CN209879223U - Heating sheet and camera module applying same - Google Patents
Heating sheet and camera module applying same Download PDFInfo
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- CN209879223U CN209879223U CN201920847011.1U CN201920847011U CN209879223U CN 209879223 U CN209879223 U CN 209879223U CN 201920847011 U CN201920847011 U CN 201920847011U CN 209879223 U CN209879223 U CN 209879223U
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Abstract
The embodiment of the utility model discloses generate heat piece, this generate heat piece include PI rete, the electrically conductive layer that generates heat of metal, temperature sensing varistor printing ink layer and PI rete that top-down set gradually. The embodiment of the utility model provides a, it includes the PI rete, the metal electrically conducts layer that generates heat, temperature sensing varistor printing ink layer and the PI rete that top-down set gradually, simple structure, and the preparation is convenient, and the cost is lower relatively. The embodiment of the utility model provides a still provide a camera module, heat the camera lens through the piece that generates heat, can realize the effect of automatic defrosting, defogging under weather conditions such as cold, or humidity or environment. The method is suitable for a plurality of fields such as vehicle-mounted lenses and outdoor monitoring.
Description
The technical field is as follows:
the utility model relates to a piece generates heat and uses module of making a video recording thereof.
Background art:
most of the traditional electric heaters are made of a power supply connected with a nichrome wire, and due to the limited application, a planar heating sheet with wider application range is provided. However, the planar heating sheet generally has the defects of complex structure and high cost.
The invention content is as follows:
for overcoming current piece that generates heat, the ubiquitous structure is complicated, the higher problem of cost, the embodiment of the utility model provides a piece generates heat on the one hand.
The heating sheet comprises a PI film layer, a metal conductive heating layer, a temperature-sensing variable resistance ink layer and a PI film layer which are sequentially arranged from top to bottom.
The embodiment of the utility model provides a heating sheet, it includes that top-down sets gradually PI rete, metal electrically conduct generate heat layer, temperature sensing varistor printing ink layer and PI rete, simple structure, and the preparation is convenient, and the cost is lower relatively.
On the other hand, the embodiment of the utility model provides a still provide a camera module.
A camera module at least comprises a lens, wherein the lens is provided with the heating sheet for heating the lens.
The camera module of the embodiment of the utility model has the advantages that the lens is provided with the heating sheet for heating the camera module, and the heating sheet comprises the PI film layer, the metal conductive heating layer, the temperature sensing varistor ink layer and the PI film layer which are sequentially arranged from top to bottom, so the camera module has simple structure, convenient manufacture and relatively low cost; the lens is heated through the heating sheet, and the effects of automatic defrosting and demisting can be achieved under cold or humid weather conditions or environments. The method is suitable for a plurality of fields such as vehicle-mounted lenses and outdoor monitoring.
Description of the drawings:
in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a cross-sectional structure of a heating sheet of the present invention;
FIG. 2 is a detailed structural diagram of an embodiment of the heat generating sheet of the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the camera module of the present invention.
The specific implementation mode is as follows:
in order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
When embodiments of the present invention refer to the ordinal numbers "first", "second", etc., it should be understood that the terms are used for distinguishing only when they do express the ordinal order in context.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a heating sheet 1 includes a PI film layer 11, a metal conductive heating layer 12, a temperature-sensitive variable resistance ink layer 13, and a PI film layer 14, which are sequentially disposed from top to bottom.
The embodiment of the utility model provides a, it includes the PI rete, the metal electrically conducts layer that generates heat, temperature sensing varistor printing ink layer and the PI rete that top-down set gradually, simple structure, and the preparation is convenient, and the cost is lower relatively.
Further, as a preferred embodiment of the present invention, but not limited thereto, the temperature-sensitive variable resistance ink layer 13 is used for detecting a temperature signal of the heat generating sheet 1, and changing the self-resistance according to the temperature signal, so as to change the heat generation amount of the metal conductive heat generating layer 12. The heating sheet can directly automatically adjust the heating amount through the temperature-sensing variable resistance ink layer, and is convenient to use.
Still further, as a preferred embodiment of the present invention, but not limited thereto, the metal conductive heating layer 12 is connected in series with the temperature-sensitive varistor ink layer 13, and the metal conductive heating layer 12 is isolated from the temperature-sensitive varistor ink layer 13 by insulation treatment or by an insulation layer. Simple structure, and can automatically adjust the heating value after being electrified.
Still further, as a preferred embodiment of the present invention, but not limited thereto, the metal conductive heating layer 12 is an iron chromium aluminum foil layer or a copper foil layer. Simple structure and high heat efficiency.
Further, as a preferred embodiment of the present invention, but not limited thereto, the temperature-sensitive varistor ink layer 13 is made of a polycrystalline ceramic material and one or more of carbon black, graphite, and graphene. The structure is simple.
Further, as a preferred embodiment of the present invention, but not limited thereto, the resistance value R of the temperature-sensitive varistor ink layer 13 increases with an increase in the temperature value T, and the resistance value R of the temperature-sensitive varistor ink layer 13 decreases with a decrease in the temperature value T. The structure is simple.
Further, as a preferred embodiment of the present invention, the thickness of the heat generating sheet 1 is 0.5 to 2.5mm as a whole. Simple structure and convenient use.
Further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 2, the heat generating sheet 1 has a ring shape. Simple structure, convenient cover is located on the camera lens product.
Still further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 2, an NTC sensor 15 for detecting a temperature signal of the heat generating sheet 1 is disposed on the heat generating sheet 1 on the outer surface of the PI film layer 11 or the PI film layer 14. Simple structure, can multiple temperature signal that detects the piece that generates heat.
Still further, as a preferred embodiment of the present invention, but not limited thereto, as shown in fig. 3, an image pickup module includes at least a lens, and the lens is provided with the above-described heat generating sheet 1 for heating the lens. The metal conductive heating layer 12 is connected in series with the temperature-sensing variable resistance ink layer 13, and the temperature-sensing variable resistance ink layer 13 is used for detecting the temperature signal of the heating sheet 1 and changing the resistance according to the temperature signal, so that the heating amount of the metal conductive heating layer 12 is changed.
The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not to be construed as limiting the invention to the precise embodiments disclosed herein. All with the utility model discloses a method, structure etc. are similar, the same, or to the utility model discloses make a plurality of technological deductions or replacement under the design prerequisite, all should regard as the utility model discloses a protection scope.
Claims (9)
1. The heating sheet is characterized by comprising a PI film layer, a metal conductive heating layer, a temperature-sensing variable resistance ink layer and a PI film layer which are sequentially arranged from top to bottom.
2. A heat generating sheet according to claim 1, wherein the metal conductive heat generating layer is connected in series with the temperature sensitive varistor ink layer.
3. A heat generating sheet according to claim 2, wherein the metal conductive heat generating layer is an iron chromium aluminum foil layer or a copper foil layer.
4. A heat generating sheet according to claim 2, wherein the temperature sensitive varistor ink layer is made of a polycrystalline ceramic material and one or more of carbon black, graphite, and graphene.
5. A heat generating sheet according to claim 4, wherein the resistance value R of the temperature sensitive variable resistance ink layer becomes larger as the temperature value T increases, and the resistance value R of the ink layer becomes smaller as the temperature value T decreases.
6. A heat generating sheet according to claim 1, 2, 3, 4 or 5, wherein the heat generating sheet has an overall thickness of 0.5 to 2.5 mm.
7. A heat generating sheet according to claim 6, wherein the heat generating sheet is ring-shaped.
8. The heating sheet according to claim 7, wherein an NTC sensor for detecting a temperature signal of the heating sheet is provided on an outer surface of the PI film layer.
9. A camera module, at least comprising a lens, characterized in that the lens is provided with a heating sheet according to any one of claims 1 to 8 for heating the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920847011.1U CN209879223U (en) | 2019-06-05 | 2019-06-05 | Heating sheet and camera module applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920847011.1U CN209879223U (en) | 2019-06-05 | 2019-06-05 | Heating sheet and camera module applying same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209879223U true CN209879223U (en) | 2019-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920847011.1U Active CN209879223U (en) | 2019-06-05 | 2019-06-05 | Heating sheet and camera module applying same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209879223U (en) |
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2019
- 2019-06-05 CN CN201920847011.1U patent/CN209879223U/en active Active
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