes a light socket, at least one heat insulation sheet, and at least one first light emitting module. The light socket includes a main body and a case. A driver power is mounted in the main body and the case is covering and mounted on the main body. The heat insulation sheet is disposed on a top surface of the main body and further including a first through hole. The first light emitting module is arranged over the heat insulation sheet and is electrically connected to the driver power through the first through hole.
A fixing end is set on the edge of the case and a first fixing part is arranged at the edge of the heat insulation sheet. The first light emitting module further includes a second fixing part and a third fixing part is arranged at the edge of a top surface of the main body. The first fixing part, the second fixing part and the third fixing part are all fixed on the fixing end.
The first light emitting module further includes a second through hole. A wire is passed through the first through hole and the second through hole for electrically connection between the driver power and the first light emitting module.
The first light emitting module includes a first light base, a first light panel, and a first lampshade. The first light base has a first light trough and the first light panel is mounted in the first light trough while the first lampshade that covers the first light panel is set on the first light base.
A plurality of locking members is arranged at two sides of the first lampshade while the first light base includes a plurality of locking holes corresponding to the locking members respectively and located around the first trough. The locking members of the first lampshade are locked with the locking holes of the first light base correspondingly.
The first light emitting module further includes a first heat dissipation part that is mounted on one side of the first light base, opposite to the side of the first light base arranged with the first light trough.
The first heat dissipation part includes a plurality of heat dissipation fins that is arranged in parallel.
The luminaire further includes a second light emitting module with a first connecting part while a first connecting end is mounted on the other end of the first light emitting module. The second light emitting module is fixed on and connected to the first light emitting module by the first connecting part connected to the first connecting end.
The second light emitting module further includes a second light base, a second light panel, and a second lampshade. A second light trough is formed on the second light base and the second light panel is mounted in the second light trough of the second light base while the second lampshade that covers the second light panel is disposed on the second light base.
The second light emitting module further includes a second heat dissipation part that is arranged at one side of the second light base, opposite to the side of the second light base provided with the second light trough.
The second heat dissipation part includes a plurality of heat dissipation members that is disposed circularly.
The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments and the accompanying drawings, wherein
In order to learn the purposes, features and functions of the present invention, please refer to the following embodiments and related description.
A luminaire of the present invention is provided for solving the problems of the conventional LED luminaires such as heat transfer between the electronic components and the light source, abnormal temperature, over-weight of the light emitting module, strength and stiffness, durability, etc.
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In summary, the luminaire according to the present invention mainly includes a light socket, at least one heat insulation sheet, at least one first light emitting module, and a second light emitting module. A case is mounted on the light socket and used to fix and connect the first light emitting module. Compared with the structure of the conventional luminaire in which the first light emitting module is connected to and fixed on the main body of the light socket, the structure of the present luminaire solves the problem of shortened service life caused by deformation and damage of the light socket. The light socket is easily deformed and damaged owing to the weight of the luminaire while the luminaire is used at high temperature. The arrangement of the heat insulation sheet between the light socket and the light emitting modules can reduce heat transfer between the driver power in the light socket and the light emitting modules. Thereby the service life of the luminaire is increased.
Additional advantages and modifications will readily occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to the specific details, and representative devices shown and described herein. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalent.
