JP2019045088A - Heater device - Google Patents

Abstract

To provide a heater device capable of preventing cold draft.SOLUTION: A heater device includes a heating element generating heat by energization, and a case housing the heating element over the whole length, and the case includes a pair of wall portions disposed in a manner of holding the heating element therebetween over the whole length, a bottom portion covering a lower part of the heating element over the whole length, an intake port formed on a lower position with respect to a lower end of the heating element on at least one of the wall portions, a warm air discharge port disposed on an upper position with respect to an upper end of the heating element in the case, and a wind guide portion disposed in the case for guiding the air taken into the case from the intake port to a heating element side.SELECTED DRAWING: 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 at the lower part of a window glass in a building along a glass surface to prevent cold draft or prevent condensation of the window. With cold draft, when heating is performed in winter with a low outside temperature in a room with a window, low temperature air (cold air) cooled by the outside air near the window goes from the window side toward the center of the room , It is a phenomenon that flows downward in the room along the floor of the room.

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

  In Patent Document 2, as a heater device for preventing condensation, a plurality of strip-shaped heat generating members are arranged in parallel, spaced apart so that the front and back surfaces of each strip are parallel, and both ends thereof are used as a portable frame Disclosed is an assembly of fixed heating elements. In this heater device, one opening formed by the adjacent heating elements is an air inlet, and the other opening is a hot air outlet. By providing a predetermined lower space between the lower end of the heat generating element and the surface on which the heater device is installed in the room (eg, floor surface, etc. hereinafter may be referred to as the installation surface in the room), this heater device Introduce.

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

  In the above-mentioned conventional heater device, it is considered that cold air from the window side may flow over the heater device toward the central portion side of the room. Therefore, in the above-mentioned conventional apparatus, the heater apparatus which can prevent cold draft more reliably is desired, since the effect of making the room occupant less likely to feel cold is small.

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

  Since the heater device of Patent Document 2 is also installed in the room with the above-mentioned lower gap, it is considered that cold air may flow out from the lower side of the heater device toward the central part of the room by using this lower gap. Be

  Therefore, it is an object to provide a heater device capable of preventing a cold draft.

The heater device of the present disclosure is
A heating element that generates heat by energization;
And a case for storing the heating element over the entire length of the case;
The case is
A pair of wall portions arranged to sandwich the heating element over the entire length thereof;
A bottom covering the lower side of the heating element over its entire length;
An air inlet provided at a position lower than the lower end of the heat generating member in at least one of the pair of wall portions;
A warm air outlet provided above the upper end of the heat generating body in the case;
The air guide unit is provided in the case, and guides the air taken into the case from the air intake to the heat generating body side.

  The above heater device can prevent cold draft.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view which shows the heater apparatus of Embodiment 1 typically. It is the cross-sectional view which cut | disconnected the heater apparatus of Embodiment 1 by the (II)-(II) cutting line shown in FIG. FIG. 2 is an explanatory view for explaining a use state of the heater device of Embodiment 1. It is a schematic front view which shows the heater apparatus of Embodiment 2 typically. FIG. 10 is a functional block diagram centering on a control unit provided in the heater device of the second embodiment.

Description of the embodiment of the present invention
First, the embodiments of the present invention will be listed and described.
(1) A heater device according to one aspect of the present invention is
A heating element that generates heat by energization;
And a case for storing the heating element over the entire length of the case;
The case is
A pair of wall portions arranged to sandwich the heating element over the entire length thereof;
A bottom covering the lower side of the heating element over its entire length;
An air inlet provided at a position lower than the lower end of the heat generating member in at least one of the pair of wall portions;
A warm air outlet provided above the upper end of the heat generating body in the case;
The air guide unit is provided in the case, and guides the air taken into the case from the air intake to the heat generating body side.

  In the above-described heater device, the side of the heat generating body is covered by the pair of wall portions constituting the case, and the lower side of the heat generating body is covered by the bottom portion. Further, in this heater device, the case has an opening below the lower end of the heating element and an opening above the upper end of the heating element. That is, this case is provided with an air intake port at the lower side and a warm air exhaust port at the upper side while making the heat generating body not to be substantially exposed. The above-mentioned heater device provided with a case of such a specific shape, when the wall portion provided with the intake port is installed facing the window portion side, cool air (cold air) from the window portion side by so-called chimney effect Can be efficiently and automatically inhaled from the air intake into the case. Specifically, the air heated by the heating element in the case has a relatively low density, so that the air in the case has a density difference, and the density difference causes an upward flow. As a result, a pressure difference occurs between the lower side of the case and the outer side of the case, and the above-described cold air is taken into the case of a relatively low pressure from the air inlet 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 above-mentioned heater device is provided with the air guide portion, the cold air introduced into the case from the air intake port flows upward along the air guide portion toward the heat generating body when it contacts the air guide portion. It is heated by the air and is discharged from the warm air outlet as it becomes warm. Since the warm air mainly flows upward in the room, it is possible to generate an air flow (convection) in which the cool air flowing downward and the warm air flowing upward circulate. Thus, the above-mentioned heater device can prevent cold draft. Furthermore, the cold air introduced into the above-described case is restricted in its flow direction by the air guide portion to the heat generating body side, and is inhibited from flowing out of the case at a low temperature without being heated by the heat generating body. So to speak, the air guide part also functions as an outflow prevention member out of the case in cold air. Therefore, it is expected that the above-described heater device having the air guide portion in the case can prevent cold draft more reliably than the above-described conventional heater device, and has a great effect of making it difficult for a room occupant to feel cold.

  In addition, since the window can be directly warmed by the warm air discharged from the upper side of the case, the above-described heater device can prevent the temperature at the window from falling below the dew point even when the indoor humidity is high.

(2) As an example of the above heater device,
The pair of wall portions may be arranged such that the distance between the wall portions is narrowed from the lower end side toward the upper end side.

  In the above embodiment, the flow rate of the warm air can be easily increased by reducing the volume of the case from the inlet side to the warm air outlet side. It is expected that the warm air will hit the ceiling vigorously and flow downward along the indoor wall from the ceiling, thereby facilitating the flow of cold air from the window side and causing the above-mentioned convection. Moreover, the said form is stylish compared with the case where it has a triangular-prism external appearance and has the rectangular solid external appearance described in patent document 1, 2, and it is excellent in the designability.

(3) As an example of the above heater device,
The height position of the upper end 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 height position of the axis of the heat generating body may be in the range of 30% to 70% of the height of the case from the installation surface.

  The above-mentioned form is suitable because the height from the installation surface in the room in the heating element is not too high, not too low, and the opening area of the intake port is not too small, and can be secured appropriately without being too large. Position properly. Therefore, while the said form can absorb cold air | gas well, it can form warm air | gas favorably and can prevent a cold draft more reliably.

(4) As an example of the above heater device,
The air guide portion may include an inclined portion which inclines upward from the lower end edge disposed on the air inlet side toward the upper end edge disposed on the heat generating body side.

  In the above-described embodiment, cold air from the intake port flows smoothly toward the heat generating body along the inclined portion, so that pressure loss due to contact with the air guide portion can be easily reduced and the ability to absorb cold air can be easily increased. Therefore, the above-mentioned form can prevent cold draft more certainly.

(5) As an example of the above heater device,
Each of the pair of wall portions includes the air inlet;
The air guide portion may be provided in an overlapping manner in the formation area of the air inlet in each wall portion.
"When the air guide portion is provided overlapping with the formation region of the air inlet in each wall portion" 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 at the wall Overlap with the formation area of (or coincide with or larger than the formation area of the intake port). Here, the width direction of the case means a direction perpendicular to the longitudinal direction of the case and from one wall to the other.

  Since the said form equips both wall parts with an inlet, respectively, the cold draft preventing effect is acquired even if it installs any wall part toward the window part side. Such a form described above does not have to deal with cords and the like connected to the heat generating element, has a high degree of freedom in selecting the installation state, and is easy to use in this respect. Further, in the above embodiment, cold air can be sucked into the case regardless of which air intake port is installed toward the window side. And since the above-mentioned form overlaps with the formation area of each air intake and is equipped with a wind guide part, the cold air introduced from the air intake on the window side is not heated by the heating element and remains low temperature opposite to the window. It can prevent flowing out of the case from the air intake on the side. Therefore, the above-mentioned form can prevent cold draft more certainly.

(6) As an example of the above-mentioned heater device which equips both wall parts with an intake, respectively
In the cross section which cut said case in the plane which intersects perpendicularly to the longitudinal direction, a form with which a pair of wall parts have line-symmetrical outline is mentioned.

  In the above embodiment, since the specifications (size, shape, formation position, etc.) of the air inlet and the warm air outlet in both wall portions are respectively equal, the air intake of cold air is set even if any wall portion is directed to the window portion side It is easy to equalize the amount and the discharge amount of warm air, and it is easy to obtain the cold draft prevention effect as well. Further, in the above embodiment, since the case has a line-symmetrical outer shape, the same appearance can be obtained regardless of which wall portion is installed toward the central portion side of the room, and the design is excellent in this point. 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 symmetrical,
In the cross section, the air guide portion has a form having a line-symmetrical outer shape.

  In the above embodiment, since the inner shape of the case is also axisymmetric, the air intake and the air guide part are similarly arranged regardless of which wall part is installed toward the window part, and a cold draft preventing effect is achieved. Is obtained similarly. In this respect, the above embodiment is excellent in convenience. In addition, the case tends to have a simpler shape and is excellent in manufacturability.

(8) As an example of the above heater device,
The air guide portion may be configured to double as the bottom portion.

  The above-mentioned form has a small number of parts of the case and can be made lightweight, and is easy to use in this respect. When the air guide portion includes the above-described inclined portion, a gap corresponding to the inclination of the inclined portion can be provided between the bottom of the case and the installation surface of the room, so condensation water is generated between the bottom of the case and the installation surface of the room. It is easy to avoid problems such as accumulation.

(9) As an example of the above heater device,
Illuminance sensor,
And a control unit configured to adjust the output of the heating element based on the information from the illuminance sensor.
"Adjusting the output of the heating element" includes increasing, 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 the window part receives sunlight to a certain extent and the vicinity of the window part is warmed to some extent, it becomes difficult to generate cold air from the window side to the central part side of the room. The heater device such as the above (1) is installed near the window and used, so if the illuminance near the window is measured and the output of the heating element is adjusted according to the magnitude of the illuminance, the power consumption is reduced. it can. In the above embodiment, the illuminance sensor and the control unit are provided to measure the illuminance from the window, and the output of the heating element is automatically adjusted according to the illuminance, thereby reducing power consumption and achieving energy saving. it can. Moreover, the above-mentioned form does not require the user to perform complicated operations and is easy to use.

(10) As an example of a heater device provided with an illuminance sensor,
A temperature sensor for measuring at least one of the temperature of the warm air discharged from the warm air outlet and the temperature of the air taken in from the air inlet;
The said control part is a form 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.

  As described above, in addition to the reduction of power consumption and the improvement of convenience, the above embodiment automatically generates a heating element according to the illuminance from the window and the temperature in the heater (for example, the warm air temperature or the cold air temperature). In order to adjust the output of, it is easy to adjust the temperature of the warm air to a more appropriate temperature.

(11) As an example of a heater device provided with an illuminance sensor,
The control unit measures an integrated sunshine amount within a predetermined measurement time, and controls the output of the heating element to be smaller than the current value when the integrated sunshine amount is a predetermined value or more.
The phrase "making the output of the heating element smaller than the present" includes the case of stopping the output.

  Here, when the window portion is exposed to sunlight for a certain period of time, the vicinity of the window portion is warmed and the warmed state is maintained to a certain extent, so that cold air from the window portion side to the central portion side of the room is hardly generated. The findings of Since the said form integrates the amount of sunshine measured with an illumination intensity sensor, and adjusts the output of a heat generating body automatically according to the amount of accumulated sunshine, power consumption can be reduced and energy saving can be achieved. Moreover, the above-mentioned form does not require the user to perform complicated operations and is easy to use.

(12) As an example of the above heater device,
The calorific value of the heating element may be less than 71.5 W / m. The calorific value here is the amount of heat (W) per meter of the heating element.

  As described above, the heater device such as (1) can heat the cold air introduced into the case efficiently by bringing it into contact with the heating element, so even if the heating element has a relatively small calorific value, the cold air can be heated satisfactorily. it can. Therefore, in addition to being able to prevent a cold draft, the above embodiment 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 numerals show the same name thing.

Embodiment 1
Hereinafter, the heater device 1A of 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 taken along a plane orthogonal to the longitudinal direction of the case 3 (which is also the axial direction of the heating element 2).

(Outline)
Heater device 1A of the first embodiment is typically installed and used at the window edge in a room having a window portion w (FIG. 3) (a detached house, an apartment house such as a detached house or apartment, various facilities, etc.) Are elongated (Figure 1). The heater device 1A includes a heating element 2 that generates heat by energization and a case 3 that houses the heating element 2 over the entire length thereof. The case 3 has a pair of wall portions 31 and 32 (see also FIG. 2) disposed facing each other so as to sandwich the heating element 2 over its entire length, and extends the entire length of the heating element 2 below the heating element 2 And a bottom 33 covering the same (the same). Typically, case 3 includes top surface 34 covering the upper side of heating element 2, and walls 31, 32 and top surface 34 and bottom 33 (hereinafter, these may be collectively referred to as the main case). A container including an end plate 35 (only the left side is shown in FIG. 1 and the right end plate is omitted in FIG. 1) covering openings at both ends in the longitudinal direction, and the inside of the case 3 is a storage space for the heating element 2 . In the state where the heater device 1A is installed, the bottom 33 side is called downward, and the top surface 34 is called upward. 1 to 3 show a state in which 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 cold air from the window w side into the case 3 below the case 3, and warms the introduced cold air by the heating element 2 and generates warm air The case 3 is provided with an opening (warm air outlet 3o) for discharging the air from the case 3 to the outside of the case 3. The heater device 1A including the case 3 having such a specific shape produces a so-called chimney effect, and the cold air from the window w side is automatically incorporated into the case 3 by the air inlet 3i disposed toward the window w side. And warm air in the case 3 can be discharged from the upper side of the case 3. In particular, the heater device 1A of the first embodiment is configured to direct cold air introduced into the case 3 from the air inlet 3i located below the case 3 to flow upward toward the heat generating body 2 (air guide portion 4). The heater device 1A makes the heating element 2 easy to be in contact with the heating element 2 and is easy to warm up by flowing the cool air introduced into the case 3 upward by the air guide part 4 provided in the case 3. It is possible to effectively inhibit the flow of cold air that is not heated and remains at a low temperature outside the case 3. The details will be described below.

  In the following description, the size along the longitudinal direction of case 3 is the length, orthogonal to the longitudinal direction of case 3 and the direction from one wall 31 to the other wall 32 along the width direction and the width direction The width is perpendicular to the longitudinal direction of the case 3 and in the direction from the bottom 33 toward the top 34 (vertically in the installed state of the heater device 1A) the height and the height along the height. It is called. The bisector of the maximum width in the case 3 (here, the width W of the bottom 33, FIG. 2) is called the center line C (FIG. 2).

(Heating element)
The heating element 2 is preferably disposed along the length direction of the window w, and a rod-shaped electric heater corresponding to the length of the window w can be suitably used. The heating element 2 in this example is a sheathed heater in which a heating wire such as a nichrome wire and an insulating powder such as MgO are accommodated in a cylindrical pipe, and both ends form a portion supported by the case 3. Known sheathed heaters can be used. Moreover, in this example, the fin part 22 which protrudes in radial direction from the outer peripheral surface of the said pipe is provided. In this example, a band-plate shaped fin portion 22 is provided on the outer periphery of the pipe so as to draw a spiral. The heating element 2 provided with such a fin portion 22 is a round bar as a whole. In FIG. 1, a part of the fin portion 22 is shown in a spiral shape, and the remaining portion is shown in a simplified cylindrical shape. In FIGS. 2 to 4, the fin portion 22 is simplified and shown in a circular or cylindrical shape. As another heating element 2, for example, a known electric heater using a mixture containing carbon fiber, a conductive powder and a resin or rubber may be used. You may utilize the electric heater etc. which were provided in strip shape.

  The calorific value of the heating element 2 can be appropriately selected. Although it is thought that the heating rate of cold air can be increased or the temperature of warm air can be more easily increased as the heat generation amount is increased, the power consumption is increased and the electricity cost is increased. The heater device 1A of the first embodiment includes the case 3 in which cold air can be easily brought into contact with the heating element 2 in addition to the chimney effect as described above, and the cold air can be efficiently heated. Therefore, as the heating element 2, one having a calorific value smaller than the calorific value conventionally required for preventing cold draft can be used. For example, a heater 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 set to 65 W / m or less, and further to 60 W / m or less. From the viewpoint of more reliable prevention of cold draft, although depending on the size of the case 3 etc., the calorific value of the heating element 2 can be set to 30 W / m or more, and further to 50 W / m or more.

  The number of heating elements 2 can be selected appropriately. The heating device 1A according to the first embodiment has a good heating efficiency for cold air as described above, and therefore, the number of heating elements 2 may be small, and in the present example, it is one. The heating element 2 of this embodiment is disposed 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. It is arranged in line symmetry. Note that the number of heating elements 2 can be more than one. For example, an aggregate (eg, Patent Documents 1 and 2) in which a plurality of strip-shaped heating elements are arranged in parallel with each other with the front and back surfaces of each strip parallel to one another (eg, described later) Modification example (1)).

  As described above, the length of the heating element 2 is preferably long to some extent, for example, 0.5 times or more of the standard length of the window w, or 0.7 times or more, 0.75 times or more, 0.8 It is mentioned that it is more than doubled. The length of the heating element 2 can also be made equal to the standard length of the window w. The diameter of the heat generating body 2, the outer diameter d of the fin portion 22 (FIG. 2), and the like can be selected as appropriate.

  In addition, a cord 39 for supplying commercial power from a power source (not shown) is connected to the heating element 2. When the cord 39 is equipped with a switch (not shown), the user can easily perform the operation of starting and stopping the energization of the heating element 2. The cord 39 and the switch may be known ones. A switch can also be provided in case 3. When the heater device 1A is used, the plug at the tip of the cord 39 is inserted into a socket (not shown) in the room so that power can be supplied from the power supply to the heating element 2.

  Further, as illustrated in FIG. 2, in order to enhance the thermal insulation between the heating element 2 and the case 3, it is formed of a heat-resistant material having low thermal conductivity, for example, a non-metallic material such as a heat-resistant resin. The heat insulation part 24 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 heat insulating parts 24 may be one or more. The heat insulating portion 24 may be omitted by adjusting the distance between the heating portion 2 and the wall portions 31 and 32 and the bottom portion 33 of the case 3.

(Case)
<Overall configuration>
The case 3 has a bottom 33 disposed on the indoor installation side, walls 31 and 32 disposed to stand from the bottom 33, and a top 34 disposed to face the bottom 33. It is an elongated container provided. Furthermore, the case 3 has an opening at a predetermined position, and includes a wind guide 4. More specifically, in the case 3, at least one of the pair of wall portions 31 and 32, the air inlet 3 i provided at a position lower than the lower end of the heat generating body 2 and the upper end of the heat generating body 2 in the case 3 Also includes a warm air discharge port 3o provided at the upper position, and a wind guide portion 4 provided in the case 3 and guiding air (cold air) taken into the case 3 from the air intake port 3i to the heating element 2 side See also Figure 2).

  In this example, the pair of wall portions 31 and 32 are arranged such that the distance between the wall portions 31 and 32 is narrowed from the lower end side toward the upper end side. Therefore, as shown in FIG. 1, the case 3 has a triangular prism-like appearance over its entire length. The pair of wall portions 31 and 32 have intake ports 3i and 3i, respectively, and also have warm air exhaust ports 3o and 3o. In the cross section of the case 3 as shown in FIG. Have. In this example, the lower end edges of the wall portions 31 and 32 form the upper end edge of the opening edges of the intake ports 3i and 3i, and the upper end edges of the wall portions 31 and 32 are openings of the warm air discharge ports 3o and 3o Of the edges, make the bottom edge.

  Further, in this example, the air guide portions 4 and 4 are provided overlapping the formation regions of the air inlets 3i and 3i in the wall portions 31 and 32, and as shown in FIG. The wind parts 4, 4 have a line-symmetrical outer shape with the center line C as an axis. Each of the air guiding portions 4 and 4 includes inclined portions 332 and 332 which are inclined upward from the lower end edge disposed on the intake port 3i side to the upper end edge disposed on the heating element 2 side, and doubles as the bottom portion 33. .

  In addition, the shape of case 3 has a magnitude | size which can accommodate the full length of the heat generating body 2, and can be changed in the range which has a chimney effect (for example, the below-mentioned modification (2)-(9) reference).

<Wall part>
Each of the wall portions 31 and 32 in this example is mainly made of a horizontally long rectangular plate as shown in FIGS. The wall portions 31 and 32 are disposed so as to sandwich the side surface of the rod-shaped heating element 2 at an intermediate portion apart from the lower end edge and the upper end edge of these plate members. The lower end edge of each of the wall portions 31 and 32 is not continuous with the bottom portion 33 (here, the installation surface portion 330 described later), and a predetermined gap is provided between it and the edge of the bottom portion 33. The respective clearances form air intakes 3i, 3i opened in the wall portions 31, 32. The upper end edge of each of the wall portions 31 and 32 is not continuous with the top surface portion 34, and a predetermined gap is provided between the top end portion and the edge of the top surface portion 34. Each clearance makes the warm air discharge ports 3o and 3o opened to the wall parts 31 and 32, respectively.

  The wall portions 31 and 32 in this example are not arranged in parallel, and as shown in FIG. 2, the upper end edges of both wall portions 31 and 32 are arranged so as to approach and the lower end edges are separated. By this arrangement, the distance between the wall portions 31 and 32 is continuously narrowed from the lower end side toward the upper end side, and it is easy to increase the flow rate of the warm air. It is expected that this warm air is likely to cause convection between the cool air flowing downward and the warm air flowing upward as described later. In addition, such case 3 has a stylish appearance of triangular column shape and is excellent in design.

  The inclination angles with respect to the center line C or the installation surface portion 330 in each of the wall portions 31 and 32 can be made different. In this example, the inclination angles of the wall portions 31 and 32 are substantially equal, and the wall portions 31 and 32 are provided in line symmetry on the center line C in the cross section of the case 3. Therefore, the size (opening area etc.), the shape, and the formation position of the intake port 3i and the warm air exhaust port 3o provided in each of the wall portions 31 and 32 are respectively equal. Such a heater device 1A makes it easy to equalize the amount of intake of cold air and the amount of discharge of warm air when the wall portions 31, 32 are installed toward the window portion w side, and the cold draft preventing effect is similarly obtained. easy. Further, by having the line-symmetrical outer shape, the same appearance can be obtained even when any wall portion 31, 32 is installed on the side opposite to the window portion w (in the center portion side of the room). Superior to design. Furthermore, the case 3 having a line-symmetrical outer shape tends to be a simple outer shape, and the manufacturability of the case 3 is also excellent.

In particular, the walls 31 and 32 in this example are provided such 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 wall portions 31 and 32 may be constructed by the flat plate so that the flat profile, but 15 times as a relatively large bending radius (e.g., the case 3 of the height H ₃ 8 times in this example It is possible to construct an outer shape having a smooth curved surface, using an arc-shaped plate material having a degree of 9 times or more and a degree of about 12 times or less. The respective arc plate members are arranged such that imaginary extension lines extending from the upper end cross each other. By following the arc-shaped wall portions 31 and 32, it is considered that the flow of warm air toward the warm air outlet 3o above the case 3 can be easily smoothed, and pressure loss and the like can be easily reduced. 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 air guide part>
The bottom 33 of this example is shaped like a hat in cross-sectional shape as shown in FIG. 2 and has a shape like a horizontally long rectangular plate material bent in a mountain shape as shown in FIG. Specifically, the bottom 33 crosses the installation surface 330 arranged parallel to the installation surface in the room and the installation surface 330 (or the installation surface in the room) non-orthogonally, and is installed on the intake port 3i side It has an inclined portion 332 which inclines upward from the lower end edge connected to the surface portion 330 to the upper end edge disposed on the heating element 2 side. The bottom portion 33 is provided in line symmetry with the center line C as an axis in the cross section of the case 3. The intersection of the upper end edges of the two inclined portions 332 and 332 forms a peak of a mountain and is located on the center line C. The edge of the installation surface portion 330 forms the lower end edge of the opening edges of the air inlets 3i, 3i.

  Of the two inclined portions 332 and 332, one inclined portion 332 facing the one wall portion 31 generates cold air introduced into the case 3 from the air inlet 3i of the wall portion 31 from the inner surface of the one installation surface portion 330 It has a function to ascend toward the body 2 side. Similarly, the other inclined portion 332 opposed to the other wall portion 32 directs cold air introduced into the case 3 from the air inlet 3i of the wall portion 32 from the inner surface of the other installation surface portion 330 toward the heating element 2 side Has the ability 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 or the like erected to be orthogonal to the installation surface portion 330. In this case, if the cold air hits the vertical wall, the flow rate of the cold air may decrease, that is, the pressure loss may increase, the ability to absorb the cold air may decrease, 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 can easily flow smoothly toward the heating element 2 side, the above-mentioned pressure loss is reduced, and the ability to absorb cold air is enhanced. easy. As a result, it is easy to prevent a cold draft. And the air guide part 4 which regulates the flow direction of the above-mentioned cold air also functions as a blocking member which prevents that the above-mentioned cold air flows out of case 3 at low temperature without contacting heating element 2. In this example, the wall portion disposed on the window w side, for example, the cold air introduced from the air inlet 3i of the wall portion 31 is disposed on the opposite side to the window portion w side, for example, the wall portion 32 It can prevent flowing out of case 3 from air intake 3i. The same applies to the case where the wall 32 is disposed on the side of the window w and the wall 31 is disposed on the side opposite to the side of the window w (FIG. 3). Also from this, the heater device 1A provided with the air guide part 4 can prevent cold draft more reliably.

  The inclination angle θ with respect to the installation surface 330 (or the installation surface in the room) of the inclined portion 332 can be appropriately selected in the range of less than 90 °. As the inclination angle θ approaches 90 °, it becomes closer to the vertical wall, which tends to cause the above-mentioned increase in pressure loss, and as it approaches 0 °, it becomes difficult to obtain the above-described effect of restricting upward. Although the inclination angle θ depends on the outer size of the case 3, the outer size of the heat generating body 2, the outer diameter d of the fin portion 22, etc., for example, about 40 ° to 75 °, and further about 45 ° to 70 ° It can be mentioned.

It is preferable that the air guide part 4 is provided in the wall part (here, the wall parts 31 and 32) in which the inlet 3i is provided, overlapping with the formation area of the inlet 3i. In this example, when the formation regions of the air inlets 3i and 3i in the wall portions 31 and 32 are seen through in the width direction of the case 3 toward the air guiding portions 4 and 4, the outer shape of the air guiding portions 4 and 4 is It is sufficiently larger than the formation region 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 air inlet 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 air inlet 3i (See also the right area of Figure 4). The upper end portion of the air guide portion 4 is located below the lower end edge of the heat generating body 2 and is located sufficiently above the upper end portion of the intake port 3i (FIG. 2). Therefore, the cold air introduced from one of the wall portions disposed on the window w side, for example, the air inlet 3i of the wall portion 31 of FIG. 2 is located above the air guide portion 4 (sloped portion 332) near the wall portion 31. It is easy to continue to rise from the upper end portion of the air guide portion 4 toward the heating element 2 side which is a relatively high temperature and low density region. Since the region closer to the other wall 32 closer to the inclined portion 332 is a relatively low temperature and high density region, the cold air is less likely to descend along the inclined portion 332 closer to the other wall 32. As in this example, by providing the air guide portion 4 corresponding to the entire length of the intake port 3i, the cold air introduced to the inside of the case 3 on the window portion w side is opposite to the window portion w. It can prevent flowing out from the inlet 3i on the opposite side to the window part w through the inclined part 332 of the.

  Furthermore, since the air guide part 4 of this example serves as the bottom part 33, reduction of the number of parts of case 3 and weight reduction can be achieved. Further, in this example, a triangular prism-like gap corresponding to the mountain-shaped air guide portions 4, 4 is provided between the bottom portion 33 and the installation surface of the room, and the bottom portion 33 is partially raised. This gap makes it easy to avoid problems such as condensation water collecting between the bottom 33 and the indoor installation surface. The width of the installation surface portion 330 can be appropriately selected as long as the inclined portion 332 forming the air guide portion 4 is appropriately provided. The installation surface portion 330 can be omitted (see the modification (6) described later). The bottom 33 may be constructed of a flat plate or the like, and may be fixed to the bottom 33 separately from the bottom 33 by providing the mountain-shaped air guide portions 4 and 4 described above.

  In addition, the bottom 33 of this example is provided with a pedestal 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 upper end edges of both inclined portions 332, 332. It projects in the width direction of case 3 from the part. If the heat insulating portion 24 can be supported, the amount of protrusion from the intersection in the pedestal portion 334 may be small, and adjustment may be made within a range that does not obstruct 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 is shaped like an elongated rectangular plate material curved in an arc shape. The top surface portion 34 is disposed apart from the upper end edge of both the 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 end edge among the opening edges of the warm air discharge ports 3o and 3o.

  Further, 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 beyond the upper end edges of the wall portions 31 and 32. Therefore, when the case 3 is viewed from the top, the inside of the case 3 is hidden by the top surface portion 34 and can not be seen. This configuration makes it easy to prevent dust and foreign matter from entering the case 3 from the upper side of the case 3.

<Intake port and warm air exhaust port>
In this example, the air inlets 3i and 3i and the warm air outlets 3o and 3o are provided in the wall portions 31 and 32, respectively, as described above. Therefore, regardless of which wall 31 or 32 is installed toward the window w, the air inlet 3i and the warm air outlet 3o may be opened obliquely upward or laterally toward the window w. it can. The specifications (size, shape, formation position, etc.) of the air inlets 3i, 3i provided in the respective wall portions 31, 32 and the specifications of the warm air discharge ports 3o, 3o can be made different from each other. If the portions 31, 32 have axisymmetrical shapes and the specifications of the air inlets 3i, 3i and the specifications of the warm air outlets 3o, 3o are equal, it is easy to obtain the cold draft preventing effect and the appearance as described above.

  Each intake port 3i, 3i, and each warm air exhaust port 3o, 3o of this example is a horizontally long rectangular through hole which is continuous with the longitudinal direction of the case 3 and extends over the entire length of the wall portions 31, 32. Such an intake port 3i and a warm air discharge port 3o tend to have a large opening area with respect to the size of the window w, and it is easy to secure a large intake amount of cold air and a large exhaust amount of warm air. In addition, it can be set as the small hole group which collected several small through holes instead of one continuous through hole (refer the modification (8) mentioned later).

  The sizes of the intake port 3i and the warm air exhaust port 3o (the total size in the case of a small hole group) are also determined by the amount of heat generation of the heat generating element 2, the height position of the heat generating element 2, and the external size of the case 3. However, for example, the lengths of the intake port 3i and the warm air exhaust port 3o may be equal to or longer than the total length of the heating element 2. In this case, it is easy to secure a large intake of cold air and a large discharge of warm air. The length of the air inlet 3i and the warm air outlet 3o can be made shorter than the total length of the heating element 2, but if it is 50% or more, further 60% or more, 70% or more of the total length of the heating element 2, warm air is formed. Easy to do and preferred.

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 Can be mentioned. If the heights Hi and Ho are not too small, the amount of intake of cold air and the amount of discharge of warm air can be appropriately secured. If the heights Hi and Ho are not too large, it is easy to form warm air and it is easy to appropriately obtain a cold draft preventing effect. In addition, the rigidity of the case 3 can be easily enhanced by not being too large.

  Although the size of the inlet 3i and the size of the warm air outlet 3o can be made different, preferably they are substantially equal. In the case where they are different from each other, for example, if the size of the warm air discharge port 3o is slightly smaller than the size of the air inlet 3i, it is expected that the flow rate of the warm air can be easily increased.

  In this example, since the lower end edge of the intake port 3i 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 1A can efficiently introduce cold air from the side of the window portion w, which is low in temperature and relatively large in density, and easily flows downward, into the case 3.

<Size of each part>
In the case 3, the wall portions 31 and 32, the bottom portion 33, and the top surface portion 34, which are main portions of the case, have lengths, widths, and heights capable of storing the heating element 2 and the fin portion 22.

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

The height position of the intake port 3i from the installation surface of the heater device 1A (here, generally corresponding to the outer surface of the installation surface portion 330 of the bottom 33) and the height position of the heating element 2 from the installation surface of the heater device 1A Affects the formation of cold air intake and warm air. 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. 20% or less of the height position height H _3, an intake port 3i is positioned below the casing 3, easily secured formation region of the warm air into 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 It 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. Not more than 70% of the height position height H _3, the heat generating element 2 is not too distant from the installation surface of the chamber, easy to secure the formation region of the warm air into 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 axis of the heat generating element 2 satisfies the above range, and the lower end position of the heat generating element 2 (here, the lower end position of the fin portion 22) is positioned higher than the height position of the upper end edge of the intake port 3i. Thus, the size of the heating element 2 may be adjusted.

  If both the height position of the intake port 3i and the height position of the axis of the heat generating element 2 satisfy the above range, cold air can be sucked well and warm air can be formed well, resulting in a chimney effect. It is considered to be easy to obtain, and cold draft can be prevented more reliably.

The height _{H 3} of the case 3, and greater than the width W of the case 3 _(H 3> W), for example, when such a height _{H 3} of more than 1.5 times the width W, elongated casing 3 becomes liable The chimney effect is more easily obtained, which is preferable. The width W of 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.

  As the distance between the heating element 2 and the inner surfaces of the wall portions 31 and 32 is smaller, the vertically long case 3 is easily formed, and the chimney effect is easily obtained as described above. If the distance is large to some extent, the thermal insulation between the heating element 2 and the wall portions 31 and 32 can be enhanced, and excessive heating of the wall portions 31 and 32 can be easily avoided. In this example, since the fin portion 22 intervenes between the heating element 2 and the wall portions 31 and 32, it is easy to secure the above-mentioned interval large. Further, in this example, since the heat insulation portion 24 is provided to enhance the above-described thermal insulation, as shown in FIG. 2, the distance between the fin portion 22 and the inner surface of the wall portions 31 and 32 is approximately the thickness of the heat insulation portion 24. To narrow down. Even if it is narrow like this, the cold air introduced into the case 3 can flow along the spirally provided fin portion 22 and can contact the heating element 2, and the warm air formed by heating is on the warm air outlet 3o side. It 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 the one intake port 3i to the one warm air exhaust port 3o through the heating element 2 is the opening of the intake port 3i It is considered that the chimney effect can be more easily obtained by adjusting the size of each part of the main part of the case so that the area is approximately equal. As the size of each part, the opening area of the inlet 3i and the warm air outlet 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 22 and the heating element 2 The height H ₂ from the installation surface 330 (or the installation surface in the room), the inclination angle 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 etc. .

<End plate and end cover>
The end plate 35 is a member that closes both ends in the longitudinal direction in the cylinder formed by the main part of the case as described above. With the end plate 35 and the main part of the case excluding the air inlet 3i and the warm air outlet 3o to make the case 3 substantially closed, the heater device 1A introduces the cold air into the case 3 and forms the warm air. Efficiently.

  The end plate 35 in this example functions not only as a support for supporting the heating element 2 at a predetermined position of the case 3 but also as a connecting member for integrating the main part of the case. Each member of the case main part is provided with a mounting piece (not shown) provided with a fastening hole such as a bolt hole or a screw hole, and the end plate 35 is provided with 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 tightening a fastening member such as a bolt or a screw. Further, the end plate 35 is provided with a mounting portion (not shown) provided with a fixing hole of the heating element 2, and the end of the shaft of the heating element 2 is inserted into the fixing hole and appropriately fixed. The rod-shaped heating element 2 is supported between the end plates 35, 35 of FIG. A bottom surface (not shown) disposed on the installation surface in the room extends to the end plate 35, and the end plate 35 and the bottom surface form a continuous L-shaped member. The end plate 35 is a vertically long isosceles triangle corresponding to the cross-sectional shape of the main part of the case, and the bottom is rectangular.

  The case 3 in this example includes end covers 36 and 37 for housing the end plate 35. The basic configuration of each end cover 36, 37 is similar, and includes 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, each of the end portion covers 36, 37 forms a vertically elongated isosceles triangular internal space. For the internal space, the overturn OFF switch (refer to what is virtually shown by an alternate long and two short dashes line in the end cover 37 in FIG. 4 is shown, and in FIG. 6), the connection portion between the cord 39 and the heating element 2 and the control unit 5 (refer to the end cover 36 in FIG. 4) can be used for storage. Although the end covers 36 and 37 may be omitted and only the end plate 35 may be provided, when the end covers 36 and 37 are provided and the above-mentioned connection places and the like are stored, the appearance is excellent and the design can be enhanced. In addition, it is good to provide a through-hole and a notch in the drawing-out location of the code | 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 have engaging portions or the like that engage with each other, or the end covers 36 and 37 have a recess or the like into which the vicinity of the edge of the case main portion is inserted It is easy to maintain the integrated state more firmly.

<Material of composition>
The constituent material of case 3 typically includes non-metals such as aluminum and its alloys, metals such as iron-based materials such as steel and stainless steel, and resins. The metal case 3 is excellent in heat resistance and strength. The resin case 3 is easy to be lightweight. In this example, the main part of the case 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 a combination of a plurality of divided pieces as in this example, the state in which the heat generating element 2 is accommodated can be easily constructed, and the manufacturability is excellent. The number of divisions and the division position can be selected as appropriate. The above-described fastening member, a bonding member such as an adhesive, or the like can be used to connect the divided pieces.

  In addition, when the case 3 is provided with the reinforcing member 38 of an appropriate shape at an appropriate position as shown in FIG. 2, the rigidity can be enhanced even if the case 3 is long and elongated. In FIG. 2, an inverted T-shaped reinforcing member 38 connecting the wall portions 31 and 32 and the top surface portion 34, the wall portions 31 and 32, and the air guiding portions 4 and 4 (inclined portions 332 and 332) The case where it provides with the reinforcements 38 and 38 which connect B.

(Installation configuration)
The case 3 of this example is a direct installation type in which a part of the case 3 is brought into direct contact with the surface on which the heater device 1A is installed in the room (the installation surface of the room) (FIG. 3). In this example, the lower end surfaces of the peripheral wall portions of the end covers 36 and 37 slightly protrude further than the installation surface 330 toward the indoor installation surface. Therefore, the lower end surface of the peripheral wall portion of the end cover 36, 37 directly contacts the installation surface of the room, and the installation surface 330 of the bottom 33 is installed indoors with the slight protrusion of the end cover 36, 37 described above. It is closely arranged with a very slight gap (0.5 mm or less, further 0.3 mm or less) with respect to the surface. This slight gap can prevent the edge of the metal forming the bottom 33 and the like from coming into contact with the indoor installation surface. With such a very slight gap, it is possible to substantially prevent the cold air from the window w side from flowing out to the central portion side of the room through the gap. Moreover, it is easy to avoid problems such as condensation water accumulating between the installation surface portion 330 having a relatively large area and the installation surface of the room.

(Installation location)
In the heater device 1A of the first embodiment, as described above, the floor surface 100 in the room under the window portion w, the shelf surface directly under the window (not shown), and the window In the case of (1), it is installed and used on the top plate surface (not shown) of a bay window.

(Usage condition)
The user installs the heater device 1A below the window w as shown in FIG. 3, for example, when cold air from the window w side is concerned. Specifically, one wall of the case 3, in FIG. 3, the wall 32 on the window w side and the other wall 31 on the indoor side opposite to the window w, in the longitudinal direction of the window w Install heater device 1A along. 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 longitudinal direction of the window w. Although in FIG. 3 there is a large gap between the side wall 102 of the building having the window w and the wall 32 for convenience of explanation, it is considered preferable to install the heater device 1A as close as possible to the window 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. The warm air generated by the heating has a low density and is discharged upward from the warm air discharge port 3o provided above the case 3 (see the broken arrow in FIG. 3). On the other hand, since the cold air from the window w side has a large density, it flows downward in the room (see black thick arrow in FIG. 3). Since the lower part in the case 3 is lower in pressure than the case 3 due to the generation and discharge of the warm air, the air inlet 3i located below the wall 32 easily sucks the cold air from the window w side. The cool air introduced into the case 3 flows upward along the air guide 4 (inclined portion 332) from the installation surface 330 (FIG. 2) near the wall 32 in the case 3 and contacts the heating element 2 It is heated and warms up sequentially. The cold air rising above the air guide portion 4 is flowed upward as described above, and it is prevented from flowing downward along the inclined portion 332 closer to the wall portion 31 (two points in FIG. 3). Arrows shown virtually by dashed lines are indicated by crosses). As described above, cold air from the window portion w side is automatically sucked in using the chimney effect to warm the air, and the cold air from the inside of the case 3 is the opening on the indoor side (see FIG. 3). Then, the user can spend comfortably by preventing the outflow through the air inlet 3i of the wall portion 31). In particular, since the heater device 1A of this example is disposed so that the wall portions 31 and 32 form a triangle as described above, it is easy to increase the flow rate of the warm air discharged from the warm air discharge port 3o. When a portion of the warm air discharged vigorously from the warm air discharge port 3o hits the ceiling 103 as shown in FIG. Can be expected to contribute to promoting things. As a result, convection between the cold air flowing downward and the warm air flowing upward is likely to occur, so the cold air from the window part w does not easily flow to the indoor side, and it is expected that the user can spend comfortably. . If the user stops using the heater device 1A because the temperature in the room becomes high, the switch is turned off.

  In addition to controlling the energized state of the heating element 2 by the manual work of the user (switch ON / OFF), it is possible to provide an automatically controllable configuration (for example, a second embodiment described later, a modification) Examples (12) to (15)). When the fall OFF switch is provided, when the heater device 1A falls down, the energization circuit to the heating element 2 can be automatically turned off. More specifically, when the heater device 1A is in a normal installation state, the fall-off switch is pushed by the installation surface of the room to retract into the switch main body and stored in the end cover 37. When the heater device 1A falls over, the bottom surface portion continuous with the above-mentioned end plate 35 is separated from the installation surface of the room, so that the actuating projection protrudes from the end portion cover 37 to turn off the conduction circuit.

(effect)
In the heater device 1A of the first embodiment, the heating element 2 is accommodated over the entire length in the case 3 including the wall portions 31 and 32 and the bottom portion 33, and the lower specific portion and the upper specific portion in the case 3 are opened. It has a specific shape with so-called chimney effect. If such a heater device 1A is used, cold air from the window w can be efficiently and automatically sucked into the case 3 from the air inlet 3i opened toward the window w. In particular, since the heater device 1A includes the air guide portion 4, cold air introduced from the air inlet 3i is likely to flow upward toward the heat generating body 2 side, and the heat generating body 2 is heated. That is, the cold air can be prevented from flowing out of the case 3 without being heated by the heating element 2 and kept at low temperature, and the cold air introduced into the case 3 can be efficiently warmed up. This warm air can warm the window w and warm the cold air from the window w side. Therefore, it is expected that the heater device 1A of the first embodiment can prevent cold draft more reliably than the above-described conventional heater device, and that the effect of making the indoor occupant less likely to feel cold by cold air from the window w side is large. Be done. Further, according to the heater device 1A of the first embodiment, it is possible to expect condensation prevention and indoor humidity reduction prevention using warm air.

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

In addition, the heater device 1A of this example can further reduce the flow of cold air from the window w side to the indoor side from the following point.
(1) It is a direct installation type, and the cold air does not substantially flow out from the gap between the outer bottom surface of the case 3 and the installation surface of the room.
(2) The warm air discharge port 3o is provided in the wall portions 31, 32, and in the installed state of the heater device 1A, it opens toward the window portion w, so the warm air can warm the window portion w efficiently. Condensation can also be prevented more reliably from this point.
(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.

Second Embodiment
The heater device 1B of the second embodiment will be described with reference to FIGS. 4 and 5.
FIG. 4 is a schematic front view showing the inside of the case 3 so that the inside of the case 3 can be seen by cutting a part (left region) of the wall 31 of the case 3.

  The basic configuration of the heater device 1B of the second embodiment is the same as that of the first embodiment, and the heat generating body 2, the wall portions 31 and 32 provided with the inlet 3i and the warm air outlet 3o, and the air guide portion 4 And a case 3 including The heater device 1B of the second embodiment further has a configuration capable of automatically controlling the energization state of the heating element 2 in accordance with the illuminance from the window. Specifically, the heater device 1B includes the illuminance sensor 6 and the control unit 5 that adjusts the output of the heating element 2 based on the information from the illuminance sensor 6. Hereinafter, the illuminance sensor 6 and the control unit 5 will be described in detail, and the same configurations and effects as those of the first embodiment will not be described in detail.

  The illuminance sensor 6 is used to measure the illuminance based on the sunlight from the window. A commercially available product can be used as the illuminance sensor 6. For example, it is easy to use one in which a detection unit for detecting the illuminance and a conversion unit for converting the output of the detection unit into a digital value by A / D conversion are integrated. The detection unit and the conversion unit may be independently provided. If the output of the illuminance sensor 6 can be input to the control unit 5 as a digital value, the control unit 5 can easily perform calculations, and the control unit 5 can be easily configured. When the illuminance sensor 6 is disposed, for example, above the case 3, it is easy to accurately measure the illuminance based on the sunlight from the window. The case 3 is provided with a window for light reception. In FIG. 4, the case where the illumination intensity sensor 6 is provided above the end cover 37 is illustrated. When the illuminance sensor 6 is provided on the resin end cover 37 or the like, it is easy to form a light receiving window.

  As shown in FIG. 5, the control unit 5 includes, for example, an input unit (not shown) for inputting various types of information, and an illuminance determination unit 56 which makes a determination based on input information from the illuminance sensor 6 and stored information. The storage unit 50 stores input information such as setting values and the like, and the energization command unit 51 which issues a command to the heating element 2 based on the determination result, and may be 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 the threshold (setting value) called from the storage unit 50 to determine the magnitude of the illuminance. When the illuminance is smaller than the threshold value, it is considered that the sunlight hitting the window is not sufficient, the temperature at the window and its vicinity is relatively low, and cold air is flowing from the window side toward the central part of the room . In this case, in order to prevent a cold draft etc., the change of electricity supply to the heating element 2 and electric power is desired. Therefore, the energization command unit 51 issues an energization start command to the heating element 2 and a change command of supplied electric power for increasing the energization power. On the other hand, when the illuminance is larger than the threshold value, the sunlight hits the window (for example, daytime on a sunny day), the window and its vicinity are warmed, and there is little cold air from the window side or the cold air is flowing It is not considered. If the illuminance is sufficiently large, energization of the heating element 2 is unnecessary, and the energization command unit 51 issues a stop command. If the illuminance is high to a certain extent, the power supply command unit 51 issues a change command of the supplied power to reduce the supplied power.

  With regard to the start of energization and change of supplied electric power, semiconductor switches such as a TRIAC and a thyristor are provided to be able to switch energization continuation (ON) and energization stop (OFF) to the heating element 2, and to perform duty control etc. And 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, and 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 having a value of.

Specific control contents include, for example, the following. In addition, although two threshold values A and B are used for convenience of explanation, a threshold value can be made more and the control content can be subdivided.
(Α) When changing the supplied power to a%, b% and c% of the total output (a>b> c)
When the illuminance is larger than the threshold A, the amount of sunshine is very large, so the c% output of the supplied power is made, and the supplied power is reduced.
When the illuminance is larger than the threshold B (however, B <A), since the amount of sunshine is large to a certain extent, the supplied power is set to b% output, and the supplied power is reduced to some extent.
When the illuminance is equal to or less than the threshold B, the amount of sunshine is small, so the supplied power is set to be a% output, and the supplied power is increased.
(Β) When Turning ON / OFF the Energizing Circuit to the Heating Element 2 When the illuminance is larger than the threshold A, the amount of sunshine is very large, so the energizing circuit is turned OFF.
When the illuminance is larger than the threshold B (however, B <A), since the amount of sunshine is large to a certain extent, the supplied power 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 sunshine.
When the illuminance is equal to or less than the threshold B, the amount of sunshine is small, so the energizing circuit is turned on.

  Heater device 1B of Embodiment 2 performs energization control of heating element 2 automatically according to the illumination intensity from a window part. Therefore, if the heater device 1B is used, cold draft and condensation can be prevented, and unnecessary operation time can be reduced, and increase in power consumption due to forgetting to switch off can be reduced, and energy saving can be expected. It can also be expected to reduce the increase in electricity charges. If the power supplied to the heating element 2 can be adjusted in multiple stages according to the illuminance, further reduction of power consumption can be expected while cold draft and condensation can be prevented. Further, since the heater device 1B is automatically controlled, the user does not have to perform complicated operations, and is easy to use.

  As described above (α) and (β), the power supplied to the heating element 2 is controlled irrespective of the actual temperature in the vicinity of the warm air outlet 3o in the case 3 and the actual temperature in the vicinity of the inlet 3i. Although it is possible, if the output control of the heating element is performed in consideration of the above temperature, it is easy to adjust the temperature of the warm air to a more appropriate temperature. Such a heater device 1B includes a temperature sensor 7 that measures at least one of the temperature of warm air discharged from the warm air discharge port 3o and the temperature of air taken in from the air intake port 3i. The output of the heating element 2 is adjusted based on the information from the temperature sensor 7 and the temperature sensor 7.

  The temperature sensor 7 is used to measure the temperature serving as a judgment index of the output of the heating element 2 capable of forming warm air necessary for cold draft prevention and condensation prevention, specifically, the temperature of warm air and the temperature of cold air. The 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. To measure the temperature of the warm air, place the temperature sensor 7 in the vicinity of the warm air outlet 3o in case 3 (see also FIG. 2), and in the case 3 in the case 3 to measure the temperature of cold air. Can be mentioned. In this case, it is easy to measure warm air and cold air with high accuracy, 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, for example, a temperature determination unit 57 that makes a determination based on input information from the temperature sensor 7, stored information, and the like. Then, temperature information from temperature sensor 7 is input as needed, and temperature determination unit 57 compares the temperature information with the threshold value (set value) called from storage unit 50, and uses the determination result based on temperature and the above-mentioned illuminance. The control unit 5 may be configured to determine the control contents to the heating element 2 by comprehensively judging the judgment result based on the judgment. Alternatively, the control unit 5 may be configured to finely adjust the supplied electric power based on the temperature information from the temperature sensor 7 during the control based on the determination result based on the above-described illuminance. Such control can prevent cold draft and condensation while reducing waste of power consumption.

Specific control contents in consideration of the measured illuminance and temperature include, for example, the following. Here, a case where the supplied power is changed such that the temperature of the warm air reaches a predetermined set temperature is exemplified.
(Γ) When changing the preset temperature T of warm air to x ° C, y ° C, z ° C (x>y> z)
When the illuminance is larger than the threshold A, since the amount of sunshine is very large, the set temperature T is changed to z ° C., and the supplied power is reduced so that the warm air becomes z ° C. The control unit 5 obtains, for example, 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 the threshold (set value) It may be configured to determine the adjustment amount of the supplied power based on the result. The control unit 5 may be configured similarly in the following two cases.
When the illuminance is larger than the threshold B (however, B <A), the setting temperature T is changed to y ° C., and the supplied power is decreased to some extent so that the warm air is y ° C.
When the illuminance is equal to or lower than the threshold B, the amount of sunshine is small, so the set temperature T is changed to x ° C., and the supplied power is reduced so that the warm air becomes x ° C.
As in the control of (α) described above, besides controlling the output of the supplied power as a constant value, it is possible to perform control that is variable in multiple stages as follows.
(Δ) When changing the preset temperature T of warm air to x ° C., y ° C., z ° C. (x>y> z)
When the illuminance is larger than the threshold A, the setting temperature T is changed to z ° C because the amount of sunshine is very large, and the supplied power is c% output for a predetermined time t so that the warm air becomes z ° C. , B% output power supply. The control unit 5 sets, for example, a plurality of threshold values used for the comparison determination of the above-mentioned temperature difference, and according to the comparison result, as a predetermined time t or an output ratio of supplied power (here, a% to c%) It may be configured to select an appropriate value. The control unit 5 may be configured similarly in the following two cases.
When the illuminance is larger than the threshold B (however, B <A), the setting temperature T is changed to y ° C because the amount of sunshine is to some extent, and the warm-up becomes y ° C for a predetermined time t As an output, after t hours, the supplied power is a% output.
When the illuminance is equal to or less than the threshold B, the amount of sunshine is small, so 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 unit 5 can be configured to measure the integrated sunshine amount within a predetermined measurement time, and to make the output of the heating element 2 smaller than the current value when the integrated sunshine amount is equal to or more than a predetermined value. Here, when the window is warmed by sunlight, the vicinity of the window can be kept warmed to a certain extent, and cold air from the window to the central portion of the room is less likely to be generated. Therefore, the amount of sunshine is measured at appropriate intervals, this measurement result is integrated for a predetermined measurement time, and when the integrated value is large to a certain extent, the output of the heating element 2 is reduced or the current flow is stopped. Then, the power consumption can be further reduced. For example, the control unit 5 compares a sunshine amount calculating unit (not shown) that calculates an integrated sunshine amount within a predetermined measurement time with the calculated integrated sunshine amount and a threshold (setting value) called from the storage unit 50. And an integrated sunshine amount determination unit 58. If the integrated sunshine amount is larger than the threshold, the window is sufficiently warmed, and it is considered that cold air from the window does not easily occur. Issue a change command to reduce the supply power. On the other hand, if the integrated sunshine amount is smaller than the threshold value, the energization command unit 51 issues a command for maintaining the current energization state. Depending on the threshold value, the controller 5 may be configured to issue a stop command after energization for a predetermined time. The specific control contents can be referred to the above (α) to (δ).

  In addition, as the illuminance sensor 6, one that performs analog output can be used, and the ON / OFF of the energization circuit to the heating element 2 can be directly performed. In this case, when the illuminance sensor 6 detects a certain amount of sunshine, control is performed to turn off the energizing circuit. The illuminance sensor 6 may be, for example, a resistor such as a CdS sensor whose electric resistance changes in accordance with the intensity of light. The use of a mechanical relay, a bimetal switch or the like can be mentioned as ON / OFF of the energizing circuit.

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

For example, at least one of the following modifications can be made to Embodiments 1 and 2, and the like.
(Modification)
(1) The heating element 2 is an assembly in which a plurality of strip-shaped ones are separated and arranged in parallel.
In this case, for example, the air inlet 3i may be provided only in one wall 31 and the upper end of the inclined portion 332 may be provided in proximity to or in contact with the inner surface of the other wall 32. When the cool air introduced from the air inlet 3i flows along the inclined portion 332 forming the air guide portion 4, it flows upward by coming into contact with the inner surface of the other wall portion 32, and between adjacent strip plate-like heat generating members It is heated by entering the lower opening provided in the The air guide portion 4 is provided so as to cover the lower opening, so the cold air tends to flow upward between the strip-like heat generating members, and flows out of the case 3 without being heated by the heat generating members. Can be prevented.

(2) The top surface portion 34 is provided with a through hole.
By using this through hole as the warm air discharge port 3o opened upward toward the ceiling in the room, even when the height of the window part w is large, etc., a flow of air in which cold air and warm air are circulated is formed. It is considered easy to do.

(3) The top surface portion is not provided, and the upper end edges of both the wall portions 31 and 32 form the periphery of one warm air discharge port 3o.
In this case, the warm air discharge port 3o opens upward toward the ceiling of the room and tends to have a relatively large open 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 cold air and warm air are circulated. If a grid plate or the like is disposed at the warm air discharge port 3 o, it is easy to prevent dust and foreign matter from entering the case 3. In this embodiment, by aligning the height positions of the upper end edges of both the wall portions 31 and 32, it is possible to obtain a line-symmetrical appearance.

(4) The air inlet 3i and the warm air outlet 3o are provided only in one wall 31 and the air inlet 3i and the warm air outlet 3o are not provided in the other wall 32, and the wall 32 has a bottom 33 and a ceiling It is provided continuously to 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 an outflow prevention member of the cold air to the outside of the case, and it is more effective that the cold air flows out of the case 3 through the inside of the case 3. Can be prevented. This form has a non-linearly symmetrical appearance about the center line C.

(5) When the wall portions 31 and 32 have the air inlet 3i and the warm air outlet 3o, the heights of at least one of the air inlet 3i and the warm air outlet 3o differ in the wall portions 31 and 32.
This form has a non-linearly symmetrical appearance about the center line C.

(6) The bottom portion 33 substantially does not have the mounting surface portion 330, and the lower end edge of the inclined portion 332 forms the lower end edge of the air inlet 3i. That is, the bottom portion 33 is substantially formed of the sloped portion 332, and is shaped like a mountain in a side view (or cross section).
In this case, since the bottom 33 can easily make a contact area with the installation surface in the room smaller and a triangular prism-like gap can be sufficiently provided between the installation surface in the room, dew condensation water adheres to the outer surface of the bottom 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 flat flat plate materials, and one wall portion 31 is disposed to be inclined so as to intersect the center line C, and the other wall portion 32 is arranged to the center line C Arranged in parallel. That is, the case 3 has a right-angled trapezoidal cross-sectional shape.
In this case, it is possible to provide the intake port 3i and the warm air discharge port 3o only in the one wall portion 31 disposed in an inclined manner. This form has a non-linearly symmetrical appearance about the center line C.

(8) At least one of the intake port 3i and the warm air discharge port 3o is not set as one continuous through hole, but a small hole group in which a plurality of small through holes are spaced apart and arranged.
In this case, the lower end edge region and the upper end edge region of the wall portions 31 and 32 have a comb shape, and the lower end edge and the upper end edge of the wall portions 31 and 32 are continuous with the bottom portion 33 and the top surface portion 34 , 32 in the lower end edge region and the upper end edge region, or the like. If a plurality of small hole groups are used, it is easy to prevent dust and foreign matter from being mixed into the case 3 from the intake port 3i and the warm air discharge port 3o. In addition, the rigidity of the case 3 can be easily increased to some extent.

(9) The wall portions 31 and 32 are flat flat plate members and arranged in parallel. That is, the case 3 has a rectangular shape.
In this case, the shape of the case 3 is simple and the manufacturability of the case 3 is excellent, and in addition, it is easy to maintain a stable installation state. In this embodiment, since the distance between the wall portions 31 and 32 is substantially uniform from the lower end edge to the upper end edge of the wall portions 31 and 32, the wall portions 31 and 32 are formed so as to have a vertically long rectangular shape. Adjusting the height etc. can easily enhance the chimney effect.

(10) A leg (not shown) is provided which protrudes from the bottom 33 of the case 3 toward the indoor installation surface.
In this case, the position of the bottom 33 can be made higher than the installation surface of the room according to the protruding height of the leg, dew condensation water adheres to the outer surface of the bottom 33, or the space between the outer surface of the bottom 33 and the installation surface of the room It is easy to avoid problems such as accumulation of dust. The height of the legs may be 3 mm or more. However, the height of the leg is 15 mm or less, because there is a possibility that cold air from the window w side may flow out toward the central portion of the room by utilizing the gap between the leg and the installation surface of the room. Furthermore, 10 mm or less, 8 mm or less, 5 mm or less is preferable. If the legs are screw-typed and height-adjustable, they can be brought close to a direct mounting type as required. In addition, since the heater device 1A and the like have a gap between the installation surface of the room and the indoor surface by the air guide portion 4 as described above, the above-mentioned problems can be easily avoided even if there is no leg portion.

(11) At least one of the end covers 36 and 37 is provided with an extension wall (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 on the indoor installation surface, and prevents cold air from the window portion w side from flowing to the central portion side of the room. A flat plate material etc. can be used for the extension wall part. When the extension wall portion is attached to the end cover 36, 37 or the like by a hinge or the like, the extension wall portion can be folded when not in use, and the opening angle can be easily changed. Alternatively, the extension wall portion can be configured to be removable.

(12) A temperature sensor 7 provided in the case 3 and a control unit for controlling the energization state of the heating element 2 based on temperature information from the temperature sensor 7 are provided.
The temperature sensor 7 may be provided in the vicinity of the warm air discharge port 3 o or in the vicinity of the air inlet 3 i in the case 3 as described above. 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 the second embodiment). Temperature information from the temperature sensor 7 is input as needed. The temperature determination unit 57 compares the temperature information with the threshold (setting value) called from the storage unit 50. If the temperature in the vicinity of the warm air discharge port 3o or in the vicinity of the intake port 3i is smaller than the threshold value, the energization command unit 51 issues a change start command to the heating element 2 or a supply power change command to increase the supplied power. On the other hand, when the temperature is higher than the threshold value, the power supply command unit 51 issues a stop command or a change command of supplied power to reduce the supplied power. The specific control contents can be referred to the above (α) to (δ).

(13) A temperature sensor 7 provided in the case 3, a receiver capable of receiving temperature information from another temperature sensor provided at a position away from the window 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, it is preferable that the temperature sensor 7 be disposed in the vicinity of the intake port 3i so that the temperature of the cold air can be measured.
As the temperature sensor provided on the indoor side separately from the temperature sensor 7, for example, one incorporated in a device including a transmission unit capable of transmitting the measured temperature information to the control unit can be mentioned. Examples of such a device include an indoor air conditioner, an electric heater, and the like, which are controlled by a system that manages the state of use of an electrical product, such as a home energy management system (HEMS).
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 makes a determination based on the calculation result, a storage unit 50, and a power supply command unit 51. Can be mentioned as follows (see also the second embodiment). The input unit inputs the above two temperature information as needed. The temperature difference calculation unit calculates the temperature difference between the temperature near the air inlet 3i (a temperature considered to be close to the temperature at the window) and the temperature on the indoor side from the temperature information. The determination unit compares the temperature difference with the threshold (setting value) called from the storage unit 50. When the temperature difference is larger than the threshold value, typically, the temperature at the window is low, and it is considered that cold air flows from the window portion w toward the central portion of the room. Therefore, the energization command unit 51 issues an energization start command to the heating element 2 and a change command of supplied electric power to increase the energization power. On the other hand, when the temperature difference is smaller than the threshold, it is considered that there is little cold air from the window side or no cold air from the window side. Therefore, the energization command unit 51 issues a stop command or a change command of the supplied power to reduce the supplied power. The specific control contents can be referred to the above (α) to (δ).

(14) A communication unit that communicates with the management system such as the HEMS described above, and a control unit that controls the energization state of the heating element 2 based on an instruction 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 can be configured as follows (see also the second embodiment). 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 above information. The energization command unit 51 issues an energization start command to the heating element 2, a change command of the supplied electric power, or a stop command based on the determination result.

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

[Supplementary note]
As a heater device which can prevent a cold draft other than the above-mentioned Embodiments 1 and 2 and a modification, it can be considered as the following composition, for example.
[Supplementary Note 1]
A heating element that generates heat by energization;
A case which accommodates the heating element over its entire length and has an intake port provided at a lower position than the lower end of the heating element, and a warm air discharge port provided at an upper position than the upper end of the heating element;
Illuminance sensor,
And a controller configured to adjust an output of the heating element based on information from the illuminance sensor.
[Supplementary Note 2]
A temperature sensor for measuring at least one of the temperature of the warm air discharged from the warm air outlet and the temperature of the air taken in from the air inlet;
The heating device according to [Appendix 1], wherein the control unit adjusts the output of the heating element based on the information from the illuminance sensor and the information from the temperature sensor.
[Supplementary Note 3]
The control unit measures an integrated sunshine amount within a predetermined measurement time, and controls the output of the heating element to be smaller than the present when the integrated sunshine amount is a predetermined value or more [Supplementary Note 1] or [Supplementary Note 2].
The specific configuration and the like of the heating element and the case may be referred to Embodiment 1 described above. It is good to refer to the above-mentioned Embodiment 2 for the concrete control provided with an illumination intensity sensor and a temperature sensor suitably, its effect, etc.

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

Claims (12)

A heating element that generates heat by energization;
And a case for storing the heating element over the entire length of the case;
The case is
A pair of wall portions arranged to sandwich the heating element over the entire length thereof;
A bottom covering the lower side of the heating element over its entire length;
An air inlet provided at a position lower than the lower end of the heat generating member in at least one of the pair of wall portions;
A warm air outlet provided above the upper end of the heat generating body in the case;
A heater configured to be provided in the case and for guiding air taken into the case from the air intake port to the heating element side.   The heater device according to claim 1, wherein the pair of wall portions are arranged such that the distance between the wall portions is narrowed from the lower end side toward the upper end side. The height position of the upper end 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 device according to claim 1 or 2, wherein the height position of the shaft of the heat generating body is in the range of 30% to 70% of the height of the case from the installation surface.   4. The air guide portion according to any one of claims 1 to 3, wherein the air guide portion includes an inclined portion which inclines upward from the lower end edge disposed on the air inlet side toward the upper end edge disposed on the heat generating body side. Heater device as described. Each of the pair of wall portions includes the air inlet;
The heater device according to any one of claims 1 to 4, wherein the air guide portion is provided to overlap the formation region of the air inlet in each wall portion.   The heater device according to claim 5, wherein in the cross section obtained by cutting the case in a plane orthogonal to the longitudinal direction, the pair of wall portions have an axisymmetric outline.   The heater device according to claim 6, wherein in the cross section, the air guide portion has a line-symmetrical outer shape.   The heater device according to any one of claims 1 to 7, wherein the air guide portion doubles as the bottom portion. Illuminance sensor,
9. The heater device according to any one of claims 1 to 8, further comprising: a control unit that adjusts an output of the heating element based on information from the illuminance sensor. A temperature sensor for measuring at least one of the temperature of the warm air discharged from the warm air outlet and the temperature of the air taken in from the air inlet;
The heater device according to claim 9, wherein the control unit adjusts an output of the heating element based on the information from the illuminance sensor and the information from the temperature sensor.   10. The control unit measures an integrated sunshine amount within a predetermined measurement time, and controls the output of the heating element to be smaller than the present when the integrated sunshine amount is a predetermined value or more. The heater apparatus of claim 10.   The heater device according to any one of claims 1 to 11, wherein a calorific value of the heating element is less than 71.5 W / m.

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