TWI628390B - Infrared emitter with composite material cover - Google Patents

Abstract

The invention is an infrared emitting device with a composite material cover, which comprises a housing, an infrared light emitting module and a composite material cover. The housing has a cavity and an opening; the infrared light emitting module is arranged in the cavity and faces the opening. The composite material cover body is sealed at the opening and connected to the shell. The composite material cover body includes an outer cover layer and an inner cover layer, and the thermal conductivity of the outer cover layer is smaller than that of the inner cover layer. This can ensure that each component can operate at a lower operating temperature.

Description

Infrared emitting device with composite material cover

The invention relates to an infrared emitting device, in particular to an infrared emitting device with a composite material cover.

The infrared emitting device (IR LED) is an indispensable part for the camera to provide night vision function, but the infrared emitting device will affect the life after the body temperature rises under the consumption of high power, and it will consume power due to the outer cover temperature The increase is proportional to the growth rate. If the ambient temperature is 25 ℃, the temperature of the plastic casing must be less than 60 ℃, and the temperature of the glass casing must be less than 50 ℃.

The conventional infrared emitting device is mainly an outer cover body made of plastic materials, but the plastic outer cover body will make the temperature of the infrared light emitting module and the case higher. In order to solve this problem, the industry changed the cover body from plastic to glass with better thermal conductivity. After this simple change of the cover body to glass material, although the temperature of the infrared light emitting module, the housing and the cover body was reduced, However, the glass enclosure does not meet the requirements of the aforementioned safety regulations.

In view of this, the present inventors have devoted themselves to the above-mentioned prior art, researched intensively and cooperated with the application of science to try to solve the above-mentioned problems, which has become the goal of the inventors' improvement.

An object of the present invention is to provide an infrared emitting device with a composite material cover, which can ensure that each component can operate at a lower working temperature.

In order to achieve the above object, the present invention provides an infrared emitting device with a composite material cover, which includes a housing, an infrared light emitting module, and a composite material cover. The housing has a cavity and an opening. The light emitting module is disposed in the cavity and emits light toward the opening direction; the composite material cover body is sealed in the opening and connected to the shell, and the composite material cover body includes an outer cover layer and an inner cover layer formed inside the outer cover layer. An inner cover layer, the thermal conductivity of the outer cover layer is smaller than the thermal conductivity of the inner cover layer.

The present invention also has the following effects. By forming a space between the outer cover layer and the inner cover layer, the heat insulation effect can be achieved and the temperature at the corresponding place can be reduced.

10‧‧‧shell

11‧‧‧ floor

12‧‧‧ fence

13‧‧‧capacity

14‧‧‧ opening

20‧‧‧Infrared light emitting module

21‧‧‧printed circuit board

22‧‧‧ Infrared emitter

30, 30A, 30B‧‧‧ composite material cover

31, 31A, 31B‧‧‧ Cover

311‧‧‧groove

32, 32A, 32B‧‧‧Inner cover

A‧‧‧ Space

40‧‧‧ lens module

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

Fig. 2 is an assembled sectional view of the first embodiment of the present invention.

Fig. 3 is an assembled sectional view of a second embodiment of the present invention.

FIG. 4 is an exploded perspective view of a third embodiment of the present invention.

Fig. 5 is an assembled sectional view of a third embodiment of the present invention.

Fig. 6 is an assembled sectional view of a fourth embodiment of the present invention.

The detailed description and technical contents of the present invention are described below with reference to the drawings, but the drawings are provided for reference and description only, and are not intended to limit the present invention.

Please refer to FIG. 1 and FIG. 2. The present invention provides an infrared emitting device with a composite material cover, which mainly includes a housing 10, an infrared light emitting module 20 and a composite material cover 30.

The casing 10 is substantially rectangular, but is not limited to this shape. The casing 10 of this embodiment is composed of a bottom plate 11 and a surrounding plate 12 bent and extended from the periphery of the bottom plate 11. A receiving cavity 13 is formed between the enclosure boards 12, and an opening 14 is formed at an end of the enclosure board 12 away from the bottom plate 11.

The infrared light emitting module 20 mainly includes a printed circuit board 21 and an infrared light emitting body 22 mounted on the printed circuit board 21 and electrically connected to the printed circuit board 21, wherein the printed circuit board 21 is transmitted through a supporting structure (not shown) (Out) is disposed inside the aforementioned cavity 13 and makes the infrared light emitting body 22 emit light toward the opening 14; the infrared light emitting body 22 may be an infrared light emitting diode (IR LED).

The composite cover 30 is sealed at the opening 14 and connected to the end face of the enclosure 12 of the housing 10. The composite cover 30 mainly includes an outer cover layer 31 and an inner cover layer 32. The outer cover layer 31 and the inner cover of this embodiment The layer 32 is a plate, and a groove 311 is opened inside the outer cover layer 31. The inner cover layer 32 is closely adhered to the bottom surface of the groove 311 of the outer cover layer 31 corresponding to the position of the groove 311, so that the inner cover layer 32 is formed. On the inside of the outer cover layer 31, in other words, "the outer cover layer 31 is located at least partially outside the inner cover layer 32".

Further, the thermal conductivity of the outer cover layer 31 is smaller than that of the inner cover layer 32. The outer cover layer 31 may be a transparent plastic plate, and the inner cover layer 32 may be a transparent glass plate. In this way, the temperature of the composite material cover 30 can be obtained from the actual test results to be about 53.8 ° C, which is significantly lower than the IEC60950-1 standard temperature of 60 ° C or less.

Please refer to FIG. 3, the infrared emitting device with a composite material cover according to the present invention may be the same as the above embodiment except that the composite material cover 30A includes an outer cover layer 31A and an inner cover layer 32A on the inner side of the outer cover layer 31A. A groove 311A is provided, and the inner cover layer 32A corresponds to the position of the groove 311A. It is installed, and a space A is formed between the outer cover layer 31A and the inner cover layer 32A, so that the insulation effect can be achieved and the temperature at the corresponding place can be reduced.

Please refer to FIG. 4 and FIG. 5. This embodiment further includes a lens module 40 under the main body structure of the first embodiment. The lens module 40 is also disposed inside the cavity 13 and faces the opening. Viewfinder in 14 directions.

Please refer to FIG. 6, the composite material cover 30B of this embodiment mainly includes an outer cover layer 31B and an inner cover layer 32B, wherein the outer cover layer 31B may be a transparent plastic plate, and the inner cover layer 32B is a transparent The graphene coating is formed on the inner surface of the outer cover layer 31B by a coating method, and thus has the equivalent effect of the foregoing embodiments.

In summary, the infrared emitting device with a composite material cover of the present invention can indeed achieve the intended purpose of use, and solve the lack of knowledge. Because of its novelty and progress, it fully meets the requirements for invention patent applications. To file an application in accordance with the Patent Law, please check and grant the patent in this case to protect the rights of the inventor.

Claims (9)

An infrared emitting device with a composite material cover includes: a housing having a cavity and an opening; an infrared light emitting module disposed in the cavity and emitting light toward the opening; and a composite material cover The composite cover includes an outer cover layer and an inner cover layer, and the thermal conductivity of the outer cover layer is less than that of the inner cover layer; wherein the outer cover layer is at least partially It is located outside the inner cover layer, and the inner cover layer and the outer cover layer are juxtaposed in front of the light emitting direction of the infrared light emitting module, so that the light emitting of the infrared light emitting module can pass through. The infrared emitting device with a composite material cover according to claim 1, wherein a groove is provided on an inner side of the outer cover layer, and the inner cover layer is closely installed corresponding to the position of the groove. The infrared emitting device with a composite material cover according to claim 2, wherein the outer cover layer is a transparent plastic plate, and the inner cover layer is a transparent glass plate. The infrared emitting device with a composite material cover according to claim 1, wherein a groove is provided inside the outer cover layer, the inner cover layer is installed corresponding to the groove position, and the outer cover layer and the inner cover layer are installed. There is a space between them. The infrared emitting device with a composite material cover according to claim 4, wherein the outer cover layer is a transparent plastic plate, and the inner cover layer is a transparent glass plate. The infrared emitting device with a composite material cover according to claim 1, wherein the outer cover layer is a transparent plastic plate, the inner cover layer is a transparent graphene coating, and the inner cover layer is coated with The pattern is formed on the inner surface of the cover layer. The infrared emitting device with a composite material cover as described in claim 1, further comprising a lens module, the lens module is arranged inside the cavity and looks at the direction of the opening. The infrared emitting device with a composite material cover according to claim 1, wherein the housing includes a bottom plate and a surrounding plate bent and extending from the periphery of the bottom plate, so that the housing is formed between the bottom plate and the surrounding plate. The cavity is formed at the end of the surrounding board away from the bottom board. The infrared emitting device with a composite material cover according to claim 1, wherein the infrared light emitting module includes a printed circuit board and an infrared light emitting body mounted on the printed circuit board and electrically connected to the printed circuit board. .