CN109841052B - Infrared emitting device with composite cover - Google Patents

Abstract

The present application discloses an infrared emitting device with a composite cover, comprising a housing, an infrared light-emitting module and a composite cover, wherein the housing has a cavity and an opening; the infrared light-emitting module is arranged in the cavity and emits light toward the opening; the composite cover seals the opening and is connected to the housing, and the composite cover comprises an outer cover layer and an inner cover layer, wherein the thermal conductivity of the outer cover layer is lower than that of the inner cover layer. The present invention uses a composite cover formed by the outer cover layer and the inner cover layer, so as to ensure that each component can operate at a lower operating temperature.

Description

Infrared emitting device with composite cover

technical field

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

Background technique

Infrared emitting device (IR LED) is an indispensable part for the camera to provide night vision function. However, when the temperature of the infrared emitting device increases under high power consumption, its life will be affected, and the temperature of the outer cover will be affected by power consumption. The increase is proportional to the growth. If the IEC60950-1 specification is at an ambient temperature of 25 °C, the temperature of the plastic outer cover should be less than 60 °C, and the temperature of the glass outer cover should be less than 50 °C.

The known infrared emitting device mainly adopts an outer cover made of plastic material, and the plastic outer cover will make the temperature of the infrared light emitting module and the casing to be high. In order to solve this problem, the industry changed the cover from plastic to glass with better thermal conductivity. After simply changing the cover to glass, although the temperature of the infrared light-emitting module, the housing and the cover was reduced, The glass housing still fails to meet the requirements of the aforementioned safety regulations.

In view of this, the inventor of the present invention has devoted himself to the study of the above-mentioned prior art and cooperated with the application of the theory, and tried his best to solve the above-mentioned problems, which is the goal of the present inventor's improvement.

SUMMARY OF THE INVENTION

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

In order to achieve the above-mentioned purpose, the present invention provides an infrared emitting device with a composite cover, including a casing, an infrared light-emitting module and a composite cover, the casing has a cavity and an opening; the infrared The light-emitting module is arranged in the cavity and emits light toward the opening; the composite material cover is enclosed in the opening and connected to the shell, and the composite material cover includes an outer cover layer and a layer formed on the inner side of the outer cover layer. an inner cover layer, the thermal conductivity of the outer cover layer is smaller than that of the inner cover layer.

The inner side of the outer cover layer is provided with a groove, and the inner cover layer is closely installed corresponding to the position of the groove.

The outer cover layer is a transparent plastic plate, and the inner cover layer is a transparent glass plate.

The inner side of the outer cover layer is provided with a groove, the inner cover layer is installed at the position corresponding to the groove, and a space is formed between the outer cover layer and the inner cover layer.

The outer cover layer is a transparent plastic plate, and the inner cover layer is a transparent glass plate.

The outer cover layer is a transparent plastic plate, the inner cover layer is a transparent graphene coating, and the inner cover layer is formed on the inner surface of the outer cover layer by coating.

Further, a lens module is also included, and the lens module is disposed inside the cavity and takes a view toward the opening direction.

The casing includes a bottom plate and a surrounding plate bent and extended from the periphery of the bottom plate, so that the cavity is formed between the bottom plate and the surrounding plate, and the opening is formed at the end of the surrounding plate away from the bottom plate.

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.

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

Description of drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

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

FIG. 2 is a combined cross-sectional view of the first embodiment of the present invention.

3 is a combined cross-sectional view of a second embodiment of the present invention.

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

5 is a combined cross-sectional view of a third embodiment of the present invention.

6 is a combined cross-sectional view of a fourth embodiment of the present invention.

【Symbol Description】

10…Case

11…Bottom plate

12…Hoarding

13…Cavity

14…opening

20…Infrared light-emitting module

21…Printed circuit boards

22…Infrared emitters

30, 30A, 30B...composite cover

31, 31A, 31B... cover layer

311…groove

32, 32A, 32B...Inner cover

A…Interval space

40…Lens module.

Detailed ways

The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the invention are shown in the drawings.

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

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

The casing 10 is roughly in the shape of a rectangle, 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, so that the bottom plate 11 and the A cavity 13 is formed between the enclosure plates 12 , and an opening 14 is formed at one end of the enclosure plate 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 supported by a supporting structure (not shown in the figure). ) is disposed inside the aforementioned cavity 13, and makes the infrared light emitting body 22 emit light toward the opening 14; and the infrared light emitting body 22 can be an infrared light emitting diode (IR LED).

The composite material cover body 30 is enclosed at the opening 14 and connected to the end face of the enclosure plate 12 of the shell 10 . The composite material cover body 30 mainly includes an outer cover layer 31 and an inner cover layer 32 . The outer cover layer 31 and the inner cover in this embodiment are The layers 32 are all a plate, and a groove 311 is formed on the inner side of the outer cover layer 31. The inner cover layer 32 is closely attached 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. Inside the outer cover layer 31 .

Further, the thermal conductivity of the outer cover layer 31 is lower than that of the inner cover layer 32, wherein the outer cover layer 31 can be a transparent plastic sheet, and the inner cover layer 32 can be a transparent glass sheet, so as to ensure Each component of the infrared light emitting module 20 can operate at a lower operating temperature. In this way, it can be obtained from the actual test results that the temperature of the composite cover body 30 is about 53.8° C., which is significantly lower than the standard temperature of IEC60950-1 by 60° C. or less.

Please refer to FIG. 3 , except that the infrared emitting device with a composite cover body of the present invention can be as the above-mentioned embodiment, wherein the composite material cover body 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 is installed corresponding to the position of the groove 311A, and a space A is formed between the outer cover layer 31A and the inner cover layer 32A, so that the heat insulation effect can be achieved and the temperature of 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 structure of the first embodiment. The lens module 40 is also disposed inside the aforementioned cavity 13 and is viewed in the direction of the opening 14 . .

Please refer to FIG. 6 , the composite material cover body 30B of this embodiment mainly includes an outer cover layer 31B and an inner cover layer 32B, wherein the outer cover layer 31B can be a transparent plastic sheet, and the inner cover layer 32B is a transparent The graphene (Graphene) coating, which is formed on the inner surface of the outer cover layer 31B in a coating manner, also has the equivalent effects of the foregoing embodiments.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover the above technical features without departing from the inventive concept. Other technical solutions formed by any combination of its equivalent features. For example, the above-mentioned features are interchangeable with the technical features disclosed in this application (but not limited to) having similar functions.

Claims (9)

1. an infrared emission device with a composite material cover, is characterized in that, comprising: a shell 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, which is enclosed at the opening and connected to the shell, the composite material cover includes an outer cover layer and an inner cover layer, and the thermal conductivity of the outer cover layer is lower than that of the inner cover layer; The outer cover layer is at least partially located outside the inner cover layer, and the inner cover layer and the outer cover layer are arranged in front of the light emitting direction of the infrared light emitting module for the infrared light of the infrared light emitting module to pass through. 2 . The infrared emitting device with a composite cover body as claimed in claim 1 , wherein a groove is provided on the inner side of the outer cover layer, and the inner cover layer is closely installed corresponding to the position of the groove. 3 . 3 . The infrared emitting device with a composite cover body as claimed in claim 2 , wherein the outer cover layer is a transparent plastic plate, and the inner cover layer is a transparent glass plate. 4 . 4 . The infrared emitting device with a composite material cover body as claimed in claim 1 , wherein a groove is provided on the inner side of the outer cover layer, the inner cover layer is installed at a position corresponding to the groove, and the outer cover layer is installed at a position corresponding to the groove. 5 . A space is formed between it and the inner cover layer. 5 . The infrared emitting device with a composite cover body as claimed in claim 4 , wherein the outer cover layer is a transparent plastic plate, and the inner cover layer is a transparent glass plate. 6 . 6 . The infrared emitting device with a composite cover body as claimed in 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 a transparent graphene coating. 7 . A layer is formed by coating on the inner surface of the outer cover layer. 7 . The infrared emitting device with a composite material cover as claimed in claim 1 , further comprising a lens module, the lens module is disposed inside the cavity and is viewed in the direction of the opening. 8 . 8 . The infrared emitting device with a composite cover as claimed in claim 1 , wherein the casing comprises a bottom plate and a surrounding plate bent and extended from the periphery of the bottom plate, so that the bottom plate and the surrounding plate are formed between the bottom plate and the surrounding plate. The cavity is formed therebetween, and the opening is formed at one end of the enclosure plate away from the bottom plate. 9 . The infrared emitting device with a composite cover as claimed in claim 1 , wherein the infrared emitting module comprises a printed circuit board and a printed circuit board mounted on the printed circuit board and electrically connected to the printed circuit board. 10 . An infrared light emitter.

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