Heating device

Abstract

The heating device comprises a first heater (31), a reflecting plate (42), an air passage (P), a fan (50) and a second heater (32), wherein the first heater (31) provides heat radiation, the reflecting plate (42) reflects heat rays generated by the first heater (31) toward a front surface (12) of a housing (11), the air passage (P) connects an inlet (20) with an outlet (21), the fan (50) is arranged in the air passage (P) and transports air from the inlet (20) toward the outlet (21), and the second heater (32) is arranged in the air passage (P) and heats air flowing in the air passage (P).

Description

Technical Field

[0001] The present disclosure relates to a heating device. Background Art

[0002] The radiation heating machine disclosed in Patent Document 1 comprises a planar heater provided with a heating element, an air duct provided on the back side of the planar heater, and a blower arranged in the air duct. The air duct connects the suction port and the blow-out port, and the air sucked in from the suction port is heated by the planar heater and then blown out from the blow-out port into the room as warm air.

[0003] Patent Document 1: Japanese Patent Publication No. 2006-10156 Summary of the invention

[0004] -Technical problem to be solved by the invention-

[0005] The heating device as disclosed in Patent Document 1 heats the air in the air passage (air duct) using the heat released from the heater to blow out warm air. However, the air in the air passage may not be sufficiently heated by the heating from the heater alone.

[0006] An object of the present disclosure is to improve the heating effect of a heating device using radiant heat.

[0007] -Technical solutions to solve technical problems-

[0008] A first aspect of the present disclosure is a heating device, which includes a shell 11, a first heater 31, a reflecting plate 42, an air inlet 20, a blow-out outlet 21, an air passage P, a fan 50 and a second heater 32, wherein an internal space I is formed in the shell 11, the first heater 31 is arranged in the internal space I to provide radiant heat, the reflecting plate 42 is arranged in the internal space I to reflect the heat rays generated by the first heater 31 toward the front surface 12 of the shell 11, the air inlet 20 is formed on the shell 11 to inhale air in an object space S, the blow-out outlet 21 is formed on the shell 11 to blow air into the object space S, the air passage P is provided in the internal space I to connect the air inlet 20 with the blow-out outlet 21, the fan 50 is arranged in the air passage P to transport air from the air inlet 20 toward the blow-out outlet 21, and the second heater 32 is arranged in the air passage P to heat the air flowing in the air passage P.

[0009] In the first aspect, in the internal space I, the air is heated by the first heater 31. The heated air can be further heated by the second heater 32. Therefore, the heating device 10 can further heat and control the temperature of the air heated by the radiant heat by the second heater 32. Thus, the heating effect of the heating device 10 can be improved.

[0010] According to a second aspect of the present disclosure, in addition to the first aspect, the fan 50 is disposed in the air passage P at a position downstream of the second heater 32 in the air flow.

[0011] In the second aspect, since the fan 50 is disposed closer to the air outlet 21 than the second heater 32, for example, even if a user puts a hand into the air outlet 21, the user will not directly touch the second heater 32. Thus, the user's safety can be ensured.

[0012] According to a third aspect of the present disclosure, based on the first aspect or the second aspect, the air outlet 21 is arranged at a lower portion of the housing 11 , and the fan 50 is arranged at a lower portion of the internal space I.

[0013] In the third aspect, since warm air can be blown to the user's feet, the user's comfort can be improved. In addition, since the thermal influence of the first heater 31 is concentrated on the upper part of the internal space I, the heat load applied to the fan 50 can be reduced by arranging the fan 50 below.

[0014] The fourth aspect of the present disclosure is based on any one of the first aspect to the third aspect, and the heating device includes a first panel 60, the first panel 60 is formed with a hole H, and the heat line emitted from the first heater 31 to the front surface 12 passes through the first panel 60, and the first panel 60 is arranged at the suction port 20.

[0015] In the fourth aspect, the air in the target space S flows into the air passage P via the holes H of the first panel 60. Therefore, the first panel 60 can suck the air in the target space S and provide radiant heat to the target space S.

[0016] In the fifth aspect of the present disclosure, based on the fourth aspect, the heating device includes a second panel 61, and the heat line from the first heater 31 passes through the second panel 61. The second panel 61 is arranged opposite to the first panel 60 in such a way that the heat line from the first heater 31 passes through the second panel 61 and the first panel 60 in sequence.

[0017] In the fifth aspect, the heat emitted from the first heater 31 is absorbed by the second panel 61 , thereby alleviating excessive heating of the first panel 60 .

[0018] The sixth aspect of the present disclosure is based on any one of the first to fifth aspects, wherein the reflecting plate 42 is arranged between the first heater 31 and the rear surface 13 of the shell 11, and the air passage P has a first space 23 and a second space 25, and the first space 23 and the second space 25 are arranged in sequence from the upstream to the downstream of the air flow, the first space 23 is connected to the suction port 20, and the first space 23 includes the space on the front side of the reflecting plate 42, the second space 25 is connected to the blowing port 21, and the second space 25 includes the space on the rear side of the reflecting plate 42, the first space 23 and the second space 25 are connected to each other above the reflecting plate 42, the first heater 31 is arranged in the first space 23, and the second heater 32 and the fan 50 are arranged in the second space 25.

[0019] In the sixth aspect, the air in the air passage P heated by the first heater 31 is further heated by the second heater 32 , so that a decrease in the temperature of the warm air blown out from the blowout port 21 can be suppressed.

[0020] According to a seventh aspect, in addition to any one of the first to sixth aspects, the heating device includes a control unit C having an operation mode for operating at least one of the first heater 31 and the second heater 32 .

[0021] In the seventh aspect, the operation can be switched between the heating operation using radiant heat, the heating operation using warm air, or the heating operation using both radiant heat and warm air.

[0022] According to an eighth aspect, in the seventh aspect, the control unit C starts the operation of the second heater 32 when the heating device starts operating, and starts the operation of the first heater 31 after a predetermined time has passed since the second heater 32 started operating.

[0023] In the eighth aspect, the control unit C operates the heating device by staggering the operation start times of the first heater 31 and the second heater 32 . BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic perspective view of a heating device according to an embodiment;

[0025] Figure 2 is a cross-sectional view at right angles to the left-right direction of the heating device;

[0026] Figure 3 It is a block diagram related to the control unit;

[0027] Figure 4 is a flowchart showing the control flow of the heating suppression operation;

[0028] Figure 5 The heating device according to the first modification Figure 2 Quite a picture;

[0029] Figure 6 The heating device according to the second modification Figure 2 Quite a picture;

[0030] Figure 7 The heating device according to the third modification Figure 1 Quite a picture;

[0031] Figure 8 The heating device according to the third modification Figure 2 Quite a picture;

[0032] Fig. 9 The heating device according to the fourth modification Figure 2 Quite a picture;

[0033] Fig.10 is a flowchart showing the first half of a control flow of a second operation mode of a heating device according to a fifth modification;

[0034] Fig.11 This is a flowchart showing the second half of the control flow of the second operation mode of the heating device according to the fifth modification. DETAILED DESCRIPTION

[0035] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings. It should be noted that the present disclosure is not limited to the embodiments shown below, and various changes can be made without departing from the technical concept of the present disclosure. The drawings are used to briefly illustrate the present disclosure, so in order to facilitate understanding, the size, ratio or quantity is sometimes exaggerated or simplified as needed.

[0036] (1) Overview of heating equipment

[0037] Reference Figure 1 and Figure 2 The heating device 10 according to the embodiment will be described. It should be noted that in the following description, “upper”, “lower”, “front”, “rear”, “right” and “left” refer to the upper and lower sides of the room in principle. Figure 1 The direction indicated by the arrow. Figure 1 , Figure 2 and Figures 5 to 9 The bold arrows shown indicate the direction of air flow.

[0038] The heating device 10 heats the indoor space S as the target space. The heating device 10 is a floor-standing heating device installed on the floor F of the indoor space S. The heating device 10 heats the indoor space S using radiant heat. In addition, the heating device 10 of the present embodiment heats the indoor air of the indoor space S and supplies the heated air to the indoor space S.

[0039] The heating device 10 includes a housing 11 , a first heater 31 , a second heater 32 , a reflection plate 42 , a fan 50 , a front suction part 60 , and a rear suction part 61 .

[0040] (2) Housing

[0041] The housing 11 is formed into a hollow substantially rectangular parallelepiped shape. The housing 11 is made of, for example, a resin material. The housing 11 is formed into a box shape having a long vertical length in the up-down direction. The housing 11 has six surfaces 12, 13, 14, 15, 16, and 17. The six surfaces are composed of a front surface 12, a rear surface 13, an upper surface 14, a lower surface 15, a right surface 16, and a left surface 17.

[0042] The front surface 12 is located at the front side of the housing 11, the rear surface 13 is located at the rear side of the housing 11, the upper surface 14 is located at the upper side of the housing 11, the lower surface 15 is located at the lower side of the housing 11, the right surface 16 is located at the right side of the housing 11, and the left surface 17 is located at the left side of the housing 11. A support member 22 extending in the up-down direction is provided on the inner surface of the right surface 16 and the left surface 17. The support member 22 is a member that supports the first heater 31 and the reflection plate 42 described later in the housing 11.

[0043] like Figure 1 and Figure 2 As shown, an inlet 20 and an outlet 21 are formed on the front surface 12 of the housing 11. The inlet 20 is an opening for inhaling air from the indoor space S. The outlet 21 is an opening for blowing the air in the housing 11 toward the indoor space S. An air passage P is formed in the internal space I of the housing 11, and the air passage P connects the inlet 20 with the outlet 21.

[0044] The outlet 21 is located at the lower part of the casing 11. Specifically, the outlet 21 is located at the lower end of the casing 11. The outlet 21 is located near the floor F of the indoor space S. The outlet 21 extends from the right surface 16 of the casing 11 to the left surface 17 in the left-right direction.

[0045] The suction port 20 is located above the blowout port 21. The suction port 20 is formed from the upper end of the housing 11 to the vicinity of the blowout port 21. The suction port 20 is formed from the right surface 16 to the left surface 17 of the housing 11.

[0046] The housing 11 includes a support plate 39 extending rearward from the lower end of the suction port 20. The support plate 39 extends to the left and right ends of the internal space I. The support plate 39 separates a first space 23 and a second space 25 to be described later.

[0047] (3) First Heater

[0048] The first heater 31 radiates far infrared rays (heat rays). In the heating device 10 of the present embodiment, three first heaters 31 are provided. The number of the first heaters 31 is only an example, and may be one, two or more than four. The first heater 31 is arranged in the internal space I to provide radiant heat. Specifically, each first heater 31 is fixed on the support member 22. Three first heaters 31 are arranged in front of the reflective plate 42. The first heater 31 has a far infrared coating containing ceramic. Each first heater 31 is formed into a tubular or roughly rod-shaped shape extending in the left-right direction. The three first heaters 31 are arranged in the up-down direction along the front surface 12 and the rear surface 13 of the housing 11. The three first heaters 31 are arranged at equal intervals in a state parallel to each other. The heat rays radiated from the first heater 31 are spread over the entire circumference centered on the axis of the first heater 31. The first heater 31 is arranged in the first space 23 described later.

[0049] (4) Second Heater

[0050] The second heater 32 heats the air flowing in the air passage P. The second heater 32 is, for example, an electric heater for heating the air. The electric heater has a thermoelectric element such as a thermistor and a Peltier element. The second heater 32 of the present embodiment is an immersion heater. The second heater 32 has an end cap 33 fixed to the right surface 16 of the housing 11 and a rod-shaped heater body 34 extending from the end cap 33 toward the left surface 17 of the housing 11. By energizing the second heater 32, the heater body 34 generates heat. The air in the air passage P passing through the heater body 34 is heated by the heated heater body 34. The second heater 32 is arranged in the air passage P at a position downstream of the air flow than the first heater 31. Specifically, the second heater 32 is arranged in the second space 25 described later.

[0051] (5) Reflector

[0052] The reflection plate 42 is disposed in the internal space I. The reflection plate 42 reflects heat rays generated from the first heater 31 toward the front surface 12 of the housing 11 .

[0053] The reflecting plate 42 is arranged between the first heater 31 and the rear surface 13. The reflecting plate 42 is opposite to the front surface 12 and the rear surface 13. The left and right ends of the reflecting plate 42 are fixed to the supporting member 22. The lower end of the reflecting plate 42 is fixed to the rear end of the supporting plate 39. A gap is formed between the upper end of the reflecting plate 42 and the upper surface 14. The gap is a connecting path 24 described later.

[0054] The reflecting plate 42 includes three reflecting portions 42a in a roughly arc shape and two connecting portions 42b connecting them. The reflecting portion 42a extends in the left-right direction and has a roughly identical cross-sectional shape in the left-right direction. Specifically, the reflecting portion 42a is formed in a curved surface shape that bulges backward. One reflecting portion 42a is provided corresponding to each first heater 31. The reflecting portion 42a is located on the rear side of the corresponding first heater 31 and opens toward the first heater 31. A reflecting surface R1 is formed on the front surface of each reflecting portion 42a, and the reflecting surface R1 reflects the heat rays of the corresponding first heater 31 forward. The connecting portion 42b is formed in a plate shape extending in the left-right direction and is formed continuously with two reflecting portions 42a adjacent to each other in the up-down direction.

[0055] (6) Fan

[0056] The fan 50 is arranged in the air passage P. The fan 50 conveys the air in the air passage P from the suction port 20 toward the blowing port 21. The fan 50 of this embodiment is a cross-flow fan. Figure 1 As shown schematically, the fan 50 includes a fan body 51 extending in the left-right direction and a fan motor 52 driving the fan body 51 to rotate. The fan 50 is arranged in the internal space I of the housing 11 at a position lower than the first heater 31. The fan 50 is arranged in the air passage P at a position on the downstream side of the air flow than the second heater 32. The fan 50 is arranged in the lower part of the internal space I of the housing 11. Specifically, the fan 50 is arranged near the blow-out port 21. The shortest distance from the first heater 31 to the blow-out port 21 is shorter than the shortest distance from the fan 50 to the first heater 31.

[0057] (7) Front suction component and rear suction component

[0058] The front suction member 60 as the first panel 60 of the present disclosure is formed in a flat plate shape. The front suction member 60 has a plurality of holes H. The front suction member 60 is formed of, for example, a punched plate. The front suction member 60 is formed of a metal material such as SUS. The heat rays from the first heater 31 directed toward the front surface 12 pass through the front suction member 60.

[0059] The front suction member 60 is provided at the suction port 20. Specifically, the front suction member 60 is provided on the front surface 12 of the housing 11 in a manner covering the suction port 20. The front suction member 60 extends from the left end of the suction port 20 to the right end in the left-right direction. A plurality of holes H are formed on substantially the entire surface of the front suction member 60. Therefore, air in the indoor space S can be sucked from substantially the entire surface of the suction port 20. The first panel 60 of this example may also be a mesh member.

[0060] The rear suction member 61 as the second panel 61 of the present disclosure is formed in a flat plate shape. The rear suction member 61 has a plurality of holes H. The plurality of holes H are provided on the entire surface of the rear suction member 61. The rear suction member 61 is made of a metal material such as SUS. The heat rays from the first heater 31 directed toward the front surface 12 pass through the rear suction member 61.

[0061] The rear suction component 61 is arranged relative to the front suction component 60 in such a manner that the heat line from the first heater 31 passes through the rear suction component 61 and the front suction component 60 in sequence. Specifically, the rear suction component 61 is arranged at a position that is more rearward than the front surface 12 of the shell 11 and more forward than the first heater 31. More specifically, the rear suction component 61 is arranged at a position that is closer to the front suction component 60 than the middle of the front suction component 60 and the first heater 31. The lower end of the rear suction component 61 is fixed to the support plate 39. The upper end of the rear suction component 61 is fixed to the upper surface 14.

[0062] The rear suction component 61 is fixed to the shell 11 in a state parallel to the front suction component 60. The rear suction component 61 is opposite to the front suction component 60. The rear suction component 61 is arranged in the first space 23 described later. The height position of the lower end of the rear suction component 61 is approximately equal to the height position of the lower end of the front suction component 60. The height position of the upper end of the front suction component 60 is lower than the height position of the upper end of the rear suction component 61. The entire area of ​​the rear suction component 61 overlaps with the front suction component 60 in the front-to-back direction. It should be noted that, in the present embodiment, the heating device 10 may also be a structure without the rear suction component 61.

[0063] (8) Air passage

[0064] The air passage P is provided in the internal space I of the housing 11. The air passage P communicates the suction port 20 with the blowout port 21. The air passage P includes a first space 23 and a second space 25, which are arranged in sequence from the upstream to the downstream of the air flow. A communication passage 24 is formed between the first space 23 and the second space 25.

[0065] The first space 23 is connected to the suction port 20, and the first space 23 includes the space in front of the reflector 42. Specifically, the first space 23 is formed between the front suction component 60 and the reflector 42. The first space 23 connects the suction port 20 with the upstream end of the connecting path 24. The first space 23 constitutes a flow path for air to flow upward. Each first heater 31 faces the first space 23. The air flowing in the first space 23 is heated by the first heater 31.

[0066] The communication passage 24 is formed above the reflector 42. Specifically, the communication passage 24 is a gap between the upper end of the reflector 42 and the upper surface 14 of the housing 11. In the communication passage 24, the air flow toward the upper side turns around and becomes the air flow toward the lower side. In this way, the first space 23 and the second space 25 are connected to each other above the reflector 42.

[0067] The second space 25 is connected to the blow-out port 21, and the second space 25 includes a space on the rear side of the reflecting plate 42. Specifically, the second space 25 has a space between the reflecting plate 42 and the rear surface 13 of the housing 11 and a space between the support plate 39 and the lower surface 15. A fan 50 is arranged in the second space 25. The fan 50 is arranged in the second space 25 at a position lower than the first heater 31. The second space 25 constitutes a flow path for air to flow from the top to the bottom. The fan 50 and the second heater 32 are arranged in the second space 25. The second heater 32 is arranged near the blow-out port 21 of the second space 25. Specifically, the second heater 32 is arranged at the lower part of the second space 25. The second heater 32 is arranged at a height position substantially the same as the blow-out port 21. In this way, the second heater 32 is arranged at a position closer to the downstream end, i.e., the blow-out port 21, than the upstream end of the air flowing in the second space 25.

[0068] (9) Control unit

[0069] like Figure 3 As shown, the heating device 10 includes a control unit C. The control unit C controls the fan motor 52, the first heater 31, and the second heater 32. Specifically, the control unit C controls the on / off of the fan motor 52 and the rotation speed of the fan motor 52. The control unit C controls the on / off of the first heater 31 and the output of the first heater 31. The control unit C controls the on / off of the second heater 32 and the output of the second heater 32.

[0070] (10) Operation

[0071] The operation of the heating device 10 of this embodiment includes three operation modes: a first operation mode, a second operation mode, and a third operation mode. Each operation mode is selected according to the operation of the user. The heating device 10 performs various operations according to the selected operation mode. Each operation mode is described below.

[0072] (10-1) First Operation Mode

[0073] When the first operation mode is selected, the heating device 10 radiates radiant heat forward and blows out warm air from the air outlet 21. In the first operation mode, the first heater 31 and the fan 50 operate.

[0074] When the first heater 31 is powered on, heat rays are emitted from the first heater 31. A portion of the heat rays emitted from the first heater 31 directly advances forward. The remaining portion of the heat rays emitted from the first heater 31 is reflected by the reflector 42 and then indirectly advances forward. The heat rays advancing forward sequentially pass through the rear suction component 61 and the front suction component 60. Heat rays are emitted from the front suction component toward the indoor space S. In this way, radiant heat is emitted toward the front side of the housing 11. The rear suction component 61 and the front suction component 60 absorb heat from the first heater 31.

[0075] When the fan 50 is operated, indoor air in the indoor space S is sucked into the suction port 20 . The air is heated in the first space 23 by the first heater 31 and the front and rear suction members 60 and 61 that have absorbed heat from the first heater 31 , and then flows upward toward the communication path 24 .

[0076] The air flowing into the second space 25 through the communication passage 24 is further heated by the reflector 42 that absorbs heat from the first heater 31 while flowing downward. The heated air flows toward the outlet 21 after passing through the fan 50 located at the lower part of the second space 25. The warm air is blown out toward the indoor space S from the outlet 21.

[0077] By blowing warm air from the blow-out port 21, the indoor space S can be heated not only by the radiant heat from the front suction member 60 but also by the warm air from the blow-out port 21. The blow-out port 21 is located at the lower part of the housing 11. Specifically, the blow-out port 21 is located along the ground F. Therefore, warm air can be blown to the feet of the user, which can improve the comfort of the user.

[0078] (10-2) Second Operation Mode

[0079] When the second operation mode is selected, the heating device 10 radiates radiant heat forward and blows out warm air from the air outlet 21. In the second operation mode, the first heater 31, the second heater 32, and the fan 50 operate.

[0080] When the first heater 31 is powered on, heat rays are emitted from the first heater 31. A portion of the heat rays emitted from the first heater 31 directly advances forward. The remaining portion of the heat rays emitted from the first heater 31 is reflected by the reflective plate 42 and then indirectly advances forward. The heat rays advancing forward sequentially pass through the rear suction component 61 and the front suction component 60. Heat rays are emitted from the front suction component 60 toward the indoor space S. In this way, radiant heat is emitted toward the front side of the housing 11. The rear suction component 61 and the front suction component 60 absorb heat from the first heater 31.

[0081] When the fan 50 is running, indoor air in the indoor space S is sucked into the suction port 20 . The air is heated in the first space 23 by the first heater 31 and the front and rear suction members 60 and 61 that absorb heat from the first heater 31 , and then flows into the second space 25 through the communication path 24 .

[0082] When the second heater 32 is powered on, the heater body 34 generates heat. The air in the second space 25 flows downward while being heated by the reflector 42 that has absorbed heat from the first heater 31. The air that has passed through the lower end of the rear surface of the reflector 42 passes through the second heater 32, thereby being further heated. The air heated by the second heater 32 flows toward the blow-out port 21 after passing through the fan 50. The warm air is blown out from the blow-out port 21 toward the indoor space S.

[0083] Thus, in the second operation mode, the air in the air passage P is heated by the first heater 31, the reflector 42, and the second heater 32, and then blown out from the blow-out port 21 as warm air. Therefore, in the second operation mode, the temperature of the warm air blown out from the blow-out port 21 can be increased compared to the first operation mode. For example, in the first operation mode, when the user feels that the temperature of the warm air is low, the temperature of the warm air can be increased by switching to the second operation mode. In this way, the temperature of the warm air can be adjusted, and the comfort of the user can be improved.

[0084] (10-3) Third Operation Mode

[0085] When the third operation mode is selected, the heating device 10 blows out warm air from the air outlet 21. In the third operation mode, the second heater 32 and the fan 50 operate.

[0086] When the fan 50 is running, the indoor air of the indoor space S is sucked into the suction port 20. The air flows into the second space 25 via the first space 23 and the communication path 24. Since the first heater 31 is not powered, the air in the air path P is not heated in the first space 23.

[0087] When the second heater 32 is powered on, the heater body 34 generates heat. The air flowing downward in the second space 25 is heated by the second heater 32 after passing through the rear surface of the reflector 42. The air heated by the second heater 32 flows toward the blow-out port 21 after passing through the fan 50. Warm air is blown forward from the blow-out port 21. In this way, only warm air can be blown in the third operation mode. Warm air can be blown only to the user's feet.

[0088] (11) Heating suppression operation

[0089] The heating device 10 of this embodiment performs a heating suppression operation based on the temperature distribution of the front suction member 60, and the heating suppression operation suppresses the first heater 31 heated by the front suction member 60 from being overheated. In this embodiment, the heating suppression operation is pre-programmed into the control unit C. Therefore, the heating device 10 of this embodiment performs the heating suppression operation according to the pre-input program. In the heating suppression operation, the control unit C adjusts the air volume of the fan 50 and the output of the first heater 31. Figure 4 , an example of heating suppression operation is described.

[0090] In step S1 , the control unit C executes the first operation mode in accordance with the user's selection. Specifically, the fan 50 is operated and the first heater 31 is energized.

[0091] In step S2, the control unit C determines whether the first heater 31 is in the energized state and a predetermined time has passed. If it is determined that the predetermined time has not passed ("No" in step S2), the control unit C determines that the temperature of the front suction member 60 is lower than the predetermined value, and executes step S3. If it is determined that the predetermined time has passed ("Yes" in step S2), the control unit C determines that the temperature of the front suction member 60 is higher than the predetermined value, and executes step S4.

[0092] In step S3, the control unit C adjusts the output of the first heater 31. Specifically, the control unit C performs a first adjustment to reduce the relative outputs of the three first heaters 31. In the first adjustment, for example, the relative output is reduced so that the output of the first heater 31 with the largest output among the three first heaters 31 is consistent with the outputs of the other first heaters 31. After executing step S3, step S2 is executed again.

[0093] In step S4 , the control unit C increases the air volume of the fan 50 .

[0094] In step S5, the control unit C adjusts the output of the first heater 31. Specifically, the control unit C performs the second adjustment to increase the relative output of the three first heaters 31. In the second adjustment, the output of the first heater 31 located above the first space 23 is made higher than the output of the first heater 31 located below the first space 23. In the heating device 10 of this example, since the air sucked in from the suction port 20 flows through the communication path 24 at the upper end of the first space 23, the amount of air passing through the first heater 31 located above is greater than the amount of air passing through the first heater 31 located below. By increasing the air volume of the fan 50, the amount of heat taken away from the first heater 31 located above the first space 23 increases, so even if the output of the first heater 31 located above the first space 23 is not reduced, it is possible to suppress the front side suction component 60 from being overheated. On the other hand, in the first heater 31 located below the first space 23, by suppressing the output of the first heater 31, it is possible to suppress the front side suction component 60 from being overheated. By adjusting the air volume of the fan 50 and the output of the first heater 31 in this manner, it is possible to suppress the front suction member 60 from being excessively heated, thereby ensuring the safety of the user.

[0095] (12) Features

[0096] (12-1)

[0097] The heating device 10 of this embodiment includes a first heater 31, an air passage P, and a second heater 32. The first heater 31 is arranged in the internal space I of the housing 11 to provide radiant heat. The air passage P is arranged in the internal space I to communicate the suction port 20 with the blow-out port 21. The second heater 32 is arranged in the air passage P to heat the air flowing in the air passage P. The air in the air passage P heated by the first heater 31 can be further heated by the second heater 32. Therefore, the temperature of the blown air blown out from the blow-out port 21 can be controlled. As a result, the heating effect of the heating device 10 can be improved, and the comfort of the user can be improved.

[0098] (12-2)

[0099] In the heating device 10 of the present embodiment, the fan 50 is disposed at a position downstream of the second heater 32 in the air flow in the air passage P. For example, even if the user puts his hand into the air outlet 21, the fan 50 is located downstream of the second heater 32 in the air flow, and thus the hand does not directly touch the second heater 32. Therefore, the safety of the user can be ensured.

[0100] (12-3)

[0101] In the heating device 10 of this embodiment, the air outlet 21 is arranged at the lower part of the housing 11, and the fan 50 is arranged at the lower part of the internal space I. In this way, warm air can be blown to the feet of the user. In addition, since the thermal influence of the first heater 31 is concentrated on the upper part of the internal space I, the influence of heat on the fan 50 can be reduced by arranging the fan 50 at the lower part. As a result, it is possible to suppress the adverse conditions caused by the heat load applied to the fan 50.

[0102] (12-4)

[0103] The heating device 10 of the present embodiment includes a front suction member 60 (first panel) formed with a hole H, and the heat rays emitted from the first heater 31 to the front surface 12 pass through the front suction member 60 (first panel). The front suction member 60 is arranged at the suction port 20. In this way, the front suction member 60 is used for both sucking air into the indoor space S and emitting radiant heat to the indoor space S. In addition, since the suction port 20 is formed relatively wide on the front surface 12 of the housing 11, more air can be sucked in by providing the hole H on the entire surface of the front suction member 60.

[0104] (12-5)

[0105] The heating device 10 of the present embodiment includes a rear suction component 61 (second panel) through which the heat from the first heater 31 passes. The rear suction component 61 is arranged opposite to the front suction component 60 in such a manner that the heat from the first heater 31 passes through the rear suction component 61 and the front suction component 60 in sequence. Thus, the rear suction component 61 absorbs the heat released from the first heater 31. As a result, the heat absorbed by the front suction component 60 arranged in front of the rear suction component 61 can be suppressed, and excessive heating of the front suction component 60 can be alleviated. Furthermore, the safety of the user can be ensured.

[0106] (12-6)

[0107] In the heating device 10 of the present embodiment, the air passage P has a first space 23 and a second space 25, which are arranged in order from the upstream to the downstream of the air flow. The first heater 31 is arranged in the first space 23, and the second heater 32 and the fan 50 are arranged in the second space 25. In this way, the air heated by the first heater 31 in the first space 23 moves to the second space 25 and is further heated by the second heater 32. The second heater 32 can make up for the insufficient heating of the air in the air passage P by the first heater 31. As a result, the temperature of the air blown out from the blow-out port 21 can be increased, so the comfort of the user can be improved.

[0108] (12-7)

[0109] The heating device 10 of this embodiment has an operation mode in which at least one of the first heater 31 and the second heater 32 is operated. The operation can be switched between a heating operation that emits radiant heat, a heating operation that uses warm air, or a heating operation of both. Thus, the heating device 10 can operate in accordance with the comfort level felt by the user.

[0110] (13) Modification

[0111] The above-mentioned embodiment may also adopt the following modified configurations. The following mainly describes the differences from the above-mentioned embodiment.

[0112] (13-1) First Modification

[0113] exist Figure 5 In the heating device 10 of the first modified example shown, an auxiliary communication passage 26 is provided at the lower part of the internal space I, and the air sucked in from the suction port 20 flows into the fan 50 without passing through the communication passage 24. The auxiliary communication passage 26 connects the first space 23 and the second space 25. Specifically, the auxiliary communication passage 26 is formed between the lower end of the reflection plate 42 and the support plate 39. The auxiliary communication passage 26 is formed so that the flow rate of air flowing in the auxiliary communication passage 26 is smaller than the flow rate of air flowing in the communication passage 24.

[0114] In the heating device 10 of this example, a part of the air sucked in from the air inlet 20 in the second operation mode is heated by the first heater 31 in the first space 23 and then flows into the second space 25 through the communication path 24. The remaining part of the air sucked in from the air inlet 20 flows from the first space 23 into the second space 25 through the auxiliary communication path 26. In the second space 25, the air passing through the communication path 24 and the air passing through the auxiliary communication path 26 merge and are heated by the second heater 32. In this way, since the auxiliary communication path 26 is arranged at a lower position than the first heater 31, the air flowing in the auxiliary communication path 26 flows into the second space 25 without being heated by the first heater 31 and the reflection plate 42 heated by the first heater 31.

[0115] (13-2) Second Modification

[0116] exist Figure 6In the heating device 10 of the second modified example shown, a heat-resistant glass 61 is provided as the second panel 61. The heat-resistant glass 61 is formed in a flat plate shape. The heat-resistant glass 61 is arranged behind the front suction member 60 and in front of the first heater 31. The heat-resistant glass 61 has the characteristics of transmitting far infrared rays radiated from the first heater 31 and the reflecting plate 42, and absorbing the heat radiated from the first heater 31 and the reflecting plate 42.

[0117] The heat-resistant glass 61 is arranged in the internal space I. The left and right ends of the heat-resistant glass 61 are fixed in the housing 11. The lower end of the heat-resistant glass 61 is fixed to the support plate 39. The heat-resistant glass 61 is opposite to the front suction member 60. Specifically, the entire area of ​​the heat-resistant glass 61 is arranged to overlap with the front suction member 60 in the front-to-back direction. A gap is formed between the upper end of the heat-resistant glass 61 and the upper surface 14.

[0118] In the second modified example, a first space 23 is formed between the front suction member 60 and the heat-resistant glass 61. The first space 23 is formed along the rear surface of the front suction member 60 and the front surface of the heat-resistant glass 61. The first space 23 constitutes a flow path for air to flow upward. A third space 27 for arranging the first heater 31 is formed between the heat-resistant glass 61 and the reflector 42. The third space 27 is substantially a space where air does not flow.

[0119] As in the above embodiment, in the second operation mode of the heating device 10, a portion of the heat rays of the first heater 31 advances forward, and the remaining portion advances forward after being reflected by the reflector 42. Almost all of the heat rays advancing forward pass through the heat-resistant glass 61, are directed toward the front suction member 60, and finally advance toward the front of the housing 11. A portion of the heat of the first heater 31 is absorbed by the heat-resistant glass 61.

[0120] The air sucked into the air inlet 20 from the indoor space S passes through the plurality of holes H of the front suction member 60 and flows upward in the first space 23. The air is heated by the heat-resistant glass 61. In other words, the heat-resistant glass 61 is cooled by the air in the first space 23.

[0121] The air that has passed through the communication path 24 flows downward in the second space 25. The air is heated by the reflector 42 that has absorbed heat from the first heater 31. The air further flows downward and is heated by the second heater 32. As described above, the air heated by the heat-resistant glass 61, the reflector 42, and the second heater 32 is blown out from the blow-out port 21 to the indoor space S by the fan 50.

[0122] According to the heating device 10 of the second modification, since the heat-resistant glass 61 absorbs the heat from the first heater 31, it is possible to suppress the front suction member 60 disposed in front of the heat-resistant glass 61 from being excessively heated. Thus, the safety of the user can be ensured.

[0123] (13-3) Third Modification

[0124] exist Figure 7 and Figure 8 In the heating device 10 of the third modified example shown, an air inlet 20, an air outlet 21, and a front opening 11a are formed on the front surface 12 of the shell 11. The air inlet 20 and the air outlet 21 are located at the lower part of the shell 11. The air outlet 21 is located at the lower end of the shell 11. Specifically, the air outlet 21 is located at the lower end of the shell 11. The air outlet 21 is located near the floor F of the indoor space S. The air outlet 21 extends from the right surface 16 of the shell 11 to the left surface 17 in the left-right direction. The air inlet 20 is located above the air outlet 21.

[0125] The front opening 11a is formed from the upper end of the housing 11 to the vicinity of the suction port 20. The front opening 11a is formed in a rectangular shape from the right surface 16 to the left surface 17 of the housing 11. Heat-resistant glass 60 is provided inside the front opening 11a.

[0126] The heat-resistant glass 60 is fixed to the housing 11 in such a manner as to seal the front opening 11a. The heat-resistant glass 60 is an example of the first panel 60 of the present disclosure. The heat-resistant glass 60 is formed in a flat plate shape. The heat-resistant glass 60 is arranged at the front opening 11a of the housing 11. The heat-resistant glass 60 is formed along the front surface 12 of the housing 11. Specifically, the heat-resistant glass 60 extends from the upper end of the housing 11 in the up-down direction to the suction port 20. The heat-resistant glass 60 extends from the left surface 17 of the housing 11 in the left-right direction to the right surface 16. The first space 23 of the air passage P of this example is formed between the heat-resistant glass 60 and the reflecting plate 42.

[0127] The heat-resistant glass 60 is made of a glass material having excellent heat resistance and has the characteristics of transmitting far infrared rays emitted from the first heater 31 and the reflective plate 42 and absorbing heat radiated from the first heater 31 and the reflective plate 42 .

[0128] Similar to the above embodiment, in the second operation mode of the heating device 10, a portion of the heat rays of the first heater 31 advances forward, and the remaining portion advances forward after being reflected by the reflective plate 42. Almost all of the heat rays that advance forward eventually advance toward the front of the housing 11. The heat of the first heater 31 is absorbed by the heat-resistant glass 61.

[0129] The air sucked into the air inlet 20 from the indoor space S flows upward in the first space 23. The air is heated by the first heaters 31 and the heat-resistant glass 60. In other words, the heat-resistant glass 60 is cooled by the air in the first space 23.

[0130] The air passing through the communication path 24 flows downward in the second space 25. The air is heated by the reflector 42 that absorbs heat from the first heater 31. The air heated by the reflector 42 flows further downward and is heated by the second heater 32. The air heated by the second heater 32 is blown out from the blow-out port 21 to the indoor space S by the fan 50.

[0131] (13-4) Fourth Modification

[0132] exist Fig. 9 In the heating device 10 of the fourth modified example shown, a front heat-resistant glass 60 and a rear heat-resistant glass 61 are provided. The front heat-resistant glass 60 is an example of the first panel 60 of the present disclosure. The rear heat-resistant glass 61 is an example of the second panel 61 of the present disclosure. The front heat-resistant glass 60 and the rear heat-resistant glass 61 are formed in a flat plate shape. The heat-resistant glass 60 is made of a glass material with excellent heat resistance. The heat-resistant glass 60 has the characteristics of transmitting far infrared rays radiated from the first heater 31 and the reflector 42, and the characteristics of absorbing heat radiated from the first heater 31 and the reflector 42.

[0133] Similar to the third variant, a suction port 20, a blow-out port 21, and a front opening 11a are formed on the front surface 12 of the housing 11 of the heating device 10 of the fourth variant. A front heat-resistant glass 60 is provided in the front opening 11a. A rear heat-resistant glass 61 is arranged in the first space 23. The left and right ends of the rear heat-resistant glass 61 are fixed to the support member 22. The lower end of the rear heat-resistant glass 61 is fixed to the support plate 39. The rear heat-resistant glass 61 is opposite to the front heat-resistant glass 60. Specifically, the entire area of ​​the rear heat-resistant glass 61 is arranged to overlap with the front heat-resistant glass 60 in the front-to-back direction.

[0134] In the fourth modification, a first space 23 is formed between the front heat-resistant glass 60 and the rear heat-resistant glass 61. The first space 23 is formed along the rear surface of the front heat-resistant glass 60 and the front surface of the rear heat-resistant glass 61. The first space 23 constitutes a flow path for air to flow upward.

[0135] In the fourth modification, a fourth space 28 is formed between the rear heat-resistant glass 61 and the reflector 42. The fourth space 28 is formed along the rear surface of the rear heat-resistant glass 61 and the front surface of the reflector 42. The fourth space 28 constitutes a flow path for air to flow downward.

[0136] The communication path 24 of the fourth modification is formed between the upper end of the rear heat-resistant glass 61 and the upper surface 14 of the housing 11. The communication path 24 allows the first space 23 and the fourth space 28 to communicate with each other.

[0137] In the fourth variation, the space between the reflector 42 and the rear surface 13 of the housing 11 does not constitute the air passage P. Specifically, in the heating device 10 of the fourth variation, an auxiliary reflector 41 is provided between the reflector 42 and the rear surface 13. The upper end of the auxiliary reflector 41 is fixed to the housing 11 via the first support plate 35. The lower end of the auxiliary reflector 41 is fixed to the housing 11 via the second support plate 36. Fig. 9 In the cross-sectional view at right angles to the paper direction (left-right direction), the auxiliary reflector 41 includes a substantially arc-shaped auxiliary reflector portion 41a. The auxiliary reflector portion 41a extends in the left-right direction and has substantially the same cross-sectional shape in the left-right direction. Specifically, the auxiliary reflector portion 41a is formed into a curved surface bulging backward. An auxiliary reflective surface R2 is formed on the front surface of the auxiliary reflector portion 41a, and the auxiliary reflective surface R2 reflects the heat line of the first heater 31 forward.

[0138] As in the above embodiment, in the second operation mode of the heating device 10, a portion of the heat rays from the first heater 31 travels forward, and the remaining portion travels forward after being reflected by the reflector 42 and the auxiliary reflector 41. Almost all of the heat rays traveling forward pass through the rear heat-resistant glass 61, are directed toward the front heat-resistant glass 60, and finally travel toward the front of the housing 11.

[0139] When the heat released from the first heater 31 passes through the rear heat-resistant glass 61, the heat is absorbed by the rear heat-resistant glass 61. Then, when the heat that has passed through the rear heat-resistant glass 61 passes through the front heat-resistant glass 60, the heat is absorbed by the front heat-resistant glass 60. In this way, by providing the rear heat-resistant glass 61 and the front heat-resistant glass 60 in front of the first heater 31, it is possible to suppress the temperature of the front side of the housing 11 from being excessively high.

[0140] The air sucked into the air inlet 20 from the indoor space S flows upward in the first space 23. When the air flows in the first space 23, the heat of the front heat-resistant glass 60 and the rear heat-resistant glass 61 is given to the air. As a result, the air in the first space 23 is heated. At the same time, since the front heat-resistant glass 60 and the rear heat-resistant glass 61 can be cooled by the air, the temperature of the front side of the housing 11 can be suppressed from being too high.

[0141] The air flowing into the fourth space 28 through the communication path 24 flows downward while being heated by the heat reflected by the first heaters 31 and the reflectors 41 and 42. The air in the fourth space 28 flows further downward, is further heated by the second heater 32, and is blown out from the blowout port 21 to the indoor space S by the fan 50.

[0142] (14) Fifth Modification

[0143] The control unit C of this example starts the operation of the second heater 32 when the heating device 10 starts to operate, and starts the operation of the first heater 31 after a predetermined time has passed since the start of the operation. Specifically, in the second operation mode, the control unit C first operates the fan 50 and the second heater 32, then reduces the output of the second heater 32 and increases the output of the first heater 31. In this way, in the second operation mode of this example, after the indoor space S is heated by warm air, it is gradually switched from warm air to radiant heat, and finally the indoor space S is heated mainly by radiant heat. Fig.10 and Fig.11 The flow of the second operation mode of this example will be described. It should be noted that the heating device 10 of this example is the heating device 10 of the above-mentioned embodiment.

[0144] First, the heating device 10 is powered on by a user's operation.

[0145] In step S11 , when the second operation mode is selected by the user's operation, the control unit C starts executing the second operation mode.

[0146] In step S12 , the control unit C sets a target value for the rotation speed of the fan 50 . As a result, the fan 50 is operated at a rotation speed that is the target value. The air in the indoor space S is sucked into the air inlet 20 by the rotation of the fan 50 .

[0147] In step S13 , the control unit C turns on the second heater 32 . As a result, the air flowing through the second space 25 is heated, and warm air is blown out from the blowout port 21 .

[0148] In step S14, the control unit C determines whether the first time has passed since the heating device 10 started operating (the execution of step S11 started). The first time is an arbitrarily set time. When it is determined that the first time has passed ("Yes" in step S14), step S15 is executed. When it is determined that the first time has not passed ("No" in step S14), step S14 is executed again.

[0149] In step S15, the control unit C changes the upper limit value of the output of the second heater 32. Here, the upper limit value of the output of the second heater 32 is lowered.

[0150] In step S16, the control unit C determines whether the output value of the second heater 32 is higher than the upper limit value. If it is determined that the output value of the second heater 32 is higher than the upper limit value ("Yes" in step S16), step S17 is executed. If it is determined that the output value of the second heater 32 is not higher than the upper limit value, that is, the output value of the second heater 32 is lower than the upper limit value ("No" in step S16), step S18 is executed.

[0151] In step S17, the control unit C reduces the output value of the second heater 32. Thus, the second heater 32 reduces the heating of the air in the air passage P.

[0152] In step S18, the control unit C turns on the first heater 31. Thus, the first heater 31 heats the air in the indoor space S using radiant heat.

[0153] In step S19, the control unit C sets a stable target value for the first heater 31. As a result, the output value of the first heater 31 increases to the stable target value. The stable target value for the first heater 31 is the output value of the first heater 31 during stable operation.

[0154] In step S20, the control unit C sets a stable target value for the fan 50. As a result, the rotation speed of the fan 50 is changed to the stable target value. The stable target value for the fan 50 is the rotation speed of the fan 50 during stable operation.

[0155] In step S21, the control unit C determines whether the second time has passed since the output of the first heater started to rise (step S19). If it is determined that the second time has passed ("Yes" in step S21), step S22 is executed. If it is determined that the second time has not passed ("No" in step S21), step S21 is executed again. The second time is an arbitrarily set time.

[0156] In step S22, the control unit C determines whether the room temperature is above the set temperature. If it is determined that the room temperature is above the set temperature ("Yes" in step S22), step S23 is executed. If it is determined that the room temperature is not above the set temperature, that is, the room temperature is lower than the set temperature ("No" in step S22), step S24 is executed. Here, the set temperature is a temperature set in advance in the control unit C in order to suppress excessive rise in the room temperature.

[0157] In step S23, the control unit C lowers the stable target value of the first heater 31. Thus, the output of the first heater 31 is reduced.

[0158] In step S24, the control unit C determines whether the output value of the first heater 31 is a stable target value. If it is determined that the output value of the first heater 31 is a stable target value ("Yes" in step S24), step S25 is executed. If it is determined that the output value of the first heater 31 is not a stable target value ("No" in step S24), step S26 is executed.

[0159] In step S25, the control unit C causes the heating device 10 to perform the steady operation. In the steady operation of this example, the first heater 31 and the second heater 32 are both turned on.

[0160] In step S26, the control unit C determines whether the output value of the first heater 31 is higher than the stable target value. If it is determined that the output value of the first heater 31 is higher than the stable target value ("Yes" in step S26), step S27 is executed. If it is determined that the output value of the first heater 31 is not higher than the stable target value, that is, the output value of the first heater 31 is lower than the stable target value ("No" in step S26), step S28 is executed.

[0161] In step S27, the control unit C reduces the output value of the first heater 31. Then, step S24 is executed again.

[0162] In step S28 , the control unit C reduces the output value of the second heater 32 .

[0163] In step S29, the control unit C increases the output value of the first heater 31. Then, step S21 is executed again.

[0164] (15) Other Implementation Methods

[0165] The above-mentioned embodiment and each modified example may also adopt the following structure.

[0166] The first panel 60 may not necessarily be located on the front surface 12 of the housing 11. For example, the first panel 60 may be disposed at a position behind the front surface 12 of the housing 11.

[0167] In a modified example, a heat-resistant film may be used instead of the heat-resistant glass.

[0168] The heating device 10 may not be a floor-standing type, but may be a wall-mounted type.

[0169] The heating device 10 may operate in at least one of a first operation mode, a second operation mode, and a third operation mode.

[0170] The heating suppression operation may be performed in the first operation mode or in the second operation mode. The heating suppression operation may not be performed during execution of any of the operation modes.

[0171] The heating suppression operation may be performed based on the measurement result of the temperature distribution of the front suction member 60. In this case, for example, the control unit C performs control to reduce the output of the first heater 31 close to the portion of the front suction member 60 where the temperature is high.

[0172] In step S22 of the fifth modification, the control unit C may determine whether the room temperature is lower than the set temperature.

[0173] The heating device 10 may arrange the fan 50 at a position above the first heater 31 arranged at the uppermost side in the air passage P. In this case, the fan 50 is arranged on the upstream side of the second heater 32 in the air passage P. In this way, by arranging the fan 50 and the second heater 32 separately, the heat load on the fan 50 can be suppressed.

[0174] The above descriptions of the embodiments and variations are provided, but it should be understood that various changes can be made to the embodiments and details without departing from the subject matter and scope of the claims. In addition, the above embodiments and variations can be appropriately combined or replaced as long as they do not affect the functions of the objects disclosed herein. The terms "first", "second", etc. described above are only used to distinguish between statements containing the above terms, and are not intended to limit the number or order of the statements.

[0175] - Industrial Applicability -

[0176] In summary, the present disclosure is useful for a heating device.

[0177] - Explanation of symbols -

[0178] 10 Heating device

[0179] 11 Housing

[0180] 12 Front surface

[0181] 13 Rear surface

[0182] 20 suction port

[0183] 21 Blowing outlet

[0184] 23 First Space

[0185] 25 Second Space

[0186] 31 First Heater

[0187] 32 Second heater

[0188] 42 Reflector

[0189] 50 Fan

[0190] 60 front side suction part (first panel)

[0191] 61 Rear suction part (second panel)

[0192] C Control Unit

[0193] I. Internal Space

[0194] P Air passage

[0195] S Object space

Claims

1. A heating device, characterized in that: The heating device comprises a housing (11), a first heater (31), a reflecting plate (42), an air inlet (20), an air outlet (21), an air passage (P), a fan (50), a second heater (32) and a control unit (C). An internal space (I) is formed in the housing (11). The first heater (31) is arranged in the inner space (I) to provide radiant heat, The reflecting plate (42) is arranged in the internal space (I) to reflect the heat rays generated by the first heater (31) toward the front surface (12) of the housing (11). The suction port (20) is formed on the housing (11) and sucks air in the target space (S). The blow-out port (21) is formed on the housing (11) and blows out air into the target space (S). The air passage (P) is provided in the internal space (I) so that the suction port (20) communicates with the blowing port (21). The fan (50) is arranged in the air passage (P) and conveys air from the suction port (20) toward the blowing port (21). The second heater (32) is arranged in the air passage (P) to heat the air flowing in the air passage (P). The control unit (C) has an operation mode for operating only the first heater (31) of the first heater (31) and the second heater (32), an operation mode for operating only the second heater (32) of the first heater (31) and the second heater (32), and an operation mode for operating both the first heater (31) and the second heater (32).

2. The heating device according to claim 1, characterized in that: The fan (50) is arranged in the air passage (P) at a position downstream of the second heater (32) in the air flow.

3. The heating device according to claim 1 or 2, characterized in that: The blow-out port (21) is arranged at the lower part of the housing (11). The fan (50) is arranged at the lower part of the internal space (I).

4. The heating device according to claim 1 or 2, characterized in that: The heating device includes a first panel (60), the first panel (60) is formed with a hole (H), and the heat rays emitted from the first heater (31) to the front surface (12) pass through the first panel (60), The first panel (60) is disposed at the suction port (20).

5. The heating device according to claim 4, characterized in that: The heating device comprises a second panel (61), and the heat rays from the first heater (31) pass through the second panel (61). The second panel (61) is arranged opposite to the first panel (60) in such a way that heat rays from the first heater (31) pass through the second panel (61) and the first panel (60) in sequence.

6. The heating device according to claim 1 or 2, characterized in that: The reflecting plate (42) is arranged between the first heater (31) and the rear surface (13) of the housing (11), The air passage (P) has a first space (23) and a second space (25), wherein the first space (23) and the second space (25) are arranged in sequence from upstream to downstream of the air flow. The first space (23) is in communication with the suction port (20), and the first space (23) includes a space in front of the reflection plate (42). The second space (25) is communicated with the blow-out port (21), and the second space (25) includes a space behind the reflection plate (42). The first space (23) and the second space (25) are connected to each other above the reflecting plate (42). The first heater (31) is arranged in the first space (23), and the second heater (32) and the fan (50) are arranged in the second space (25).

7. The heating device according to claim 1 or 2, characterized in that: The control unit (C) starts the operation of the second heater (32) when the heating device starts operating, and starts the operation of the first heater (31) after a predetermined time has passed since the second heater (32) started operating.

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