JP5073471B2 - Electric heater for vehicles - Google Patents

Description

  The present invention relates to an electric heater for a vehicle.

Conventionally, as an electric heater for vehicles, what was built in the interior material of a door is known, for example (refer to patent documents 1). This heater is configured by fixing an electric heating sheet 4 to a welding sheet 2, and is interposed between the hard board 1 and the carpet 3 in this state. Thereby, this heater can give a passenger a heating effect without narrowing the vehicle interior space.
Japanese Utility Model Publication No. 1-123751

  However, since the heat generating sheet 4 is fixed to the welding sheet 2, the heat generated from the heat generating sheet 4 is not only radiated to the carpet 3 side (vehicle interior side) but also to the hard board 1 side (vehicle body side). ). Therefore, the heating efficiency was not good.

  This invention is made | formed in view of this conventional subject, and it aims at providing the heater for vehicles which can improve heating efficiency.

  In order to solve the above-mentioned problem, an electric heater for a vehicle according to claim 1 of the present invention includes an electric heating element, a high heat dissipation element provided on a surface side of the heating element, and the heating element. An electric heater for a vehicle comprising a low heat radiator provided on a back surface side and a fixing means provided on a back surface side of the low heat radiator, wherein the high heat radiator is the low heat radiator. The heat radiation rate is higher than that of the material, and is attached to the vehicle body by the fixing means with the surface of the high heat dissipation body facing the vehicle interior.

  In such a configuration, the electric heater for a vehicle according to the first aspect can suppress heat dissipation to the vehicle body side, and therefore, the heat dissipation amount to the vehicle interior is larger than before.

The vehicle electric heater according to claim 1 of the present invention, the pre-Symbol low heat radiator, in addition to low thermal emissivity than the high heat radiator, heat reflectance with high material It is characterized by being composed.

In such a configuration, the electric heater for a vehicle according to claim 1 , because the heat received by the low heat radiator is reflected and radiated to the passenger compartment side, compared with a case where a low heat radiator having a low reflectance is used. As a result, the amount of heat released to the passenger compartment increases.

The vehicle electric heater according to claim 1 of the present invention, the pre-Symbol high heat radiator, disposed in close contact with the surface of the heating element, the low heat dissipation body, the rear surface of the heating element It is characterized by being provided on the back side of the heating element with a gap in between.

With such a configuration, in the electric heater for a vehicle according to claim 1 , since the high heat radiating body easily receives heat from the heat generating body, the amount of heat radiated into the vehicle interior is further increased.

Moreover, the electric heater for vehicles of Claim 2 of this invention is an electric heater for vehicles of Claim 1 , The said high heat radiating body coat | covers the said heat generating body, A peripheral part is in this state Is bent to the back side and fixed to the back side of the heating element.

In such a configuration, the electric heater for a vehicle according to claim 2 has a larger area that the high heat radiator receives from the heat generator than when the high heat radiator does not cover the heat generator. The amount of heat dissipation increases.

According to a third aspect of the present invention, there is provided a vehicular electric heater according to the first or second aspect of the present invention, wherein the low electric conduction material is provided between the fixing means and the low heat radiator. This low thermal conductive material is characterized by having a thermal conductivity lower than that of the low heat radiator.

In such a configuration, the electric heater for a vehicle according to claim 3 can suppress heat from being transferred from the low heat radiating body to the vehicle body side by heat conduction.

Moreover, the electric heater for vehicles of Claim 4 of this invention is an electric heater for vehicles of any one of Claims 1-3. WHEREIN: The said fixing means is with respect to the said vehicle body. It is configured to be detachable.

In such a configuration, the electric heater for a vehicle according to claim 4 can freely change the installation position according to the user's preference.

Moreover, the electric heater for vehicles of Claim 5 of this invention is an electric heater for vehicles of any one of Claims 1-4 . It is a thin electric heating pad which has flexibility. It is characterized by being.

In such a configuration, the electric heater for a vehicle according to claim 5 can be installed in close contact with the installation location by changing the shape according to the shape of the installation location at the time of installation.

  In the electric heater for a vehicle according to claim 1 of the present invention, a low heat radiator is used to suppress heat radiation to the vehicle body side. For this reason, the amount of heat radiation to the vehicle interior becomes larger than before. Therefore, the electric heater for vehicles of Claim 1 can improve heating efficiency.

Further, in the vehicle electric heating device according to claim 1 of the present invention, and to emit to the vehicle interior by reflecting low heat radiator has received heat. For this reason, compared with the case where a low heat dissipation body with a low reflectance is used, the heat dissipation amount to a vehicle interior increases. Therefore, the electric heater for vehicles of Claim 1 can further raise heating efficiency.

Further, in the vehicle electric heating device according to claim 1 of the present invention, it makes good contact with high heat dissipation member on the surface of the heating element, and configured to open a gap between the heating element and the low heat radiating body. As a result, the high heat radiating body easily receives heat from the heat generating body, so that the amount of heat radiated into the passenger compartment is further increased. Therefore, the electric heater for vehicles of Claim 1 can further raise heating efficiency.

Moreover, in the electric heater for vehicles of Claim 2 of this invention, it comprised so that a high thermal radiation body might coat | cover a heat generating body. Thereby, compared with the case where the high heat radiating body does not cover the heat generating body, the area that the high heat radiating body receives from the heat generating body is increased, so that the heat radiation amount to the vehicle interior is increased. Therefore, the electric heater for vehicles of Claim 2 can further raise heating efficiency.

Moreover, in the electric heater for vehicles of Claim 3 of this invention, the low heat conductive material was interposed between the fixing means and the low heat radiator. Thereby, it is possible to suppress heat from moving from the low heat radiating body to the vehicle body side. Therefore, the electric heater for vehicles according to claim 3 can prevent useless heat loss.

In the electric heater for a vehicle according to claim 4 of the present invention, the fixing means is configured to be detachable from the vehicle body. This makes it possible to freely change the installation position according to the user's preference. Therefore, the electric heater for vehicles according to claim 4 can improve usability.

Moreover, in the electric heater for vehicles of Claim 5 of this invention, it comprised to the thin electrothermal pad which has flexibility. Thereby, when installing the electric heater for vehicles, it becomes possible to install in close contact with the installation location by changing the shape according to the shape of the installation location. Therefore, the electric heater for vehicles of Claim 5 can prevent that the space in a vehicle interior becomes narrow.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic sectional view of an essential part of a rear seat of a vehicle showing an embodiment of the present invention. In the rear seat, a floor panel 102 is fixed to the left and right side members 101, 101 (only one side is shown). A PET sheet 103 is laid on the upper surface of the floor panel 102. On the left and right sides of the PET sheet 103, partition members 104 are arranged in the vehicle front-rear direction. A space is formed between the partition member 104 and the side member 101. A vehicle body harness 105 is arranged in this space.

  Further, a floor carpet 106 is laid in the foot region of the rear seat extending from the upper surface of the PET sheet 103 to the left and right side members 101, 101. The left and right side portions of the floor carpet 106 are bent upward. A service mat 107 is laid on the upper surface of the flat portion 106a (foot placement position) of the floor carpet 106. A space is formed between the floor carpet 106 and the partition member 104. A heat insulating material 108 is disposed in this space. An electric heating pad (electric heater for vehicle) 1 is fixed to the upper surface of the left and right side portions 106 b of the floor carpet 106. Hereinafter, the structure of the electrothermal pad 1 will be described.

  FIG. 2 is a schematic longitudinal sectional view of the electrothermal pad 1. The electrothermal pad 1 is formed in a thin shape having flexibility, and includes a heating element 2, a high heat dissipation element 3, a low heat dissipation element 4, a plurality of low heat conductive members 5, and a plurality of fixing means 6. ing.

  The heating element 2 includes a nichrome wire 21 and a holding cloth 22 such as felt. The nichrome wire 21 is held in a meandering manner on the surface 221 of the holding cloth 22. A power source is connected to both ends of the nichrome wire 21 via an operation unit (not shown). In addition, the structure of the heat generating body 2 will not be specifically limited if it is an electrical type like this Embodiment.

  The high heat radiator 3 is formed in a sheet shape. The high heat radiator 3 is configured using a material having a higher heat emissivity than the low heat radiator 4. An example of this material is a 100% cotton cloth. Further, this cloth is preferably the same color as the floor carpet 106.

  Further, the surface 31 of the high heat radiator 3 is directed to the vehicle interior I. The back surface 32 of the high heat radiating body 3 is in close contact with the upper end 211 of the nichrome wire 21 (the surface of the heat generating body 2) and covers the heat generating body 2. Further, the high heat radiating body 3 is fixed to the back surface 222 (the back surface of the heat generating body 2) of the holding cloth 22 with the peripheral edge portion 33 bent to the back side while the heat generating body 2 is covered.

  The low heat radiator 4 is formed in a sheet shape. The low heat radiating body 4 is made of a material having a lower heat emissivity than that of the high heat radiating body 3 and a high heat reflectivity. An example of this material is an aluminum sheet. The low heat radiating body 4 is provided on the back surface 222 side of the heating element 2. Specifically, the surface 41 of the low heat radiating body 4 is fixed to the surface 31 of the peripheral edge portion 33 of the high heat radiating body 3 that is bent back. Thereby, a gap S is formed between the low heat radiator 4 and the back surface 222 of the heat generator 2.

  The plurality of low thermal conductive materials 5 are provided at predetermined locations on the back surface 42 of the low heat radiator 4. Each low thermal conductive material 5 is configured using a material having a lower thermal conductivity than the low heat radiator 4. An example of this material is silicon sponge.

  The plurality of fixing means 6 are provided at predetermined locations on the back surface 42 of the low heat radiating body 4 via the low thermal conductive material 5. These fixing means 6 are detachably attached to the left and right side portions 106 b of the floor carpet 106. Examples of the fixing means 6 include a magic tape (registered trademark) made of nylon resin.

  The operation of the electrothermal pad 1 configured as described above will be described. When the electrothermal pad 1 is turned on by an occupant's operation, the nichrome wire 21 generates heat. As shown in FIG. 3, the heat 2 a generated from the upper portion of the heating element 2 passes through the high heat dissipation body 3 and is radiated into the vehicle interior I. On the other hand, the heat 2 b generated from the lower part of the heating element 2 reaches the low heat dissipation element 4. Here, since the low heat radiator 4 has a low thermal emissivity, the heat radiation to the floor carpet 106 can be suppressed. Moreover, since the low heat radiator 4 has a high thermal reflectance, it reflects the received heat 2b. The reflected heat 2 b passes through the high heat radiating body 3 and is radiated into the vehicle interior I.

  As described above, since the electric heating pad 1 of the present embodiment uses the low heat radiating body 4, in order to suppress the heat radiation to the vehicle body side (floor carpet 106), the heat radiation amount to the vehicle interior I is larger than before. Become. Therefore, the electric heating pad 1 of this Embodiment can improve heating efficiency.

  Furthermore, since the electric heating pad 1 according to the present embodiment reflects the heat 2b received by the low heat radiating body 4 and radiates it to the vehicle interior I, the electric heating pad 1 enters the vehicle interior as compared with the case where a low heat radiating body having a low reflectance is used. The amount of heat dissipation increases. Therefore, the electric heating pad 1 of the present embodiment can further increase the heating efficiency.

  In the present embodiment, the low heat radiating body 4 is made of a material having a high heat reflectivity. However, the low heat radiating body is at least made of a material having a lower heat emissivity than that of the high heat radiating body 3. It ’s fine. Even with the electric heating pad configured as described above, since the heat radiation to the vehicle body side is suppressed, the heating efficiency can be improved as compared with the conventional case.

  Further, the electrothermal pad 1 of the present embodiment is configured such that the high heat radiating body 3 is brought into close contact with the surface 211 of the heat generating body 2 so that a gap S is formed between the low heat radiating body 4 and the back surface 222 of the heat generating body 2. did. Thereby, since the high heat radiating body 3 becomes easy to receive heat from the heat generating body 2, the heat radiation amount to the vehicle interior I is further increased. Therefore, the electric heating pad 1 of the present embodiment can further increase the heating efficiency.

  Further, the electric heating pad 1 of the present embodiment is configured such that the high heat radiating body 3 covers the heat generating body 2. Thereby, compared with the case where the high heat radiating body does not cover the heat generating body 2, the area that the high heat radiating body 3 receives from the heat generating body 2 is increased, so that the heat radiation amount to the vehicle interior I is increased. Therefore, the electric heating pad 1 of the present embodiment can further increase the heating efficiency.

  Further, in the electrothermal pad 1 of the present embodiment, the low thermal conductive material 5 is interposed between each fixing means 6 and the low heat radiating body 4. Thereby, it is suppressed that a heat | fever moves from the low heat radiator 4 to the vehicle body side (floor carpet 106). Therefore, the electrothermal pad 1 of the present embodiment can prevent useless heat loss.

  Moreover, the electric heating pad 1 of this Embodiment comprised the electric heater for vehicles of this invention as a thin electric heating pad which has flexibility. Thus, even when the left and right side portions 106b of the floor carpet 106 are bent when the electric heating pad 1 is installed, the electric heating pad 1 is applied to the portion 106b by changing the shape by bending according to the shape of the left and right side portions 106b. Can be installed in close contact. Therefore, the electric heating pad 1 of this Embodiment can prevent the space of the vehicle interior I becoming narrow.

  Furthermore, in the electric heating pad 1 of the present embodiment, each fixing means 6 is configured to be detachable from the vehicle body (floor carpet 106). Thereby, this electric heating pad 1 can change an installation position freely by a user's liking. Therefore, the electrothermal pad 1 of the present embodiment can improve usability. In addition, in this Embodiment, although the electrothermal pad 1 was installed in the right-and-left side part 106b of the floor carpet 106, you may install in the back surface of a seat, for example.

  As mentioned above, although embodiment concerning this invention was illustrated, this embodiment does not limit the content of this invention. Various modifications can be made without departing from the scope of the claims of the present invention.

  As described above, the electric heater for vehicles of the present invention can increase the heating efficiency. Therefore, the electric heater for vehicles of this invention can fully be utilized in the technical field of the electric heater for vehicles.

It is a principal part schematic sectional drawing of the backseat side of the vehicle which shows one embodiment of this invention. It is a model longitudinal cross-sectional view of the electric heating pad which shows the embodiment. It is a model longitudinal cross-sectional view of the electric heating pad at the time of use which shows the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric heating pad 2 Heat generating body 3 High heat sink 4 Low heat sink 5 Low heat conductive material 6 Fixing means 31 High heat sink surface 33 High heat sink peripheral part 42 Low heat sink back surface 106b Left and right side parts of floor carpet 211 Heat generating element Surface 222 Heating element back surface I Vehicle interior S Clearance

Claims (5)

An electric heating element, a high heat dissipation element provided on the surface side of the heating element, a low heat dissipation element provided on the back surface side of the heating element, and a back surface side of the low heat dissipation element. A vehicle electric heater comprising a fixing means,
The high heat radiator is made of a material having a higher heat emissivity than the low heat radiator, and is provided in close contact with the surface of the heat generator, and the surface of the high heat radiator is fixed to the vehicle interior. Attached to the car body by means ,
The low heat dissipation body is configured using a material having a low thermal emissivity than the high heat dissipation body and a high thermal reflectance, and a gap is formed between the heat generating element and the back surface of the heating element. An electric heater for a vehicle, which is provided on the back side . 2. The electric heating for vehicles according to claim 1, wherein the high heat radiating body covers the heating element, and in this state, a peripheral portion is bent to the back side and fixed to the back surface of the heating element. vessel. 3. A low heat conductive material is interposed between the fixing means and the low heat radiating body, and the low heat conductive material has a lower thermal conductivity than the low heat radiating material. The electric heater for vehicles as described in. The electric heater for a vehicle according to any one of claims 1 to 3, wherein the fixing means is configured to be detachable from the vehicle body . The electric heater for a vehicle according to any one of claims 1 to 4, wherein the electric heater is a thin electric heating pad having flexibility .

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