JP6364690B1 - Heater device - Google Patents

Abstract

A heater device capable of preventing a cold draft is provided. A heating element that generates heat when energized, and a case for storing the heating element over its entire length, the case being arranged to sandwich the heating element over its entire length. A bottom part that covers the lower part of the heating element over its entire length, and at least one of the pair of wall parts, an intake port provided at a position below the lower end of the heating element, A warm air outlet provided at a position above the upper end of the heating element in the case; and a wind guide part provided in the case for guiding the air taken into the case from the inlet to the heating element side. Heater device provided. [Selection] Figure 1

Description

  The present invention relates to a heater device.

  Patent Documents 1 and 2 disclose a heater device for a window which is installed along a glass surface at a lower part of a window glass in a building to prevent a cold draft or prevent dew condensation on the window. A cold draft is a room in a building with a window, and when it is heated in the winter when the outside air temperature is low, cold air that is cooled by outside air near the window (cold air) moves from the window side toward the center of the room. This is a phenomenon that flows under the room along the floor of the room.

  Patent Document 1 discloses a heater device for a window that prevents a cold draft, and a plurality of metal plates disposed between a pair of plate-like heating wire storage portions in which heating wires are incorporated and opposing heating wire storage portions. What is provided with the thermal radiation part which consists of and the rectangular parallelepiped case which accommodates these is disclosed. The case includes a pair of side wall portions (a case made of a wooden flat plate in Patent Document 1) sandwiching both heating wire storage portions, an upper cover made of a flat plate having a plurality of openings, a lower cover made of a flat plate, A pair of side covers disposed at both ends of the heating wire storage unit and legs projecting from the lower cover are provided.

  In Patent Document 2, as a heater device for preventing dew condensation, a plurality of band plate-like heating elements are arranged in parallel so that the front and back surfaces of each band plate are parallel to each other, and both ends thereof are formed into a portable frame. An assembly of fixed heating elements is disclosed. In this heater device, one opening formed by adjacent heating elements is an air inlet, and the other opening is a hot air outlet. The heater device has a predetermined lower space between the lower end of the heating element and the surface on which the heater device is installed in the room (eg, floor surface, hereinafter sometimes referred to as indoor installation surface). Is introduced.

JP 2005-172310 A Japanese Patent Application Laid-Open No. 2003-106677

  In the above-described conventional heater device, it is considered that cold air from the window side may flow out toward the central portion of the room over the heater device. Therefore, in the above-described conventional apparatus, there is a demand for a heater apparatus that has a small effect of making it difficult for indoor occupants to feel cold, and can more reliably prevent cold drafts.

  In the heater device of Patent Document 1, only the upper cover is open, and the air (cold air) inlet and the warm air outlet are the same. For this reason, it is considered that the cool air cannot be efficiently introduced into the case, and the cool air flows out from above the heater device toward the center of the room. Moreover, the heater apparatus of patent document 1 is installed in the state which has the clearance gap according to the length of the leg of a case between a lower cover and an indoor installation surface. It is considered that cold air may flow out from the lower side of the heater device toward the center of the room using this gap.

  Since the heater device of Patent Document 2 is also installed indoors with the above-mentioned lower interval, it is considered that cold air may flow out from the lower side of the heater device toward the center of the room using the lower interval. It is done.

  Accordingly, an object of the present invention is to provide a heater device that can prevent a cold draft.

The heater device of the present disclosure includes:
A heating element that generates heat when energized;
A case for storing the heating element over its entire length;
The case is
A pair of walls arranged to sandwich the heating element over its entire length;
A bottom portion covering the entire length of the lower portion of the heating element;
An air inlet provided at a position below the lower end of the heating element in at least one of the pair of wall portions; and
A warm air outlet provided at a position above the upper end of the heating element in the case;
And an air guide portion that is provided in the case and guides air taken into the case from the intake port toward the heating element.

  The above heater device can prevent a cold draft.

It is a schematic perspective view which shows typically the heater apparatus of Embodiment 1. FIG. It is the cross-sectional view which cut | disconnected the heater apparatus of Embodiment 1 by the (II)-(II) cutting line shown in FIG. It is explanatory drawing explaining the use condition of the heater apparatus of Embodiment 1. FIG. It is a schematic front view which shows the heater apparatus of Embodiment 2 typically. It is a functional block diagram centering on the control part with which the heater apparatus of Embodiment 2 is equipped.

[Description of Embodiment of the Present Invention]
First, embodiments of the present invention will be listed and described.
(1) A heater device according to an aspect of the present invention includes:
A heating element that generates heat when energized;
A case for storing the heating element over its entire length;
The case is
A pair of walls arranged to sandwich the heating element over its entire length;
A bottom portion covering the entire length of the lower portion of the heating element;
An air inlet provided at a position below the lower end of the heating element in at least one of the pair of wall portions; and
A warm air outlet provided at a position above the upper end of the heating element in the case;
And an air guide portion that is provided in the case and guides air taken into the case from the intake port toward the heating element.

  In the above heater device, the sides of the heating elements are respectively covered by the pair of wall portions constituting the case, and the lower part is covered by the bottom. Further, in this heater device, the case has an opening below the lower end of the heating element, and has an opening above the upper end of the heating element. That is, this case is provided with an intake port on the lower side and a warm air discharge port on the upper side while preventing the heating element from being substantially exposed. In the above heater device provided with a case having such a specific shape, when the wall portion provided with the air inlet is installed facing the window portion side, the so-called chimney effect causes low-temperature air (cold air) from the window portion side. Can be efficiently and automatically sucked into the case from the air inlet. Specifically, since the air heated by the heating element in the case has a relatively small density, a density difference occurs in the air in the case, and an upward flow is generated by the density difference. As a result, a pressure difference is generated between the inside of the case and the outside of the case, and the above-described cold air is taken into the relatively low-pressure case from the air intake port below the case. The cold air taken into the case is heated by the heating element and rises. Repeat the above events.

  In particular, since the heater device described above includes a wind guide portion, the cold air introduced into the case from the intake port flows upward along the wind guide portion toward the heat generator side when coming into contact with the wind guide portion. Is heated to become warm air and discharged from the warm air discharge port. Since warm air mainly flows upward in the room, it is possible to generate an air flow (convection) in which cool air that flows downward and warm air that flows upward circulate. In this way, the above heater device can prevent a cold draft. Furthermore, the flow direction of the cool air introduced into the case is restricted to the heat generating element side by the air guide portion, and is prevented from flowing out of the case at a low temperature without being heated by the heat generating element. In other words, the air guide part also functions as a member for inhibiting the outflow of the cool air to the outside of the case. Therefore, the above-mentioned heater device provided with a wind guide portion in the case can prevent cold draft more reliably than the above-described conventional heater device, and is expected to have a great effect of making it difficult for indoor residents to feel cold.

  Moreover, since the above-mentioned heater device can directly warm the window portion by the warm air discharged from above the case, it is possible to prevent condensation from occurring due to the temperature at the window being below the dew point even when the indoor humidity is high.

(2) As an example of the above heater device,
Examples of the pair of wall portions include a configuration in which the distance between the two wall portions is narrowed from the lower end side toward the upper end side.

  In the said form, the volume of a case becomes small toward the warm air discharge port side from an inlet port side, and it is easy to raise the flow velocity of warm air. It is expected that the warm air strikes the ceiling vigorously and flows downward along the indoor wall from the ceiling, so that the cold air from the window side is encouraged to flow downward to easily cause the above-described convection. Moreover, the said form has a triangular prism-shaped external appearance, is stylish compared with the case where it has the rectangular parallelepiped external appearance described in patent documents 1 and 2, and is excellent in design property.

(3) As an example of the above heater device,
The height position of the upper edge of the intake port is in the range of 5% to 20% of the height of the case from the installation surface of the heater device,
The form of the height position of the shaft of the heating element is in the range of 30% to 70% of the height of the case from the installation surface.

  The above-mentioned form is not too high and not too low from the indoor installation surface of the heating element, and the opening area of the intake port is not too small and is not too large, and can be secured appropriately, while being below the case Properly located. Therefore, the said form can absorb cold well, can form warm air well, and can prevent a cold draft more reliably.

(4) As an example of the above heater device,
The said wind guide part includes the form containing the inclination part which inclines upwards toward the upper end edge arrange | positioned at the said heat generating body side from the lower end edge arrange | positioned at the said inlet side.

  In the above-described form, the cool air from the air inlet is smoothly flowed along the inclined portion toward the heat generating element, so that it is easy to reduce the pressure loss due to the contact with the air guide portion, and it is easy to increase the cool air suction capability. Therefore, the said form can prevent a cold draft more reliably.

(5) As an example of the above heater device,
Each of the pair of wall portions includes the intake port,
The said wind guide part has the form provided overlapping with the formation area of the said air inlet in each wall part.
“The wind guide portion is provided overlapping with the area where the air inlet is formed in each wall” means that when the air inlet is seen through in the width direction of the case, the outer shape of the air guide portion is the air inlet in the wall. It overlaps with the formation area of (or coincides with or is larger than the formation area of the intake port). The width direction of the case here refers to a direction orthogonal to the longitudinal direction of the case and directed from one wall portion to the other wall portion.

  Since the said form is provided with an inlet in each wall part, even if it installs any wall part toward a window part side, a cold draft prevention effect will be acquired. Such an embodiment does not require the use of a cord or the like connected to the heating element, has a high degree of freedom in selecting the installation state, and is easy to use in this respect. Moreover, the said form can suck | inhale cold air in a case even if it installs which air inlet is facing a window part side. And since the said form is provided with a baffle part in the formation area of each inlet port, the cold air introduced from the inlet port on the window side is not heated by the heating element and remains at a low temperature, opposite to the window part Can be prevented from flowing out of the case through the side inlet. Therefore, the said form can prevent a cold draft more reliably.

(6) As an example of the above heater device provided with inlets on both walls,
In a cross section obtained by cutting the case along a plane perpendicular to the longitudinal direction, the pair of wall portions may have a line-symmetric outer shape.

  In the above configuration, the specifications (size, shape, formation position, etc.) of the intake port and the warm air discharge port in both wall portions are the same, so even if any wall portion is installed facing the window side, the intake of cold air It is easy to equalize the amount and the amount of warm air discharged, and it is easy to obtain the effect of preventing cold drafts as well. Moreover, since the case has a line-symmetric outer shape, the above-described form can have the same appearance even if any wall portion is installed toward the center of the room, and is excellent in design in this respect. Furthermore, the case tends to have a simple outer shape, and is excellent in manufacturability.

(7) As an example of the above heater device in which the outer shape of the case is line symmetric,
In the cross section, the air guide part may have a line-symmetric outer shape.

  In the above-mentioned form, the internal shape of the case is also a line symmetrical shape, so that even if any wall portion is installed facing the window side, the air inlet and the air guide portion are arranged in the same manner to prevent the cold draft. Is obtained as well. In this respect, the above form is excellent in convenience. In addition, the case is likely to have a simpler shape and is excellent in manufacturability.

(8) As an example of the above heater device,
The said wind guide part has the form which serves as the said bottom part.

  The said form has few parts of a case, can be made lightweight, and is easy to utilize at this point. When the wind guide portion includes the above-described inclined portion, a gap corresponding to the inclination of the inclined portion is provided between the bottom portion of the case and the indoor installation surface, so that dew condensation water is present between the bottom portion of the case and the indoor installation surface. It is easy to avoid problems such as accumulation.

(9) As an example of the above heater device,
An illuminance sensor;
And a control unit that adjusts the output of the heating element based on information from the illuminance sensor.
“Adjusting the output of the heating element” includes increasing or decreasing the output of the heating element from the current value, maintaining the current value as it is, stopping the output, and the like.

  Here, it has been found that when sunlight hits the window part to some extent and the vicinity of the window part is warmed to some extent, it is difficult to generate cold air from the window part side toward the indoor central part side. Since the heater device such as the above (1) is installed and used near the window, power consumption can be reduced by measuring the illuminance near the window and adjusting the output of the heating element according to the illuminance level. it can. The above-mentioned form includes an illuminance sensor and a control unit, measures the illuminance from the window, and automatically adjusts the output of the heating element according to the illuminance, so that power consumption can be reduced and energy saving can be achieved. it can. Moreover, the said form does not require a user's complicated operation and is easy to use.

(10) As an example of a heater device including an illuminance sensor,
A temperature sensor for measuring at least one of a temperature of warm air discharged from the warm air discharge port and a temperature of air taken in from the intake port;
The said control part adjusts the output of the said heat generating body based on the information from the said illumination intensity sensor, and the information from the said temperature sensor.

  In addition to reducing power consumption and improving convenience as described above, the above-described form automatically generates a heating element according to the illuminance from the window and the temperature in the heater device (eg, warm air temperature or cold air temperature). Therefore, it is easy to adjust the temperature of the warm air to a more appropriate temperature.

(11) As an example of a heater device including an illuminance sensor,
The said control part measures the integrated amount of sunshine within predetermined measurement time, and when the said amount of integrated sunshine is more than a fixed value, the form controlled to make the output of the said heat generating body smaller than the present is mentioned.
“Making the output of the heating element smaller than the present” includes the case of stopping the output.

  Here, when sunlight hits the window part for a certain amount of time, the vicinity of the window part is warmed and the warmed state is maintained to some extent, and it is difficult to generate cold air from the window part side toward the center part of the room. I got the knowledge. In the above embodiment, the amount of sunlight measured by the illuminance sensor is integrated, and the output of the heating element is automatically adjusted according to the amount of integrated sunlight, so that power consumption can be reduced and energy saving can be achieved. Moreover, the said form does not require a user's complicated operation and is easy to use.

(12) As an example of the above heater device,
A form in which the heat generation amount of the heating element is less than 71.5 W / m can be mentioned. The amount of heat generated here is the amount of heat (W) per 1 m of the heating element.

  As described above, the heater device such as (1) can efficiently heat the cold air introduced into the case by bringing it into contact with the heating element. it can. Therefore, the said form can prevent a cold draft and contributes to energy saving.

[Details of the embodiment of the present invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the figure, the same reference numerals indicate the same names.

[Embodiment 1]
Hereinafter, the heater device 1 </ b> A according to the first embodiment will be described with reference to FIGS. 1 to 3. FIG. 2 is a cross-sectional view of the heater device 1A cut along a plane orthogonal to the longitudinal direction of the case 3 (also the axial direction of the heating element 2).

(Outline)
The heater device 1A according to the first embodiment is typically used by being installed near a window in a room having a window portion w (FIG. 3) (a detached house, an apartment house such as a condominium, various facilities, etc.). It is an elongated one (FIG. 1). This heater device 1A includes a heating element 2 that generates heat when energized, and a case 3 that houses the heating element 2 over its entire length. The case 3 includes a pair of wall portions 31 and 32 arranged so as to sandwich the heating element 2 over the entire length thereof (see also FIG. 2), and the lower part of the heating element 2 extends over the entire length of the heating element 2. And a bottom 33 for covering (same as above). Typically, the case 3 includes a top surface portion 34 that covers the top of the heating element 2, and wall portions 31, 32, a top surface portion 34, and a bottom portion 33 (hereinafter, these may be collectively referred to as a case main portion). The container includes an end plate 35 (only the left side is shown in FIG. 1 and the right end plate is omitted) covering the openings at both ends in the longitudinal direction, and the inside of the case 3 is used as a storage space for the heating element 2. . In the state where the heater device 1A is installed, the bottom 33 side is referred to as the lower side, and the top surface 34 side is referred to as the upper side. 1 to 3 show a state where the heater device 1A is installed, and the lower side of the drawing is the bottom 33 side.

  The case 3 further includes an opening (intake port 3i) for introducing cool air from the window w side into the case 3 below the case 3, and the introduced cool air is warmed by the heating element 2 to generate warm air. Is provided above the case 3 with an opening (warm air outlet 3o) for discharging the air to the outside of the case 3. The heater device 1A including the case 3 having such a specific shape generates a so-called chimney effect, and automatically cools air from the window portion w side into the case 3 by the intake port 3i disposed toward the window portion w side. Thus, the warm air warmed in the case 3 can be discharged from above the case 3. In particular, the heater device 1A according to the first embodiment is configured to direct the cold air introduced into the case 3 from the intake port 3i located below the case 3 so as to flow upward toward the heating element 2 (air guide section). 4). The heater device 1 </ b> A allows the cool air introduced into the case 3 to flow upward by the air guide portion 4 provided in the case 3, so that the heater device 1 </ b> A is easily brought into contact with the heat generator 2 to be warmed up. It is possible to effectively inhibit cold air that is not heated and flows out of the case 3. Details will be described below.

  In the following description, the length along the longitudinal direction of the case 3 is length, the direction orthogonal to the longitudinal direction of the case 3 and the direction from one wall portion 31 toward the other wall portion 32 is along the width direction and the width direction. The width is perpendicular to the longitudinal direction of the case 3, the direction from the bottom 33 toward the top surface 34 (the vertical direction when the heater device 1A is installed) is the height direction, and the size along the height direction is high. Call it. The bisector of the maximum width in case 3 (here, the width W of the bottom 33, FIG. 2) is referred to as a center line C (FIG. 2).

(Heating element)
The heating element 2 is desirably arranged along the length direction of the window portion w, and a rod-shaped electric heater that is somewhat long corresponding to the length of the window portion w can be suitably used. The heating element 2 of this example is a sheathed heater in which a heating wire such as a nichrome wire and an insulating powder such as MgO are housed in a cylindrical pipe, and both ends form portions supported by the case 3. A known sheathed heater can be used. Moreover, in this example, the fin part 22 which protrudes in a radial direction from the outer peripheral surface of the said pipe is provided. In this example, the strip-like fin portion 22 is provided so as to draw a spiral on the outer periphery of the pipe. The heating element 2 provided with such a fin portion 22 has a round bar shape as a whole. In FIG. 1, a part of the fin portion 22 is shown in a spiral shape, and the remaining portion is simplified and shown in a cylindrical shape. 2-4, the fin part 22 is simplified and shown in circular shape or a column shape. As the other heating element 2, for example, a known electric heater using a mixture containing carbon fiber, conductive powder and resin or rubber may be used. An electric heater or the like provided in a strip shape may be used.

  The amount of heat generated by the heating element 2 can be selected as appropriate. Although it is considered that the heating rate of the cold air is increased and the temperature of the warm air is more easily increased as the amount of heat generated is larger, the power consumption is increased, and thus the electricity bill is increased. 1 A of heater apparatuses of Embodiment 1 are provided with the case 3 which makes it easy to contact cold air with the heat generating body 2 while having a chimney effect as mentioned above, and can heat cold air efficiently. Therefore, as the heating element 2, one having a heat generation amount smaller than that conventionally required for the prevention of cold draft can be used. For example, the heating element 2 having a calorific value of less than 71.5 W / m can be used. Since the power consumption can be reduced as the heat generation amount is smaller, the heat generation amount can be 65 W / m or less, and further 60 W / m or less. From the viewpoint of more sure prevention of cold draft, although it depends on the size of the case 3 and the like, the heat generation amount of the heating element 2 can be 30 W / m or more, further 50 W / m or more.

  The number of heating elements 2 can be selected as appropriate. Since the heater device 1A according to the first embodiment has a high heating efficiency of the cold air as described above, the number of the heating elements 2 may be small, and is one in this example. The heating element 2 of this example is arranged in the case 3 so that the axis of the heating element 2 is orthogonal to the center line C in the width direction of the case 3 as shown in FIG. They are arranged in line symmetry. Note that the number of the heating elements 2 may be plural. For example, it can also be an assembly (eg, Patent Documents 1 and 2) in which a plurality of band plate-like heating elements are spaced apart and arranged in parallel so that the front and back surfaces of each band plate are parallel (for example, described later). (Refer to Modification (1)).

  The length of the heating element 2 is preferably long to some extent as described above. For example, the length of the standard length of the window portion w is 0.5 times or more, further 0.7 times or more, 0.75 times or more, 0.8 It is mentioned that it is more than twice. The length of the heating element 2 can be set to be approximately equal to the standard length of the window portion w. The diameter of the heating element 2 and the outer diameter d (FIG. 2) of the fin portion 22 can be selected as appropriate.

  In addition, a cord 39 that supplies commercial power from a power source (not shown) is connected to the heating element 2. If the cord 39 is provided with a switch (not shown), the user can easily start and stop energization of the heating element 2. Known codes 39 and switches can be used. A switch can also be provided in the case 3. When the heater device 1A is used, the plug at the tip of the cord 39 is inserted into an indoor outlet (not shown) so that power can be supplied from the power source to the heating element 2.

  Further, as illustrated in FIG. 2, in order to improve the thermal insulation between the heating element 2 and the case 3, it is formed of a material having heat resistance and low thermal conductivity, for example, a non-metallic material such as a heat resistant resin. The heat insulation part 24 made can be provided. The heat insulating portion 24 in this example is an annular body having an inner diameter through which the fin portion 22 can be inserted, and is disposed at an appropriate position in the longitudinal direction of the heating element 2. The number of the heat insulating parts 24 may be one or plural. If the intervals between the wall portions 31 and 32 and the bottom portion 33 of the case 3 and the heating element 2 are adjusted, the heat insulating portion 24 may be omitted.

(Case)
<Overall configuration>
The case 3 includes a bottom portion 33 disposed on the indoor installation surface side, wall portions 31 and 32 disposed so as to be erected from the bottom portion 33, and a top surface portion 34 disposed so as to face the bottom portion 33. It is an elongate container provided. Furthermore, the case 3 has an opening at a predetermined position and includes an air guide portion 4. Specifically, the case 3 includes an air inlet 3i provided at a position lower than the lower end of the heating element 2 in at least one of the pair of wall portions 31 and 32, and an upper end of the heating element 2 in the case 3. Also provided with a warm air discharge port 3o provided at an upper position and an air guide portion 4 provided in the case 3 and guiding air (cold air) taken into the case 3 from the intake port 3i to the heating element 2 side ( (See also FIG. 2).

  In this example, the pair of wall portions 31 and 32 are arranged so that the distance between the wall portions 31 and 32 becomes narrower from the lower end side toward the upper end side. Therefore, the case 3 has a triangular prism-like appearance over its entire length as shown in FIG. The pair of wall portions 31 and 32 are respectively provided with intake ports 3i and 3i and also with warm air discharge ports 3o and 3o, and as shown in FIG. Have In this example, the lower end edge of the wall portions 31 and 32 forms an upper end edge among the opening edges of the intake ports 3i and 3i, and the upper end edge of the wall portions 31 and 32 is an opening of each warm air discharge port 3o and 3o. Of the edges, it forms the lower edge.

  Further, in this example, the air guide portions 4 and 4 are provided to overlap the formation regions of the air inlets 3i and 3i in the respective wall portions 31 and 32, and in the cross section of the case 3 as shown in FIG. The wind portions 4 and 4 have a line-symmetric outer shape with the center line C as an axis. Each of the air guide portions 4 and 4 includes inclined portions 332 and 332 that are inclined upward from a lower end edge disposed on the intake port 3i side toward an upper end edge disposed on the heating element 2 side, and also serves as the bottom portion 33. .

  The shape of the case 3 has a size that can accommodate the entire length of the heating element 2 and can be changed within a range having a chimney effect (see, for example, modified examples (2) to (9) described later).

<Wall>
As shown in FIGS. 1 and 2, each of the wall portions 31 and 32 in this example is mainly made of a horizontally long rectangular plate. Each wall part 31 and 32 is arrange | positioned so that the side part of the rod-shaped heat generating body 2 may be pinched | interposed in the intermediate part away from the lower end edge and upper end edge of these board | plate materials. The lower end edge of each of the wall portions 31 and 32 is not continuous with the bottom portion 33 (here, an installation surface portion 330 described later), and a predetermined gap is provided between the bottom portion 33 and the edge of the bottom portion 33. Each gap forms intake ports 3i and 3i that open to the walls 31 and 32. The upper end edges of the wall portions 31 and 32 are not continuous with the top surface portion 34, and a predetermined gap is provided between the edges of the top surface portion 34. Each gap forms warm air outlets 3o, 3o that open to the walls 31, 32.

  The wall portions 31 and 32 in this example are not arranged in parallel, and are inclined so that the upper end edges of both wall portions 31 and 32 approach and the lower end edges separate as shown in FIG. With this arrangement, the interval between the wall portions 31 and 32 is continuously narrowed from the lower end side toward the upper end side, so that it is easy to increase the flow rate of warm air. This warm air is expected to cause convection between cold air flowing downward and warm air flowing upward as will be described later. Moreover, such a case 3 has a stylish appearance of a triangular prism shape and is excellent in design.

  The inclination angle with respect to the center line C or the installation surface part 330 in each wall part 31 and 32 can be varied. In this example, the inclination angles of the both wall portions 31 and 32 are substantially equal, and the wall portions 31 and 32 are provided symmetrically about the center line C in the cross section of the case 3. Therefore, the size (opening area, etc.), shape, and formation position of the air inlet 3i and the warm air outlet 3o provided in each of the walls 31 and 32 are the same. Such a heater device 1A makes it easy to equalize the amount of cold air intake and the amount of warm air discharged, regardless of which wall portions 31 and 32 are installed toward the window portion w side, and similarly obtain a cold draft prevention effect. easy. In addition, by having a line-symmetric outer shape, even when any of the wall portions 31 and 32 is installed on the side opposite to the window portion w (inside the central portion of the room), the same appearance can be obtained. Excellent design properties. Furthermore, the case 3 having a line-symmetric outer shape tends to be a simple outer shape, and is excellent in the manufacturability of the case 3.

In particular, the walls 31 and 32 in this example are provided so that the cross-sectional shape of the case 3 is a vertically long isosceles triangle (FIG. 2). Here, the height of the isosceles triangle is 1.5 times or more, and further 1.8 times or more larger than the base. The walls 31 and 32 may be constructed of a flat plate material so as to have a flat outer shape, but have a relatively large bending radius (for example, 8 times to 15 times the height H ₃ of the case 3 as in this example). It can be constructed so as to have an outer shape having a smooth curved surface by using an arc-shaped plate material that protrudes toward the inside of the case 3. The circular arc plate members are arranged so that virtual extension lines extending from the upper end portion thereof intersect. It is considered that the warm air flow toward the warm air discharge port 3o above the case 3 is easily smoothed and the pressure loss is easily reduced by being along the arc-shaped wall portions 31 and 32. Note that the height H ₃ of the case 3, where is the distance from the setting surface section 330 to the highest point of the top face portion 34.

<Bottom part and wind guide part>
The bottom 33 of this example has a pointed hat shape in cross section as shown in FIG. 2, and a shape obtained by bending a horizontally long rectangular plate material into a mountain shape as shown in FIG. Specifically, the bottom 33 crosses the installation surface 330 and the installation surface 330 (or the indoor installation surface) arranged so as to be parallel to the indoor installation surface, and is arranged on the inlet 3i side. And an inclined portion 332 that is inclined upward from the lower end edge connected to the surface portion 330 toward the upper end edge disposed on the heating element 2 side. The bottom 33 is provided symmetrically about the center line C in the cross section of the case 3. The intersection of the upper edge of both inclined parts 332 and 332 forms the peak of a mountain and is located on the center line C. The edge of the installation surface portion 330 forms the lower edge of the opening edges of the intake ports 3i, 3i.

  Of the inclined portions 332 and 332, one inclined portion 332 facing the one wall portion 31 generates heat from the inner surface of the one installation surface portion 330 through the cold air introduced into the case 3 from the air inlet 3 i of the wall portion 31. It has a function of raising toward the body 2 side. Similarly, the other inclined portion 332 facing the other wall portion 32 causes the cold air introduced into the case 3 from the air inlet 3i of the wall portion 32 toward the heating element 2 side from the inner surface of the other installation surface portion 330. Has the function to raise. That is, the inclined portion 332 functions as the air guide portion 4. Here, the air guide portion 4 can be, for example, a vertical wall erected so as to be orthogonal to the installation surface portion 330. In this case, when the cold air hits the vertical wall, the flow velocity of the cold air decreases, that is, the pressure loss increases, the cold air suction ability decreases, and the cold draft preventing effect may be reduced. On the other hand, when the air guide portion 4 includes the inclined portion 332, the cold air introduced into the case 3 tends to flow smoothly toward the heating element 2 side, and the above-described pressure loss is reduced and the cold air suction capability is increased. easy. As a result, it is easy to prevent a cold draft. In addition, the air guide portion 4 that restricts the flow direction of the cold air upwards also functions as an inhibiting member that prevents the cold air from flowing out of the case 3 at a low temperature without contacting the heating element 2. In this example, the cold air introduced from the air inlet 3i of the wall portion, for example, the wall portion 31 on the window portion w side is changed to the wall portion, for example, the wall portion 32 of the wall portion 32 on the opposite side of the window portion w side. Outflow from the intake port 3i to the outside of the case 3 can be prevented. The same applies to the case where the wall portion 32 is disposed on the window portion w side and the wall portion 31 is disposed on the side opposite to the window portion w side (FIG. 3). Also from this, the heater device 1 </ b> A including the air guide portion 4 can more reliably prevent the cold draft.

  The inclination angle θ of the inclined portion 332 with respect to the installation surface portion 330 (or the indoor installation surface) can be appropriately selected within a range of less than 90 °. As the inclination angle θ approaches 90 °, the wall becomes closer to the vertical wall and the above-described pressure loss is likely to increase, and as it approaches 0 °, the above-described effect of restricting upward becomes difficult to obtain. The inclination angle θ depends on the outer dimension of the case 3, the outer dimension of the heating element 2, the outer diameter d of the fin portion 22, and the like, for example, about 40 ° to 75 °, and further about 45 ° to 70 °. Can be mentioned.

It is preferable that the air guide portion 4 is provided to overlap the formation region of the air inlet 3i in the wall portion (here, the wall portions 31 and 32) where the air inlet 3i is provided. In this example, when the formation regions of the air inlets 3i and 3i in the wall portions 31 and 32 are seen in the width direction of the case 3 toward the air guide portions 4 and 4, the outer shape of the air guide portions 4 and 4 is as follows. It is sufficiently larger than the formation area of the intake ports 3i, 3i. Specifically, the length of the air guide portion 4 is substantially equal to the length of the formation region of the intake port 3i, and the height H ₄ (FIG. 2) of the air guide portion 4 exceeds the upper end position of the formation region of the intake port 3i. (See also right region in FIG. 4). The upper end portion of the air guide portion 4 is positioned lower than the lower end edge of the heating element 2 and is positioned sufficiently higher than the upper end portion of the intake port 3i (FIG. 2). Therefore, the cold air introduced from one wall portion arranged on the window portion w side, for example, the air inlet 3i of the wall portion 31 in FIG. 2, moves up the air guide portion 4 (the inclined portion 332) near the wall portion 31. Thus, it is easy to continue to rise from the upper end portion of the air guide portion 4 toward the heating element 2 which is a relatively high temperature and low density region. Since the region on the side of the inclined portion 332 near the other wall portion 32 is a relatively low-temperature and high-density region, the cold air hardly falls along the inclined portion 332 near the other wall portion 32. As in this example, by providing the air guide portion 4 corresponding to the entire length of the air intake port 3i, the air guide portion 4 on the window portion w side has the cold air introduced into the case 3 on the side opposite to the window portion w. It is possible to prevent outflow from the intake port 3i on the side opposite to the window portion w through the inclined portion 332.

  Furthermore, since the air guide portion 4 of this example also serves as the bottom portion 33, the number of parts of the case 3 can be reduced and the weight can be reduced. Further, in this example, a triangular prism-shaped gap corresponding to the mountain-shaped air guide portions 4 and 4 is provided between the bottom portion 33 and the indoor installation surface, and the bottom portion 33 is partially raised. This gap makes it easy to avoid problems such as the accumulation of condensed water between the bottom 33 and the indoor installation surface. The width of the installation surface portion 330 can be selected as appropriate within a range in which the inclined portion 332 forming the air guide portion 4 is appropriately provided. The installation surface portion 330 can also be omitted (see a modification example (6) described later). In addition, the bottom 33 can be constructed of a flat plate material or the like and provided with the above-described mountain-shaped air guides 4 and 4 separately from the bottom 33 and can be fixed to the bottom 33.

  In addition, the bottom 33 of this example includes a pedestal portion 334 that supports the above-described heat insulating portion 24 (FIG. 2). The pedestal portion 334 is a member having an arc-shaped outer peripheral surface corresponding to the outer periphery of the annular heat insulating portion 24, and is provided at the intersection of the upper end edges of both inclined portions 332, 332, and both sides of the arc piece are the intersection points It protrudes from the portion in the width direction of the case 3. If the heat insulating part 24 can be supported, the amount of protrusion from the intersection part in the pedestal part 334 may be small, and it may be adjusted within a range that does not impede the flow of cold air toward the heating element 2 side.

<Top part>
As shown in FIGS. 1 and 2, the top surface portion 34 in this example has a shape that is obtained by bending an elongated rectangular plate material into an arc shape. The top surface portion 34 is disposed so as to be separated from the upper end edges of the both wall portions 31 and 32 and is disposed so as to cover the upper space between the both wall portions 31 and 32 (FIG. 2). Each edge of the top surface portion 34 forms an upper edge among the opening edges of the warm air outlets 3o, 3o.

  In this example, as shown in FIG. 2, the width of the top surface portion 34 is adjusted so as to slightly protrude in the width direction of the case 3 from the upper end edges of the wall portions 31 and 32. Therefore, when the case 3 is viewed from above, the inside of the case 3 is hidden behind the top surface portion 34 and cannot be seen. With this configuration, it is easy to prevent dust and foreign matter from entering the case 3 from above the case 3.

<Inlet and warm air outlet>
In this example, as described above, the wall portions 31 and 32 are provided with the intake ports 3i and 3i and the warm air discharge ports 3o and 3o, respectively. Therefore, no matter which wall portion 31 or 32 is installed toward the window portion w side, the intake port 3i and the warm air discharge port 3o may be opened obliquely upward or laterally toward the window portion w side. it can. Although the specifications (size, shape, forming position, etc.) of the intake ports 3i, 3i provided in the respective walls 31, 32 and the specifications of the warm air discharge ports 3o, 3o can be made different, both walls as in this example. If the portions 31 and 32 have a line-symmetric shape and the specifications of the intake ports 3i and 3i and the specifications of the warm air discharge ports 3o and 3o are equal, it is easy to obtain the cold draft prevention effect and appearance as described above.

  Each of the intake ports 3i, 3i and each of the warm air discharge ports 3o, 3o in this example is a horizontally-long rectangular through hole that is continuous in the longitudinal direction of the case 3 and reaches the entire length of the wall portions 31, 32. Such an intake port 3i and a warm air discharge port 3o are likely to have a large opening area with respect to the size of the window portion w, and it is easy to ensure a large amount of cold air intake and a large amount of warm air discharge. In addition, it can replace with one continuous through-hole, and can be set as the small hole group which collected the several small through-hole (refer the below-mentioned modification (8)).

  The size of the intake port 3i and the warm air discharge port 3o (the total size in the case of a small hole group) depends on the amount of heat generated by the heating element 2, the height position of the heating element 2, the outer size of the case 3, etc. However, for example, the lengths of the intake port 3i and the warm air discharge port 3o are equal to or longer than the entire length of the heating element 2. In this case, it is easy to secure a large amount of cold air and a large amount of warm air. Although the length of the intake port 3i and the warm air discharge port 3o can be shorter than the entire length of the heating element 2, warm air is formed when the length is 50% or more, further 60% or more, and 70% or more of the entire length of the heating element 2. It is easy to do and preferable.

Height Hi, height Ho of the hot air outlet 3o of the inlet 3i is possible (FIG. 2), for example, 5% or more 20% degree of the height _{H 3} of the casing 3, a degree further 8% to 18% or less Is mentioned. If the heights Hi and Ho are not too small, it is possible to appropriately secure the intake amount of cool air and the discharge amount of warm air, and if it is not too large, it is easy to form warm air and easily obtain the effect of preventing cold drafts. Moreover, the rigidity of the case 3 can be easily increased by not being too large.

  The size of the intake port 3i and the size of the warm air discharge port 3o can be different, but it is preferable that they are substantially equal. In the case of differentiating, for example, if the size of the warm air discharge port 3o is slightly smaller than the size of the intake port 3i, it is expected that the flow rate of the warm air can be easily increased.

  Since the lower end edge of the intake port 3i in this example is the edge of the installation surface portion 330, the intake port 3i can be disposed close to the indoor installation surface. Such a heater device 1 </ b> A can efficiently introduce cold air from the window portion w side, which has a relatively low density at a low temperature and easily flows downward, into the case 3.

<Size of each part>
Of the case 3, the wall portions 31 and 32, the bottom portion 33, and the top surface portion 34, which are the main portions of the case, have a length, a width, and a height that can accommodate the heating element 2 and the fin portion 22.

  The length of the above-mentioned case main part should just be more than the length of the heat generating body 2 like this example. If the length of the main part of the case is equal to the standard length of the window part w and further exceeds the standard length, the case 3 itself can prevent the cool air from the window part w side from flowing to the central part of the room.

The height position from the installation surface of the heater device 1A at the air inlet 3i (here, generally corresponding to the outer surface of the installation surface portion 330 of the bottom 33), and the height position from the installation surface of the heater device 1A in the heating element 2 are particularly Influencing cold air intake and warm air formation. For example, the height position of the upper edge of the inlet 3i is the like that from the installation surface of the heater device 1A to a height at least 5% to 20% range of H ₃ Case 3. If the height position not less than 5% of the height H _3, not too small opening area of the inlet 3i, suitably easily secured intake air amount of the cool air. As the height position is large, since the opening area of the inlet 3i greater can be secured, the height position 6% of the height H ₃ or more, further more than 7%, 8% or more, 10% or more it can. If the height position is 20% or less of the height H ₃ , the intake port 3 i is positioned below the case 3, and it is easy to secure a warm air formation region in the case 3. As the height position is small, since the formation area of the warm air can be largely ensured, the 19% of the height position of the height H ₃ or less, more than 18%, 17% or less, may be 15% or less.

For example, the height position of the axis of the heat generating element 2 (here corresponding to the height H ₂ is) is that there from the installation surface of the heater device 1A in the height range of 30% to 70% or less of H ₃ Case 3 Can be mentioned. If the height position more than 30% of the height H _3, not too low position of the heat generating element 2, since easily secured opening area of the inlet 3i, suitably easily secured intake air amount of the cool air. The higher the position is large, because it can secure a large opening area of the inlet 3i, the height position 32% of the height H ₃ or more, can be further 35% or more. If the height position is 70% or less of the height H ₃ , the heating element 2 is not too far from the indoor installation surface, and it is easy to secure a warm air formation region in the case 3. As the height position is small, since the formation area of the warm air can be largely ensured, the 65% of the height position of the height H ₃ or less, more than 60%, can be not more than 55%. The height position of the shaft of the heating element 2 satisfies the above-mentioned range, and the lower end position of the heating element 2 (here, the lower end position of the fin portion 22) is located above the height position of the upper end edge of the intake port 3i. As described above, the size of the heating element 2 may be adjusted.

  When both the above-described height position in the intake port 3i and the above-described height position in the axis of the heating element 2 satisfy the above-described range, the cool air can be sucked in well, the warm air can be formed well, and the chimney effect can be achieved. It is considered easy to obtain, and cold draft can be prevented more reliably.

If the height H ₃ of the case 3 is larger than the width W of the case 3 (H ₃ > W), for example, if the height H ₃ is 1.5 times the width W or more, the vertically long case 3 is likely to be formed. The chimney effect is more easily obtained and preferable. The width W in this example is larger than the outer diameter d of the fin portion 22. The height H ₃ of this example, 5 times 2 times the outer diameter d of the fin 22 or less, a further 4.5 times or less, the case 3 is not too high, on easy to carry, and fall hard.

  The smaller the distance between the heating element 2 and the inner surfaces of the wall portions 31 and 32, the easier it is to form the vertically long case 3, and the chimney effect is easily obtained as described above. When the interval is large to some extent, the thermal insulation between the heating element 2 and the wall portions 31 and 32 is enhanced, and it is easy to avoid the wall portions 31 and 32 from being heated excessively. In this example, since the fin portion 22 is interposed between the heating element 2 and the wall portions 31 and 32, it is easy to ensure a large interval. Moreover, in this example, since the above-mentioned thermal insulation is improved by providing the heat insulating portion 24, the distance between the fin portion 22 and the inner surfaces of the wall portions 31, 32 is set to the thickness of the heat insulating portion 24 as shown in FIG. To narrow. Even if it is narrow in this way, the cold air introduced into the case 3 flows along the fin portions 22 provided in a spiral shape and can contact the heating element 2, and the heated warm air is directed to the warm air outlet 3 o side. Can flow.

In the case of the triangular cylindrical case 3 as in this example, the cross-sectional area of the air flow path from one intake port 3i through the heating element 2 to one warm air discharge port 3o is the opening of the intake port 3i. It is considered that the chimney effect can be easily obtained by adjusting the size of each part of the main part of the case so as to be approximately equal to the area. As the size of each of the above parts, the opening area of the intake port 3i and the warm air discharge port 3o, the inclination angle of the air guide part 4 (inclined part 332), the diameter of the heating element 2, the outer diameter d of the fin part 22, and the heating element 2 The height H ₂ from the installation surface 330 (or the indoor installation surface), the inclination angles of the walls 31 and 32, the maximum width of the case 3 (the width W of the bottom 33), the height H ₃ of the case 3, and the like. .

<End plate and end cover>
The end plate 35 is a member that closes both ends in the longitudinal direction in the cylindrical body formed by the main part of the case as described above. By making the case 3 substantially closed by the end plate 35 and the main part of the case except for the intake port 3i and the warm air discharge port 3o, the heater device 1A introduces cold air into the case 3 and forms warm air. Can be performed efficiently.

  The end plate 35 in this example functions as a support body that supports the heating element 2 at a predetermined position of the case 3 and also functions as a connecting member that integrates the main part of the case. Each member of the main part of the case includes a mounting piece (not shown) provided with a fastening hole such as a bolt hole or a screw hole, and the end plate 35 includes a fastening hole (not shown). The end plate 35 and the main part of the case are integrated by overlapping the fastening hole of the mounting piece and the fastening hole of the end plate 35 and fastening a fastening member such as a bolt or a screw. Further, the end plate 35 includes a mounting portion (not shown) provided with a fixing hole for the heating element 2, and an end portion of the shaft portion of the heating element 2 is inserted into the fixing hole and fixed as appropriate. The rod-shaped heating element 2 is supported between the end plates 35 and 35. The end plate 35 is provided with a bottom surface portion (not shown) disposed on the indoor installation surface, and the end plate 35 and the bottom surface portion form a continuous L-shaped member. The end plate 35 has a vertically elongated isosceles triangle shape corresponding to the cross-sectional shape of the main part of the case, and the bottom surface portion has a rectangular shape.

  The case 3 in this example includes end covers 36 and 37 for storing the end plates 35. The basic configurations of the end covers 36 and 37 are the same, and include an outer end plate portion having an outer shape similar to the end plate 35 and a mountain-shaped peripheral wall portion surrounding a part of the outer end plate portion. By combining the peripheral wall portion and the bottom surface portion continuous with the above-described end plate 35, the end covers 36 and 37 form a vertically long isosceles triangular internal space. The internal space is a fall-off switch (refer to what is virtually indicated by a two-dot chain line in the end cover 37 in FIG. 4; FIG. 4 shows a state in which the operating protrusion protrudes) and various sensors (reference numerals in FIG. 4). 6), and can be used to house a connection portion between the cord 39 and the heating element 2 and the control unit 5 (see the end cover 36 in FIG. 4). Although the end covers 36 and 37 can be omitted and only the end plate 35 can be provided, when the end covers 36 and 37 are provided and the above-described connection locations are accommodated, the appearance is excellent and the design is improved. In addition, it is good to provide a through-hole and a notch in the extraction | drawer location of the cord 39 in an outer end plate part.

  The end plate 35 and the end covers 36 and 37 may be integrated by the above-described fastening member or the like. When the end plate 35 and the end covers 36 and 37 are provided with engaging portions that engage with each other, or the end covers 36 and 37 are provided with a recess or the like into which the vicinity of the edge of the main part of the case is inserted, the case 3 Are more easily maintained in an integrated state.

<Constituent materials>
Examples of the constituent material of the case 3 typically include aluminum and its alloys, metals such as iron-based materials such as steel and stainless steel, and non-metals such as resins. The metal case 3 is excellent in heat resistance and strength. The resin case 3 is easy to make lightweight. In this example, the case main part is made of metal and the end covers 36 and 37 are made of resin, but can be changed as appropriate.

  In addition, when the case 3 is an assembly of a plurality of divided pieces as in this example, a state in which the heating element 2 is housed can be easily constructed, and the case 3 is excellent in manufacturability. The number of divisions and division positions can be selected as appropriate. For the connection between the divided pieces, the above-described fastening member, a bonding member such as an adhesive, or the like can be used.

  In addition, when the case 3 is provided with a reinforcing member 38 having an appropriate shape at an appropriate position as shown in FIG. In FIG. 2, an inverted T-shaped reinforcing member 38 that connects the wall portions 31 and 32 and the top surface portion 34, the wall portions 31 and 32, and the air guide portions 4 and 4 (inclined portions 332 and 332), A case in which the reinforcing members 38 and 38 are connected to each other is illustrated.

(Installation form)
The case 3 of this example is a direct placement type in which a part of the case 3 is placed in direct contact with a surface on which the heater device 1A is installed (indoor installation surface) (FIG. 3). In this example, the lower end surfaces of the peripheral wall portions of the end covers 36 and 37 slightly protrude from the installation surface portion 330 toward the indoor installation surface side. Therefore, the lower end surfaces of the peripheral wall portions of the end covers 36 and 37 are in direct contact with the indoor installation surface, and the installation surface portion 330 of the bottom 33 is installed in the room as the end covers 36 and 37 are slightly projected. They are arranged close to each other with a very small gap (0.5 mm or less, further 0.3 mm or less) with respect to the surface. With this very small gap, it is possible to prevent the metal edge or the like forming the bottom 33 from coming into contact with the indoor installation surface. With such a very small gap, it is possible to substantially prevent the cool air from the window portion w side from flowing out to the central portion of the room through this gap. Moreover, it is easy to avoid problems such as the accumulation of condensed water between the installation surface 330 having a relatively large area and the indoor installation surface.

(Installation location)
As described above, the heater device 1A according to the first embodiment is provided at the window, specifically, as shown in FIG. 3, the indoor floor surface 100 below the window portion w, a shelf surface (not shown) directly below the window, and a bay window. In this case, it is installed and used on the top surface (not shown) of the bay window.

(Use state)
The user installs the heater device 1A below the window portion w as shown in FIG. 3 when, for example, the cold air from the window portion w side is anxious. Specifically, in the length direction of the window portion w, one wall portion of the case 3, in FIG. 3, the wall portion 32 faces the window portion w side, and the other wall portion 31 faces the indoor side opposite to the window portion w. A heater device 1A is installed along the line. It is preferable to install the heater device 1A so that the longitudinal direction of the case 3 (substantially equal to the axial direction of the heating element 2) is parallel to the length direction of the window portion w. In FIG. 3, for convenience of explanation, there is a large gap between the side wall 102 of the building having the window portion w and the wall portion 32, but it is considered that the heater device 1A is preferably installed as close as possible to the window portion w.

  When the user turns on the switch of the heater device 1A, the heating element 2 is heated to a predetermined temperature, and the air in the case 3 is warmed. Since the warm air generated by this heating has a low density, the warm air is discharged upward from a warm air discharge port 3o provided above the case 3 (see the broken line arrow in FIG. 3). On the other hand, since the cold air from the window part w side has a high density, it flows downward in the room (see the black thick arrow in FIG. 3). Since the lower part in the case 3 has a lower pressure than the outside of the case 3 due to the generation and discharge of warm air, the intake port 3i located below the wall part 32 easily sucks cold air from the window part w side. The cold air introduced into the case 3 flows upward along the air guide portion 4 (inclined portion 332) from the installation surface portion 330 (FIG. 2) near the wall portion 32 in the case 3, and contacts the heating element 2. It is heated and gradually becomes warm. The cold air that has risen above the air guide portion 4 is flowed upward as described above, and is prevented from flowing downward along the inclined portion 332 near the wall portion 31 (two points in FIG. 3). An arrow virtually indicated by a chain line is indicated by an X mark). In this way, the cold air from the window portion w side is automatically sucked into the warm air by using the chimney effect, and the cold air is introduced from the inside of the case 3 to the indoor side opening (FIG. 3) by using the air guide portion 4. Then, the user can spend comfortably by preventing the air from flowing out through the air inlet 3i) of the wall 31. In particular, the heater device 1A of this example is arranged so that both the wall portions 31 and 32 form a triangle as described above, and thus it is easy to increase the flow velocity of the warm air discharged from the warm air discharge port 3o. As shown in FIG. 3, a part of the warm air exhausted from the warm air outlet 3 o flows downward along the side wall 102 from the ceiling 103 and cool air from the window w side flows downward. It can be expected to contribute to promoting this. As a result, since the convection between the cold air flowing downward and the warm air flowing upward is likely to occur, the cold air from the window portion w side hardly flows into the indoor side, and the user can be expected to spend comfortably. . When the user stops using the heater device 1A due to an increase in room temperature, the switch is turned off.

  In addition to controlling the energization state of the heating element 2 by a user's manual operation (switch ON / OFF), a configuration that can be automatically controlled can be provided (for example, a second embodiment described later, a modification). Examples (see (12) to (15)). When the fall OFF switch is provided, the energization circuit to the heating element 2 can be automatically turned OFF when the heater device 1A falls. Specifically, if the heater device 1A is in a normal installation state, the overturning OFF switch is retracted into the switch body by the operating projection being pushed by the installation surface in the room, and stored in the end cover 37. When the heater device 1A falls down, the bottom surface portion that is continuous with the end plate 35 is separated from the indoor installation surface, so that the operating protrusion protrudes from the end cover 37 and turns off the energization circuit.

(effect)
1 A of heater apparatuses of Embodiment 1 accommodate the heat generating body 2 in the case 3 provided with the wall parts 31 and 32, and the bottom part 33 over the full length, and open the lower specific location and the upper specific location in the case 3. Thus, a specific shape having a so-called chimney effect is obtained. If such a heater device 1A is used, cold air from the window portion w side can be efficiently and automatically sucked into the case 3 from the intake port 3i that opens toward the window portion w side. In particular, since the heater device 1A includes the air guide portion 4, the cold air introduced from the intake port 3i easily flows upward toward the heating element 2 and is heated by the heating element 2. That is, the cold air can be prevented from flowing out of the case 3 without being heated by the heating element 2, and the cold air introduced into the case 3 can be efficiently warmed up. With this warm air, the window portion w can be warmed or the cold air from the window portion w side can be warmed. Therefore, the heater device 1A according to the first embodiment can prevent the cold draft more reliably than the above-described conventional heater device, and is expected to have a great effect that the indoor occupant can hardly feel the cold due to the cold air from the window portion w side. Is done. Further, according to the heater device 1A of the first embodiment, the use of warm air can be expected to prevent condensation and prevent the indoor humidity from decreasing.

  In particular, in the heater device 1A of this example, although the air inlets 3i and 3i are provided on both wall portions 31 and 32, the air guide portions 4 and 4 overlap with the formation regions of the air inlets 3i and 3i in the wall portions 31 and 32, respectively. 4 is provided. Therefore, the cold air introduced into the case 3 from the inlet 3i on the window w side can be more reliably prevented from flowing out of the case 3 through the inlet 3i on the indoor side opposite to the window w.

In addition, the heater device 1 </ b> A of this example can further reduce the outflow of cold air from the window portion w side to the indoor side from the following points.
(1) It is a direct placement type, and the cold air does not substantially flow out from the gap between the outer bottom surface of the case 3 and the indoor installation surface.
(2) Since the warm air discharge port 3o is provided in the wall portions 31 and 32 and the heater device 1A is installed, the warm air discharge port 3o opens toward the window portion w, so that the window portion w can be efficiently warmed by the warm air. From this point, condensation can be prevented more reliably.
(3) the height position of the upper edge of the inlet 3i to 20% or less than 5% of the height H ₃ of the case 3 from the installation surface of the heater device 1A, the installation surface height position of the heat generating element 2 axes to 70% or less than 30% of the height H ₃ of the case 3 from easily more it gives chimney effect.

[Embodiment 2]
With reference to FIGS. 4 and 5, the heater device 1 </ b> B of the second embodiment will be described.
FIG. 4 is a schematic front view showing a part of the wall 31 of the case 3 (left region) cut out so that the inside of the case 3 can be seen.

  The basic configuration of the heater device 1B of the second embodiment is the same as that of the first embodiment. The heating element 2, the walls 31 and 32 provided with the intake port 3i and the warm air discharge port 3o, the air guide unit 4, and the like. And a case 3 including The heater device 1B of the second embodiment further includes a configuration that can automatically control the energization state of the heating element 2 according to the illuminance from the window. Specifically, the heater device 1 </ b> B includes an illuminance sensor 6 and a control unit 5 that adjusts the output of the heating element 2 based on information from the illuminance sensor 6. Hereinafter, the illuminance sensor 6 and the control unit 5 will be described in detail, and detailed description of the same configurations and effects as those of the first embodiment will be omitted.

  The illuminance sensor 6 is used to measure the illuminance based on sunlight from the window. A commercially available product can be used for the illuminance sensor 6. For example, a unit in which a detection unit that detects illuminance and a conversion unit that converts the output of the detection unit into a digital value by A / D conversion is easy to use. The detection unit and the conversion unit may be provided independently. When the output of the illuminance sensor 6 is configured to be input to the control unit 5 as a digital value, the control unit 5 is easy to calculate and the control unit 5 is easy to construct. For example, when the illuminance sensor 6 is disposed above the case 3, it is easy to accurately measure the illuminance based on sunlight from the window. The case 3 is provided with a light receiving window. FIG. 4 illustrates a case where the illuminance sensor 6 is provided above the end cover 37. When the illuminance sensor 6 is provided on the resin end cover 37 or the like, a light receiving window is easily formed.

  As shown in FIG. 5, the control unit 5 includes, for example, an input unit (not shown) for inputting various information, an illuminance determination unit 56 that performs determination based on input information from the illuminance sensor 6, storage information, and the like. The storage unit 50 that stores input information such as set values and the energization command unit 51 that issues a command to the heating element 2 based on the determination result are configured as follows. The input unit inputs illuminance information from the illuminance sensor 6 at appropriate intervals. The illuminance determination unit 56 compares the illuminance information with a threshold value (set value) called from the storage unit 50 to determine the magnitude of the illuminance. When the illuminance is smaller than the threshold value, the sunlight hitting the window is not sufficient, the window and its vicinity are at a relatively low temperature, and it is considered that cold air is flowing from the window side toward the center of the room . In this case, energization to the heating element 2 or change of electric power is desired to prevent a cold draft or the like. Therefore, the energization command unit 51 issues an energization start command to the heating element 2 and a supply power change command for increasing the energization power. On the other hand, when the illuminance is larger than the threshold value, much sunlight hits the window (for example, daytime on a sunny day), the window and its vicinity are warmed, and there is little cold from the window or the above-mentioned cold is flowing. It is not considered. If the illuminance is sufficiently large, energization to the heating element 2 is not necessary, and the energization command unit 51 issues a stop command. If the illuminance is large to some extent, the energization command unit 51 issues a supply power change command for reducing the energization power.

  Concerning the start of energization and the change in supply power, a semiconductor switch such as a triac or thyristor is provided to enable switching between continuous energization (ON) and deenergization (OFF) of the heating element 2, duty control, etc. The power supplied to the heating element 2 can be adjusted between 0% and 100%. The case where the supplied power is 0% is OFF, and the case where the supplied power is more than 0% and not more than 100% is ON. In this case, a plurality of threshold values are provided and stored in the storage unit 50, the illuminance information acquired by the illuminance determination unit 56 is compared with each threshold value, and the power supplied to the heating element 2 is predetermined according to the comparison result. The control unit 5 can be configured such that the energization command unit 51 issues a change command with a value of.

Specific control contents include the following, for example. For convenience of explanation, two threshold values A and B are used, but the control contents can be subdivided by increasing the threshold values.
(Α) When the supplied power is changed to outputs of a%, b%, and c% with respect to all outputs (a>b> c)
When the illuminance is larger than the threshold value A, the amount of sunlight is very large, so the supplied power is set to c% output and the supplied power is reduced.
When the illuminance is larger than the threshold value B (B <A), since the amount of sunshine is large to some extent, the supply power is set to b% output and the supply power is reduced to some extent.
When the illuminance is less than or equal to the threshold B, the amount of sunshine is small, so the supplied power is set to a% output and the supplied power is increased.
(Β) When the energization circuit to the heating element 2 is turned on / off When the illuminance is larger than the threshold value A, the amount of sunlight is very large, so the energization circuit is turned off.
When the illuminance is greater than the threshold value B (B <A), the amount of sunshine is somewhat large, so the power supply is turned on for a certain period of time and then turned off. The operating time (ON time) may be set in advance according to the amount of sunlight.
When the illuminance is less than or equal to the threshold value B, the energization circuit is turned on because the amount of sunlight is small.

  The heater device 1B according to the second embodiment automatically controls energization of the heating element 2 according to the illuminance from the window. For this reason, if the heater device 1B is used, it is possible to prevent cold drafts and dew condensation, while reducing wasteful operation time, reducing the increase in power consumption due to forgetting to switch off, etc., and energy saving can be expected. A reduction in the increase in electricity charges can also be expected. If the power supply to the heating element 2 can be adjusted in multiple stages according to the illuminance, further reduction of power consumption can be expected while preventing cold draft and condensation. Moreover, since the heater device 1B is automatic control, it is not necessary for the user to perform complicated operations and is easy to use.

  As in (α) and (β) described above, the power supplied to the heating element 2 is controlled regardless of the actual temperature in the vicinity of the warm air discharge port 3o in the case 3 and the actual temperature in the vicinity of the intake port 3i. However, if the output of the heating element is controlled in consideration of the above temperature, it is easy to adjust the temperature of the warm air to a more appropriate temperature. The heater device 1B includes a temperature sensor 7 that measures at least one of the temperature of the warm air discharged from the warm air discharge port 3o and the temperature of the air taken in from the intake port 3i, and the control unit 5 receives information from the illuminance sensor 6. And a configuration in which the output of the heating element 2 is adjusted based on the information from the temperature sensor 7.

  The temperature sensor 7 is used to measure a temperature that serves as a determination index of the output of the heating element 2 capable of forming warm air necessary for preventing cold drafts and preventing condensation, specifically, a warm air temperature and a cool air temperature. A temperature sensor 7 is disposed in the case 3 so that at least one of the warm air temperature and the cold air temperature can be measured. When measuring the temperature of the warm air, the temperature sensor 7 is disposed in the vicinity of the warm air outlet 3o in the case 3 (see also FIG. 2), and when the temperature of the cold air is measured, in the vicinity of the air inlet 3i in the case 3. Is mentioned. In this case, it is easy to accurately measure warm air and cold air, and more appropriate control can be performed. In FIG. 4, the case where the temperature sensor 7 is provided in the vicinity of the warm air discharge port 3o is illustrated.

  The control unit 5 further includes a temperature determination unit 57 that performs determination based on, for example, input information from the temperature sensor 7 or storage information. Then, temperature information from the temperature sensor 7 is input as needed, and the temperature determination unit 57 compares the temperature information with a threshold value (set value) called from the storage unit 50, and determines the determination result based on the temperature and the illuminance described above. The control unit 5 may be configured to comprehensively determine the determination result based on the determination result and to determine the control content for the heating element 2. Alternatively, the control unit 5 may be configured to finely adjust the supplied power based on the temperature information from the temperature sensor 7 during the control based on the determination result based on the illuminance described above. By such control, it is possible to prevent cold draft and condensation while further reducing waste of power consumption.

Specific control contents that take into account the measured illuminance and temperature include, for example, the following. Here, the case where supply electric power is changed so that the temperature of warm air may become predetermined | prescribed preset temperature is illustrated.
(Γ) When changing the set temperature T of warm air to x ° C, y ° C, z ° C (x>y> z)
When the illuminance is greater than the threshold A, the amount of sunlight is very large, so the set temperature T is changed to z ° C., and the supplied power is reduced so that the warm air becomes z ° C. For example, the control unit 5 obtains the temperature difference between the actual warm air temperature and the set temperature T = z ° C. by the temperature sensor 7, and the temperature determination unit 57 compares the temperature difference with a threshold value (set value). It may be configured to determine the adjustment amount of the supplied power based on the result. The controller 5 may be configured in the same manner in the following two cases.
When the illuminance is larger than the threshold value B (B <A), the amount of sunshine is large to some extent, so the set temperature T is changed to y ° C., and the supplied power is reduced to some extent so that the warm air becomes y ° C.
When the illuminance is less than or equal to the threshold value B, since the amount of sunlight is small, the set temperature T is changed to x ° C., and the supplied power is reduced so that the warm air becomes x ° C.
Like the control (α) described above, in addition to controlling the output of the supplied power as a constant value, it is possible to perform control that varies in multiple stages as follows.
(Δ) When changing the set temperature T of warm air to x ° C, y ° C, z ° C (x>y> z)
When the illuminance is larger than the threshold value A, the amount of sunlight is very large. Therefore, the set temperature T is changed to z ° C., and the supplied power is c% output for a predetermined time t so that the warm air becomes z ° C. Suppose that the supplied power is b% output. For example, the control unit 5 sets a plurality of threshold values used for the above-described temperature difference comparison determination, and according to the comparison result, as a predetermined time t or an output ratio of the supplied power (here, a% to c%), For example, it may be configured to select an appropriate value. The controller 5 may be configured in the same manner in the following two cases.
When the illuminance is larger than the threshold value B (B <A), the amount of sunshine is large to some extent. Therefore, the set temperature T is changed to y ° C., and the supplied power is b% for a predetermined time t so that the warm air becomes y ° C. The output power is set to a% output after t hours.
When the illuminance is less than or equal to the threshold value B, since the amount of sunlight is small, the set temperature T is changed to x ° C., and the supplied power is set to a% output so that the warm air x ° C.

  Furthermore, the control part 5 can be comprised so that the output of the heat generating body 2 may be made smaller than the present when the integrated amount of sunlight within a predetermined measurement time is measured and the integrated amount of sunlight is equal to or greater than a certain value. Here, when the window part is warmed by sunlight, the vicinity of the window part can be maintained to a certain extent, and the cold air from the window part side toward the indoor central part side is hardly generated. Therefore, the amount of sunshine is measured at appropriate intervals, and the measurement results are integrated for a predetermined measurement time. If the integrated value is large to some extent, the output of the heating element 2 is reduced or the energization is stopped. Then, it is easy to further reduce power consumption. For example, the control unit 5 compares a sunshine amount calculation unit (not shown) that calculates the integrated sunshine amount within a predetermined measurement time with the calculated integrated sunshine amount and a threshold value (set value) that is called from the storage unit 50. And an integrated sunshine amount determination unit 58. When the integrated amount of sunshine is larger than the threshold value, the window part is sufficiently warmed, and it is considered that cold air from the window part side is unlikely to be generated, so the energization command part 51 gives a stop command or energization power to the heating element 2. A command to change the power supply to be reduced is issued. On the other hand, when the integrated amount of sunshine is smaller than the threshold value, the energization command unit 51 issues a command to maintain the current energization state. Depending on the threshold value, the control unit 5 can be configured to issue a stop command after energization for a predetermined time. For the specific control contents, the above (α) to (δ) can be referred to.

  In addition, as the illuminance sensor 6, an analog output can be used to directly turn on / off the energization circuit to the heating element 2. In this case, when the illuminance sensor 6 detects a certain amount of sunshine, control is performed to turn off the energization circuit. Examples of the illuminance sensor 6 include a resistor such as a CdS sensor whose electric resistance changes according to the intensity of light. Use of a mechanical relay, a bimetal switch, or the like may be used to turn on / off the energization circuit.

  The present invention is not limited to these exemplifications, but is defined by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

For example, at least one of the following modifications can be made to the first and second embodiments.
(Modification)
(1) Let the heat generating body 2 be the aggregate | assembly which spaced apart and arranged the some strip | belt-plate-shaped thing in parallel.
In this case, for example, the intake port 3 i is provided only in one wall portion 31, and the upper end portion of the inclined portion 332 is provided so as to be close to or in contact with the inner surface of the other wall portion 32. When the cold air introduced from the air inlet 3i flows along the inclined portion 332 forming the air guide portion 4, it flows upward by contacting the inner surface of the other wall portion 32, and between adjacent strip-like heating elements. It is heated by entering a lower opening provided in. Since the air guide portion 4 is provided so as to cover the lower opening, the cold air easily flows upward between the belt-like heating elements and flows out of the case 3 without being heated by the heating elements. Can be prevented.

(2) The top surface portion 34 is provided with a through hole.
By using this through-hole as a warm air outlet 3o that opens upward toward the ceiling in the room, even if the height of the window portion w is large, an air flow that circulates cool air and warm air is formed. It is thought that it is easy to do.

(3) It does not have a top surface part, and the upper end edge of both wall parts 31 and 32 makes the periphery of one warm air discharge port 3o.
In this case, the warm air outlet 3o opens upward toward the ceiling of the room, and tends to have a relatively large opening area. Therefore, even when the height of the window portion w is large, it is considered that it is easy to form an air flow in which cool air and warm air circulate. If a lattice plate or the like is disposed at the warm air discharge port 3o, it is easy to prevent dust and foreign matter from entering the case 3. In addition, in this form, it can be set as a line-symmetric external appearance by aligning the height position of the upper end edge of both wall parts 31 and 32. FIG.

(4) Only one wall portion 31 is provided with the intake port 3i and the warm air discharge port 3o, and the other wall portion 32 is not provided with the intake port 3i and the warm air discharge port 3o. It is provided continuously with the surface portion 34.
In this case, in addition to the air guide portion 4, the lower region of the wall portion 32 functions as a member for preventing the cool air from flowing out of the case, and it is more effective that the cool air flows out of the case 3 through the case 3. Can be prevented. This form has an axisymmetric appearance with the center line C as an axis.

(5) When the wall portions 31 and 32 are each provided with the intake port 3i and the warm air discharge port 3o, the heights of at least one of the intake port 3i and the warm air discharge port 3o are different between the wall portions 31 and 32.
This form has an axisymmetric appearance with the center line C as an axis.

(6) The bottom portion 33 does not substantially have the installation surface portion 330, and the lower end edge of the inclined portion 332 forms the lower end edge of the intake port 3i. That is, the bottom 33 is substantially formed from the inclined portion 332, and has a mountain shape in a side view (or a cross-sectional view).
In this case, the bottom portion 33 can easily reduce the contact area with the indoor installation surface, and a sufficient triangular prism-shaped gap is provided between the bottom portion 33 and the indoor installation surface, so that condensed water adheres to the outer surface of the bottom portion 33. It is easy to avoid problems such as. In this form, the entire bottom portion 33 forms the air guide portion 4.

(7) The wall portions 31 and 32 are made of a flat plate material, and one wall portion 31 is disposed so as to be inclined with respect to the center line C, and the other wall portion 32 is disposed with respect to the center line C. They are arranged in parallel. That is, the case 3 has a right trapezoidal shape in cross section.
In this case, it is mentioned that the inlet port 3i and the warm air outlet port 3o are provided only on one wall portion 31 that is inclined. This form has an axisymmetric appearance with the center line C as an axis.

(8) At least one of the intake port 3i and the warm air discharge port 3o is not a continuous through hole, but a small hole group in which a plurality of small through holes are arranged apart from each other.
In this case, the lower end edge region and the upper end edge region of the wall portions 31 and 32 are comb-shaped, and the lower end edge and upper end edge of the wall portions 31 and 32 are made continuous with the bottom portion 33 and the top surface portion 34, or the wall portion 31. , 32 may be provided with a plurality of through holes in the lower edge region and the upper edge region. When a plurality of small hole groups are used, it is easy to prevent dust and foreign matter from entering the case 3 from the air inlet 3i and the warm air outlet 3o. Further, it is easy to increase the rigidity of the case 3 to some extent.

(9) The walls 31 and 32 are made of flat plate materials and are arranged in parallel. That is, the case 3 has a rectangular parallelepiped shape.
In this case, the shape of the case 3 is simple and excellent in the manufacturability of the case 3, and a stable installation state is easily maintained. In this configuration, since the distance between the wall portions 31 and 32 is substantially uniform from the lower end edge of the wall portions 31 and 32 toward the upper end edge, the wall portions 31 and 32 are formed so as to have a vertically long rectangular parallelepiped shape. Adjusting the height etc. makes it easier to improve the chimney effect.

(10) A leg portion (not shown) protruding from the bottom 33 of the case 3 toward the indoor installation surface is provided.
In this case, the position of the bottom 33 can be made higher than the indoor installation surface in accordance with the protruding height of the leg, and condensed water adheres to the outer surface of the bottom 33, or between the outer surface of the bottom 33 and the indoor installation surface. It is easy to avoid problems such as accumulation of dust. The height of the leg is 3 mm or more. However, using the gap between the leg and the indoor installation surface, there is a possibility that cold air from the window part w side flows out toward the central part of the room, so the height of the leg is 15 mm or less, Furthermore, 10 mm or less, 8 mm or less, and 5 mm or less are preferable. If the leg portion is a screw type and the like and the height can be adjusted, it can be brought close to the direct placement type as necessary. In addition, since the heater device 1A and the like are provided with a gap between the air guide portion 4 and the indoor installation surface as described above, the above-described problems can be easily avoided even without a leg portion.

(11) At least one of the end covers 36 and 37 is provided with an extension wall portion (not shown) extending in the longitudinal direction of the case 3.
The extension wall portion is attached to the case 3 so as to stand upright with respect to the installation surface in the room, and prevents the cold air from the window portion w side from flowing to the center side in the room. A flat plate or the like can be used for the extension wall. When the extension wall portion is attached to the end covers 36 and 37 by a hinge or the like, the extension wall portion can be folded when not in use to easily carry the case 3, and the opening angle can be easily changed. Or it can be set as the structure which can attach or detach an extension wall part.

(12) A temperature sensor 7 provided in the case 3 and a control unit that controls the energization state of the heating element 2 based on temperature information from the temperature sensor 7 are provided.
As described above, the temperature sensor 7 may be provided in the vicinity of the warm air outlet 3o or the inlet 3i in the case 3. The control unit includes, for example, an input unit, a temperature determination unit 57, a storage unit 50, and an energization command unit 51, and may be configured as follows (see also Embodiment 2). Temperature information from the temperature sensor 7 is input as needed. The temperature determination unit 57 compares the temperature information with a threshold value (set value) called from the storage unit 50. When the temperature in the vicinity of the warm air discharge port 3o or the vicinity of the intake port 3i is smaller than the threshold value, the energization command unit 51 issues an energization start command or a supply power change command to increase the energization power to the heating element 2. On the other hand, when the temperature is higher than the threshold, the energization command unit 51 issues a stop command or a supply power change command for reducing the energization power. For the specific control contents, the above (α) to (δ) can be referred to.

(13) A temperature sensor 7 provided in the case 3, a receiving unit capable of receiving temperature information from another temperature sensor provided at a position away from the window portion w in the room, and temperature information from the temperature sensor 7. And a control unit that controls the energization state of the heating element 2 based on the received temperature information.
In this case, the temperature sensor 7 is preferably disposed in the vicinity of the air inlet 3i so that the temperature of the cold air can be measured.
The temperature sensor provided indoors separately from the temperature sensor 7 includes, for example, a sensor built in a device including a transmission unit capable of transmitting measured temperature information to the control unit. Examples of such devices include indoor air conditioners and electric heaters that are controlled by a system that manages the electrical usage state of an electrical product, such as a HEMS (Home Energy Management System).
The control unit includes an input unit, a calculation unit that calculates a temperature difference based on the above two temperature information, a determination unit that performs determination based on the calculation result, a storage unit 50, and an energization command unit 51. Thus, the following configuration can be cited (see also Embodiment 2). The input unit inputs the above two temperature information as needed. The temperature difference calculation unit calculates a temperature difference between the temperature in the vicinity of the intake port 3i (the temperature considered to be close to the temperature at the window) and the indoor temperature from the temperature information. The determination unit compares this temperature difference with a threshold value (set value) called from the storage unit 50. When the temperature difference is larger than the threshold value, the temperature at the window is typically low, and it is considered that cold air flows from the window portion w side toward the indoor central portion side. Therefore, the energization command unit 51 issues an energization start command and a supply power change command to increase the energization power to the heating element 2. On the other hand, when the said temperature difference is smaller than a threshold value, it is thought that there is little cool air from the window part side, or the cool air from the window part side is not flowing. For this reason, the energization command unit 51 issues a stop command or a supply power change command for reducing the energization power. For the specific control contents, the above (α) to (δ) can be referred to.

(14) A communication unit that communicates with the management system such as the above-described HEMS, and a control unit that controls the energization state of the heating element 2 based on a command from the management system received by the communication unit.
The communication unit may be provided at an appropriate position of the case 3 (for example, in the end covers 36 and 37).
The control unit includes an input unit, a determination unit, a storage unit 50, and an energization command unit 51, and may be configured as follows (see also Embodiment 2). The communication unit acquires information from the management system as needed. The determination unit determines the presence or absence of a control command based on the information. The energization command unit 51 issues an energization start command, a supply power change command, or a stop command to the heating element 2 based on the determination result.

(15) The switch described in the first embodiment, the control unit 5 described in the second embodiment, and two or more control units selected from the control units described in the modifications (12) to (14), The configuration is such that a user can select from a manual energization control mode and a plurality of automatic control modes.

[Appendix]
In addition to the above-described first and second embodiments and modifications, for example, a heater device that can prevent a cold draft can have the following configuration.
[Appendix 1]
A heating element that generates heat when energized;
A case that houses the heating element over its entire length, and has an intake port provided at a position below the lower end of the heating element, and a warm air discharge port provided at a position above the upper end of the heating element;
An illuminance sensor;
A heater device comprising: a control unit that adjusts an output of the heating element based on information from the illuminance sensor.
[Appendix 2]
A temperature sensor for measuring at least one of a temperature of warm air discharged from the warm air discharge port and a temperature of air taken in from the intake port;
The said control part is a heater apparatus as described in [Appendix 1] which adjusts the output of the said heat generating body based on the information from the said illumination intensity sensor, and the information from the said temperature sensor.
[Appendix 3]
The control unit measures the integrated amount of sunshine within a predetermined measurement time, and controls the output of the heating element to be smaller than the present when the integrated amount of sunshine is a predetermined value or more [Appendix 1] or The heater device according to [Appendix 2].
For the specific configuration of the heating element and the case, refer to Embodiment 1 described above. Refer to the above-mentioned Embodiment 2 for the concrete control provided with an illuminance sensor and an appropriate temperature sensor, the effect, and the like.

DESCRIPTION OF SYMBOLS 1A, 1B Heater 2 Heating element 22 Fin part 24 Heat insulation part 3 Case 31, 32 Wall part 33 Bottom part 330 Installation surface part 332 Inclination part 334 Base part 34 Top surface part 3i Intake port 3o Warm air discharge port 35 End plate 36, 37 End part Cover 38 Reinforcing material 39 Code 4 Air guide unit 5 Control unit 50 Storage unit 51 Energization command unit 56 Illuminance determination unit 57 Temperature determination unit 58 Integrated sunshine amount determination unit 6 Illuminance sensor 7 Temperature sensor 100 Floor surface 102 Side wall 103 Ceiling w Window unit

Claims (12)

A rod-shaped heating element that generates heat when energized;
A case for storing the heating element over its entire length;
The case is
A pair of walls arranged to sandwich the heating element over its entire length;
A bottom portion covering the entire length of the lower portion of the heating element;
In each of the pair of wall portions , an intake port provided at a position lower than the lower end of the heating element and having an edge of the bottom portion as a lower end edge ;
A warm air outlet provided at a position above the upper end of the heating element in the case;
An air guide portion that is at least a part of the bottom portion and is provided in the case and guides air taken into the case from the intake port to the heating element side ;
The air guide portion includes an inclined portion that is inclined upward from a lower end edge disposed on the intake port side toward an upper end edge disposed on the heating element side,
The upper end edge of the air guide portion is located above the upper end edge of the intake port,
The bottom portion is formed between the indoor installation surface and a heater device configured such that a gap extending from one wall portion side to the other wall portion side is 0.5 mm or less . A rod-shaped heating element that generates heat when energized;
A case for storing the heating element over its entire length;
The case is
A pair of walls arranged to sandwich the heating element over its entire length;
A bottom portion covering the entire length of the lower portion of the heating element;
In each of the pair of wall portions , an intake port provided at a position lower than the lower end of the heating element and having an edge of the bottom portion as a lower end edge ;
A warm air outlet provided at a position above the upper end of the heating element in the case;
An air guide portion that is at least a part of the bottom portion and is provided in the case and guides air taken into the case from the intake port to the heating element side ;
The air guide portion includes an inclined portion that is inclined upward from a lower end edge disposed on the intake port side toward an upper end edge disposed on the heating element side,
The upper end edge of the air guide portion is located above the upper end edge of the intake port,
Furthermore, the heater apparatus which is provided with the leg part which protrudes toward the indoor installation surface side from the bottom part of the said case, and the height of the said leg part is 5 mm or less . 3. The heater device according to claim 1, wherein the pair of wall portions are arranged so that a distance between both wall portions becomes narrower from a lower end side toward an upper end side. The height position of the upper edge of the intake port is in the range of 5% to 20% of the height of the case from the installation surface of the heater device,
The heater according to any one of claims 1 to 3 , wherein a height position of the shaft of the heating element is in a range of 30% to 70% of a height of the case from an installation surface of the heater device. apparatus. Before Kishirubefubu and heating apparatus according to any one of claims 1 to 4 which is provided redundantly in formation regions of the intake port in each wall.   6. The heater device according to claim 5, wherein the pair of wall portions have a line-symmetric outer shape in a cross section obtained by cutting the case along a plane orthogonal to a longitudinal direction thereof.   The heater device according to claim 6, wherein the air guide portion has a line-symmetric outer shape in the cross section.   The bottom portion is arranged to be parallel to the indoor installation surface, and includes an installation surface portion connected to the inclined portion,
  The heater device according to any one of claims 1 to 7, wherein a lower end edge of the intake port is an edge of the installation surface portion. An illuminance sensor;
The heater apparatus of any one of Claims 1-8 provided with the control part which adjusts the output of the said heat generating body based on the information from the said illumination intensity sensor. A temperature sensor for measuring at least one of a temperature of warm air discharged from the warm air discharge port and a temperature of air taken in from the intake port;
The heater device according to claim 9, wherein the control unit adjusts an output of the heating element based on information from the illuminance sensor and information from the temperature sensor.   The control unit measures an integrated amount of sunlight within a predetermined measurement time, and controls the output of the heating element to be smaller than the present when the integrated amount of sunlight is equal to or greater than a predetermined value. Item 11. The heater device according to Item 10. The heater device according to any one of claims 1 to 11, wherein the heating value of the heating element is less than 71.5 W / m.

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