Electric fan heater

Abstract

In the layout of an electric fan heater where the motor is located in front of the fan and the fan and motor are positioned inside the casing, this design prevents foreign objects from reaching the motor from the air intake. [Solution] The electric fan heater comprises a heater for heating air, a fan for sending air taken in from the outside to the heater, a motor for rotating the fan, and a housing that houses the heater, the fan, and the motor, and has a discharge port for discharging warm air containing the air heated by the heater. The fan and the motor are housed in the housing such that the motor is in front of the fan, and an intake port is provided in the rear upper wall that forms the upper surface of the rear of the housing for passing the air taken in by the fan.

Description

Technical Field

[0001] The present disclosure relates to an electric hot air blower that supplies hot air.

Background Art

[0002] As a technology for supplying hot air, the technology described in Patent Document 1 below is known. This Patent Document 1 discloses a hot air blower including an intake port disposed on the back surface of a main body case, an outlet disposed at the lower portion of a front panel of the main body case, and a blower and a heater unit housed in the main body case. The blower has a sirocco-type fan and a motor. The motor is located on the front side of the fan.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technology of Patent Document 1 above, there is a risk that foreign substances such as dust and moisture (water droplets) may reach the motor from an intake part such as an intake port.

[0005] In view of the above circumstances, the present disclosure has been made, and in the layout of an electric hot air blower in which a blower (fan and motor) is disposed in a housing because the motor is located on the front side of the fan, an object is to provide a technology capable of suppressing foreign substances from reaching the motor from an intake part.

Means for Solving the Problems

[0006] To solve the above problems, an electric fan heater according to one aspect of the present disclosure comprises a heater for heating air, a fan for sending air taken in from the outside to the heater, a motor for rotating the fan, and a housing that houses the heater, the fan, and the motor, and has a discharge port for discharging hot air including the air heated by the heater. The fan and the motor are housed in the housing such that the motor is in front of the fan, and an intake section is provided in the rear upper wall that forms the upper surface of the rear of the housing for passing air taken in by the fan. [Effects of the Invention]

[0007] According to this disclosure, in an electric fan heater layout where the fan and motor are arranged inside the housing, the motor is positioned in front of the fan, thus preventing foreign objects from reaching the motor from the intake. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view showing the configuration of an electric fan heater according to an embodiment of this disclosure. [Figure 2] This is a plan view showing the configuration of the electric fan heater described above. [Figure 3] This is a rear view showing the configuration of the electric fan heater described above. [Figure 4] This is a side view showing the configuration of the electric fan heater described above. [Figure 5] This is a cross-sectional view showing the internal structure of the electric fan heater described above. [Figure 6] This is an enlarged rear view showing the upper part of the electric fan heater shown above. [Figure 7] This is an enlarged cross-sectional view showing the internal structure of the upper part of the electric fan heater shown above. [Figure 8] This is an exploded perspective view showing the configuration of the electric fan heater described above. [Figure 9] This is an enlarged rear view showing the top configuration of the electric fan heater with the filter removed. [Modes for carrying out the invention]

[0009] (Knowledge forming the basis of this disclosure) In electric fan heaters where the motor is located in front of the fan, and the blower is positioned inside the casing, there is a need to prevent moisture (water droplets) from cleaning the electric fan heater, such as from a spilled cup on a table, or foreign matter such as dust on the floor, from reaching the motor, which is an electrical component, through the air intake. One way to satisfy this need is to place the air intake (air intake port) on the wall of the casing opposite the motor, that is, on the back of the casing (main case), as described in Patent Document 1 above.

[0010] However, according to the inventor's findings, when the intake is placed on the back of the housing, especially when the vertical dimensions of the intake are increased to secure the intake area, the lower end of the intake will be positioned relatively low on the back of the housing. When the height of the lower end of the intake is low, there is a higher possibility that foreign matter such as dust present near the floor will enter the main case from the intake and reach the motor.

[0011] Therefore, in order to prevent foreign matter such as dust from reaching the motor through the air intake, it is conceivable to place the air intake on the top surface of the housing. However, if, for example, the air intake is formed on the top surface of the front of the housing, the motor will be located directly below the air intake, making it easy for foreign matter such as moisture to reach the motor through the air intake.

[0012] The inventors of the present invention have come up with the present disclosure based on the finding that, in the layout of an electric fan heater in which the fan and motor are arranged inside the housing, it is effective to provide an intake section on the rear upper wall that constitutes the upper surface of the rear of the housing in order to prevent foreign matter from reaching the motor from the intake section, given that the motor is located in front of the fan.

[0013] (1) The electric warm air blower according to one aspect of the present disclosure includes a heater that warms air, a fan that sends out the air taken in from the outside to the heater, a motor that rotates the fan, and a housing that houses the heater, the fan, and the motor and has an air outlet that discharges warm air including the air warmed by the heater. The fan and the motor are housed in the housing such that the motor is located in front of the fan, and an intake portion through which the air taken in by the fan passes is provided on the rear upper wall that constitutes the upper surface of the rear portion of the housing.

[0014] In the layout where the motor is arranged in the housing in front of the fan, since the intake portion is provided on the rear upper wall of the housing, the position of the motor can be shifted forward with respect to the intake portion. Therefore, even if foreign matter enters the housing through the intake portion, the possibility that the foreign matter moving downward from the intake portion reaches the motor can be reduced. Thereby, it is possible to suppress the adverse effects on the motor, which are particularly a concern when the foreign matter is moisture, that is, the adverse effects of foreign matter such as moisture on the motor, which is an electrical component.

[0015] (2) In the electric warm air blower of (1) above, the rear upper wall may be inclined so that the height becomes lower toward the rear side.

[0016] In this aspect, the area of the intake portion can be increased, and the intake efficiency can be improved.

[0017] (3) In the electric warm air blower of (2) above, the intake portion may have a plurality of intake ports that penetrate the inclined rear upper wall in the front-rear direction.

[0018] In this aspect, since the intake ports penetrate the rear upper wall in the front-rear direction instead of the up-down direction, even if there is foreign matter that has fallen from above the housing toward the intake portion, the foreign matter can be received by the bottom wall of the intake port extending in the front-rear direction. Therefore, the possibility that the foreign matter passes through the intake port and enters the inside of the housing can be reduced.

[0019] (4) In any of the electric fan heaters described in (1) to (3) above, the electric fan heater further comprises a filter covering the rear upper wall, the intake section has a plurality of intake ports that penetrate the rear upper wall and are arranged adjacent to each other, and the filter may include a grid-like frame having ribs that overlap at least some of the intake ports, and a filter mesh attached to the frame.

[0020] In this embodiment, a filter having ribs that overlap with the air intake covers the rear upper wall, thus further reducing the possibility of foreign matter entering through the air intake.

[0021] (5) In any of the electric hot air heaters described in (1) to (4) above, the discharge port may be formed at a lower position on the front of the housing than the intake portion, and the fan may send the air taken in through the intake portion downward and forward toward the discharge port.

[0022] In this configuration, the air taken in from the intake can be efficiently sent to the discharge port by a fan.

[0023] The embodiments will be described in detail below with reference to the drawings. However, unnecessary details may be omitted. For example, detailed explanations of already well-known matters or redundant explanations of substantially identical configurations may be omitted. This is to avoid the following explanation becoming unnecessarily verbose and to facilitate understanding for those skilled in the art. The accompanying drawings and the following explanation are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter described in the claims.

[0024] <Electric fan heater> The embodiments of this disclosure will be described below with reference to the drawings. Figure 1 is a perspective view showing the configuration of an electric fan heater 100 according to an embodiment of this disclosure. Figure 2 is a plan view showing the configuration of the electric fan heater 100. Figure 3 is a rear view showing the configuration of the electric fan heater 100. Figure 4 is a side view showing the configuration of the electric fan heater 100.

[0025] As shown in Figures 1 to 4, the electric hot air fan 100 comprises a housing 30 having an outlet 38 which is the outlet for hot air, and a distribution unit 80 positioned within the housing 30 corresponding to the outlet 38. In addition to the distribution unit 80, the housing 30 houses various internal devices for generating hot air (such as a blower 51 and a heater 55, which will be described later). The directions front, rear, left, right, up, and down shown in each figure are based on the assumption that the electric hot air fan 100 is installed on the floor, and that the direction in which the outlet 38 faces is defined as front. The housing 30 integrally comprises a front housing 31 and a rear housing 32 located behind the front housing 31. The rear housing 32 corresponds to an example of the "rear part of the housing" in this disclosure. The internal space of the front housing 31 and the internal space of the rear housing 32 are in communication with each other.

[0026] As shown in Figures 1 to 4, the front housing 31 has a front upper wall 31a, a front wall 31b, a front left wall 31c, a front right wall 31d, and a front bottom wall 31e. The front wall 31b corresponds to an example of the "front surface" in this disclosure.

[0027] The front upper wall 31a has a rectangular shape that is elongated horizontally when viewed from above. An operation switch 312 is provided on the front upper wall 31a. The operation switch 312 is provided for switching the operating mode of the electric fan heater 100. For example, the operating modes include an "off mode" that turns off the power to the electric fan heater 100, a "strong mode" that relatively increases the temperature of the hot air, and a "weak mode" that relatively decreases the temperature of the hot air. The operation switch 312 is supported so as to be rotatable between three rotation angles corresponding to these three operating modes. By switching the rotation angle of the operation switch 312 between these three rotation angles, the user can switch the operating mode of the electric fan heater 100 between the off, strong, and weak modes described above.

[0028] The front wall 31b has a rectangular shape when viewed from the front. The discharge port 38 described above is formed at the lower part of the front wall 31b. The discharge port 38 is a rectangular opening that is elongated from left to right when viewed from the front. The discharge port 38 is an opening for discharging warm air.

[0029] The distribution unit 80 is positioned inside the front housing 31 at a location corresponding to the discharge port 38. As shown in Figure 5, which will be described later, the distribution unit 80 is positioned in the same location as the front wall 31b of the front housing 31 in the front-rear direction, more specifically, slightly behind and recessed from the front wall 31b. As a result, the distribution unit 80 divides the discharge port 38 into upper and lower slits. That is, the discharge port 38 has an upper slit 18 located above the distribution unit 80 and a lower slit 28 located below the distribution unit 80. The upper slit 18 is a rectangular opening that is elongated horizontally when viewed from the front. The lower slit 28 is a rectangular opening that is elongated horizontally when viewed from the front.

[0030] The front left wall 31c and the front right wall 31d have a rectangular shape that is elongated vertically when viewed from the side. The front bottom wall 31e has a rectangular shape that is elongated horizontally when viewed from below.

[0031] The rear housing 32 has a rear upper wall 32a, a rear left wall 32c, a rear right wall 32d, a rear bottom wall 32e, and a rear wall 32f. The rear upper wall 32a is an example of the "rear upper wall" in this disclosure.

[0032] The rear upper wall 32a constitutes the upper surface of the rear housing 32. The rear upper wall 32a has a trapezoidal shape in which the left-right dimension of the upper end is greater than the left-right dimension of the lower end (see Figure 3). The rear upper wall 32a is inclined so that its height decreases towards the rear (see Figure 4). Specifically, the rear upper wall 32a is positioned between the rear end of the front upper wall 31a and the upper end of the rear wall 32f. In addition, an intake section 33 for drawing air from the outside into the housing 30 is located on the rear upper wall 32a. The intake section 33 is formed at a higher position than the discharge port 38. In other words, the discharge port 38 is formed at a lower position than the intake section 33 on the front wall 31b.

[0033] The rear right wall 32d and the rear left wall 32c have an outer shape that includes a vertically elongated rectangular lower portion and a triangular upper portion positioned above the lower portion when viewed from the side (see Figure 4). The rear right wall 32d and the rear left wall 32c are formed such that the distance between them in the left-right direction becomes shorter towards the rear (see Figure 2). The rear bottom wall 32e has a horizontally elongated rectangular outer shape when viewed from below. The rear wall 32f has a rectangular outer shape when viewed from the rear.

[0034] Figure 5 is a cross-sectional view showing the internal structure of the electric fan heater 100. As shown in Figure 5, the electric fan heater 100 further includes an intake air passage 20, an air guide passage 40, a blower 51, and a heater 55 inside the housing 30.

[0035] <Air blower> The blower 51 includes a fan 511, a fan case 513, and a motor 515. The fan 511 is a centrifugal fan rotatable about a central axis extending in the front-rear direction. More specifically, the fan 511 is a sirocco fan. The fan case 513 is a spiral casing, for example, including a cylindrical wall, which houses the fan 511. The motor 515 is an electrical component that rotates the fan 511. The fan 511 and the motor 515 are integrated together.

[0036] Because the motor 515 is located in front of the fan 511, the blower 51 is housed in the housing 30. The motor 515 is positioned between the fan case 513 and the front wall 31b. In other words, the motor 515 is housed in the front housing 31. The position of the motor 515 is shifted forward relative to the intake section 33. In other words, the motor 515 is not located below the intake section 33.

[0037] An air intake opening is formed in the center of the front of the fan case 513. The fan case 513 is located behind the intake air passage 20, and the air intake opening and the intake air passage 20 are in communication. An air outlet is formed on the underside of the fan case 513 for expelling air.

[0038] <Intake air passage> The intake air passage 20 is an air passage through which air taken in by the fan 511 from the intake section 33 flows. The intake air passage 20 communicates with the intake section 33 (a plurality of intake ports 33a, which will be described later) and communicates with the outside space through the intake section 33. In the intake air passage 20, the motor 515 rotates the fan 511 at a predetermined rotational speed, drawing air from the outside space into the intake air passage 20 through the intake section 33. The air taken into the intake air passage 20 is then drawn into the fan case 513 from the inlet on the front of the fan case 513. The fan 511 then pushes the air inside the fan case 513 downwards at an airflow rate corresponding to its rotational speed.

[0039] <Air guide path> The air guide 40 has an upstream air guide 41, an intermediate air guide 42, and a downstream air guide 43. The aforementioned outlet of the fan case 513, the upstream air guide 41, the intermediate air guide 42, and the downstream air guide 43 are connected in this order in a sequence.

[0040] The upstream air guide 41 receives the air discharged from the blower 51. The upstream air guide 41 is positioned below the blower 51 and extends vertically. More specifically, the upstream air guide 41 is located below the fan case 513 and communicates with the outlet of the fan case 513.

[0041] The intermediate air duct 42 is located downstream of the upstream air duct 41 and communicates with the upstream air duct 41. In this embodiment, the intermediate air duct 42 is formed continuously below the upstream air duct 41. The intermediate air duct 42 is formed to bend forward from the upstream air duct 41 in order to change the direction of the air sent out from the blower 51 and guide it forward. Specifically, the intermediate air duct 42 is formed to bend in an arc shape forward from the upstream air duct 41 in order to change the airflow from the blower 51 downwards to a forward flow.

[0042] The downstream air duct 43 is located downstream of the intermediate air duct 42 and communicates with the intermediate air duct 42. In this embodiment, the downstream air duct 43 is formed continuously in front of the intermediate air duct 42. The downstream air duct 43 extends in the front-rear direction from the intermediate air duct 42 to the discharge port 38. A heater 55 is located in the downstream air duct 43. Air flowing from the intermediate air duct 42 into the downstream air duct 43 is heated by passing through the heater 55 and then flows towards the discharge port 38.

[0043] A distribution section 80 is positioned between the heater 55 and the discharge port 38 in the downstream air duct 43. As shown in Figure 5, the distribution section 80 has a roughly triangular cross-sectional shape. As a result, the rear surface of the distribution section 80 is an inclined surface 80a, where the upper end is located further forward than the lower end. The air heated by the heater 55 is divided into upper and lower flows as it passes through the distribution section 80 having such an inclined surface 80a. The divided air is then blown out towards the front of the housing 30 through the upper slit 18 and lower slit 28 of the discharge port 38. At this time, the inclined surface 80a plays a role in guiding the air that tends to concentrate in the lower part of the downstream air duct 43 due to the change in direction caused by the intermediate air duct 42 upwards. This makes it possible to blow out warm air evenly from the upper slit 18 and lower slit 28.

[0044] <Heater> The heater 55 heats the air flowing through the downstream air guide 43. Specifically, the heater 55 is a heating element configured to generate heat when an electric current is applied. The heater 55 is a long, flat plate-shaped heater that allows air to pass through and is configured to heat the air that has passed through it. The heater 55 is, for example, a ceramic heater.

[0045] The heater 55 is located upstream of the discharge port 38 in the downstream air duct 43. As a result, the air that passes through the heater 55 is sent to the discharge port 38 as warm air.

[0046] When the off mode is selected as the operating mode using the aforementioned operation switch 312, the heater 55 is controlled to be de-energized. When the low mode is selected, the heater 55 is controlled to heat at a low wattage (for example, about 770W). When the high mode is selected, the heater 55 is controlled to heat the air at a higher wattage than the low mode (for example, about 1200W).

[0047] <Control circuit section> The blower 51 and heater 55 described above are controlled by a control circuit unit (not shown). Specifically, the control circuit unit is an electrical component and includes a microcomputer having a processor and memory. The processor executes a program stored in memory to control the blower 51 and heater 55.

[0048] The control circuit is positioned in close proximity to the motor 515 of the blower 51. For example, the control circuit is housed in the front housing 31. The control circuit is positioned forward of the intake section 33. In other words, the control circuit is not located below the intake section 33.

[0049] <filter> Figure 6 is an enlarged rear view showing the upper structure of the electric fan heater 100. Figure 7 is an enlarged cross-sectional view showing the internal structure of the upper part of the electric fan heater 100. Figure 8 is an exploded perspective view showing the configuration of the electric fan heater 100. As shown in Figures 6 to 8, the electric fan heater 100 further includes a filter 60 that covers the rear upper wall 32a. The filter 60 includes a frame 61 and a filter mesh 70 attached to the frame 61. Note that the filter mesh 70 is omitted in Figure 6.

[0050] The frame 61 is located outside the rear upper wall 32a. The frame 61 is inclined such that its height decreases towards the rear. In detail, the frame 61 has a grid-like structure. Specifically, the frame 61 has an outer frame 62, a plurality of ribs 63, and a locking mechanism (not shown) attached to the upper central part of the outer frame 62. The frame 61 is detachably attached to the rear upper wall 32a by the locking mechanism. The shape of the outer frame 62 to which the locking mechanism is attached is a trapezoid, where the left-right dimension of the upper end is greater than the left-right dimension of the lower end, and is substantially the same as the shape of the outer diameter of the rear upper wall 32a.

[0051] Multiple ribs 63 are arranged within the outer frame 62. Each of the multiple ribs 63 has multiple transverse ribs 63a and multiple longitudinal ribs 63b. Each of the multiple longitudinal ribs 63b is a rectangular prism-shaped body that is inclined so that its height decreases towards the rear. The multiple longitudinal ribs 63b are arranged with a left-right spacing RX in the left-right direction. Each of the multiple transverse ribs 63a is a rectangular prism-shaped body that extends along the left-right direction. The multiple transverse ribs 63a are arranged with a vertical spacing RZ in the vertical direction. The vertical spacing RZ of the transverse ribs 63a is smaller than the left-right spacing RX of the longitudinal ribs 63b.

[0052] The filter mesh 70 is positioned between the rear upper wall 32a and the frame 61. The filter mesh 70 is inclined so that its height decreases towards the rear. The outer diameter of the filter mesh 70 is approximately the same as the outer diameter of the outer frame 62. The filter mesh 70 is configured to allow air to pass through while capturing dust in the air that passes through. The filter mesh 70 is also detachably positioned on the rear upper wall 32a together with the frame 61. This allows the user to replace a filter mesh 70 that has foreign matter such as dust attached with a filter mesh 70 that does not have foreign matter attached at a predetermined timing.

[0053] <Intake section> Figure 9 is an enlarged rear view showing the upper structure of the electric fan heater 100 with the filter 60 removed. As shown in Figures 6 to 9, the intake section 33 has a plurality of intake ports 33a that penetrate the rear upper wall 32a and are arranged adjacent to each other, and a locking mechanism engagement part (not shown) that is attached to the upper central part of the rear upper wall 32a and can engage with the locking mechanism of the filter 60. The filter 60 is detachably attached to the rear upper wall 32a by the locking mechanism and the locking mechanism engagement part.

[0054] The intake section 33 further has a plurality of partition plates 35. The plurality of partition plates 35 have a plurality of horizontal partition plates 35a and a plurality of vertical partition plates 35b. The plurality of intake ports 33a are partitioned by the plurality of partition plates 35. Specifically, each of the plurality of intake ports 33a is partitioned by one horizontal partition plate 35a that forms the upper wall of the intake port 33a, another horizontal partition plate 35a that forms the bottom wall of the intake port 33a, one vertical partition plate 35b that forms the left wall of the intake port 33a, and another vertical partition plate 35b that forms the right wall of the intake port 33a.

[0055] Each of the multiple vertical partition plates 35b is inclined so that its height decreases towards the rear, and is a plate-like body perpendicular to the left-right direction. The distance from the front end to the rear end of each vertical partition plate 35b is a predetermined distance SY. The multiple vertical partition plates 35b are arranged with a left-right spacing TX in the left-right direction. In this embodiment, the number of vertical partition plates 35b is greater than the number of vertical ribs 63b of the filter 60. Also, the left-right spacing TX of the vertical partition plates 35b is smaller than the left-right spacing RX of the vertical ribs 63b.

[0056] Furthermore, each of the multiple horizontal partition plates 35a extends along the left-right direction and is a plate-like body perpendicular to the up-down direction. The distance from the front end to the rear end of the horizontal partition plate 35a is a predetermined distance SY (Figure 7). The multiple horizontal partition plates 35a are arranged with a vertical spacing TZ in the vertical direction. Also, in the front-rear direction, the position of the rear end of the horizontal partition plate 35a is located in front of the position of the front end of the horizontal partition plate 35a located one level below. In other words, the multiple air intake ports 33a penetrate the rear upper wall 32a in the front-rear direction, but do not penetrate the rear upper wall 32a in the vertical direction. In this embodiment, the number of horizontal partition plates 35a is less than the number of horizontal ribs 63a of the filter 60. The vertical spacing TZ of the horizontal partition plates 35a is greater than the vertical spacing RZ of the horizontal ribs 63a. As a result, at least some of the transverse ribs 63a overlap with the air intake 33a when viewed from the rear. Also, the vertical spacing TZ of the transverse partition plates 35a is smaller than the horizontal spacing TX of the vertical partition plates 35b.

[0057] <Effects and Effects> As explained above, in the electric hot air fan 100 of this embodiment, the motor 515 is located in front of the fan 511. In the layout of the electric hot air fan 100 in which the blower 51 is arranged inside the housing 30, an intake section 33 is provided on the rear upper wall 32a of the housing 30. This allows the position of the motor 515 to be shifted forward relative to the intake section 33. Therefore, even if foreign matter enters the housing 30 through the intake section 33, the possibility of the foreign matter moving downward from the intake section 33 reaching the motor 515 can be reduced. This makes it possible to suppress adverse effects on the motor 515, which are a concern, especially if the foreign matter is moisture, that is, adverse effects that foreign matter such as moisture can have on the motor 515, which is an electrical component.

[0058] In particular, when replacing a filter mesh 70 with dust or other foreign matter attached to it with a filter mesh 70 that does not have dust or other foreign matter attached to it, wiping the rear upper wall 32a of the electric fan heater 100 with a cloth while the filter 60 is removed can reduce the possibility of water droplets reaching the motor 515 from the intake section 33.

[0059] Furthermore, in this embodiment, the rear upper wall 32a is inclined such that its height decreases towards the rear. Compared to the case where the rear upper wall 32a is not inclined, the area of ​​the intake section 33 (the total area of ​​the multiple intake ports 33a) can be increased, thereby improving the intake efficiency of the blower 51. For this reason, even if the dimensions (thickness) of the housing 30 in the front-to-back direction are reduced in order to miniaturize the electric fan heater 100, a relatively large area of ​​the intake section 33 can be secured. In other words, according to this embodiment, it is possible to achieve both miniaturization of the electric fan heater 100 and improvement of intake efficiency.

[0060] Furthermore, in this embodiment, since the air intake port 33a penetrates the rear upper wall 32a in the front-to-back direction rather than the up-and-down direction, even if foreign matter falls from above the housing 30 toward the air intake 33, the foreign matter can be caught by the bottom wall (lateral partition plate 35a) of the air intake port 33a which extends in the front-to-back direction. This reduces the possibility of foreign matter passing through the air intake port 33a and entering the interior of the housing 30. In addition, when replacing a filter mesh 70 to which dust or other foreign matter is attached with a filter mesh 70 that does not have dust or other foreign matter attached, the user can remove the foreign matter that has been caught by the bottom wall (lateral partition plate 35a) of the air intake port 33a immediately after it is caught by the bottom wall (lateral partition plate 35a), thereby further reducing the possibility of foreign matter passing through the air intake port 33a and entering the interior of the housing 30.

[0061] Furthermore, in this embodiment, since the filter 60, which has ribs 63 that overlap with the air intake port 33a, covers the rear upper wall 32a, the possibility of foreign matter entering through the air intake port 33a can be further reduced.

[0062] Furthermore, in this embodiment, since the discharge port 38 is formed at the lower part of the front wall 31b, which is lower in height than the intake port 33 formed on the rear upper wall 32a, the air taken in from the intake port 33 into the housing 30 is sent downward by the fan 511, thereby efficiently sending the air taken in from the intake port 33 to the discharge port 38.

[0063] <Variation> Preferred embodiments of the present disclosure have been described above, but the disclosure is not limited thereto, and for example, the following modifications can be adopted.

[0064] (1) In one embodiment of the electric hot air fan 100, the shape of the air intake port 33a is rectangular when viewed from the rear, but the shape of the air intake port 33a is not limited to this, and for example the shape of the air intake port 33a may be circular or polygonal.

[0065] (2) In one embodiment of the electric fan heater 100, the housing 30 has a front housing 31 and a rear housing 32 as a single unit, but the housing 30 is not limited to this, and for example the housing 30 may not be divided into a front housing 31 and a rear housing 32. In this case, an air intake 33 is provided on the rear upper wall that constitutes the upper surface of the rear of the housing.

[0066] (3) In one embodiment of the electric fan heater 100, the multiple horizontal partition plates 35a were plate-like bodies that extended along the left-right direction and were perpendicular to the up-down direction. However, the multiple horizontal partition plates 35a are not limited to this, and for example, the multiple horizontal partition plates 35a may be inclined such that their height decreases towards the rear.

[0067] (4) The electric hot air fan 100 of one embodiment may be equipped with an electrostatic atomizer. [Industrial applicability]

[0068] This disclosure is useful for electric hot air heaters that supply hot air. [Explanation of Symbols]

[0069] 30 cabinets 31b Front wall (front) 32a Posterior upper wall (rear upper wall) 33 Intake section 33a Intake 38 Discharge port 55 Heater 60 filters 61 Frame 63 Ribs 70 filter mesh 100 Electric fan heaters 511 Fans 515 Motor

Claims

1. A heater to warm the air, A fan that sends air taken in from the outside to the heater, A motor that rotates the aforementioned fan, The system comprises a housing that houses the heater, the fan, and the motor, and has a discharge port for discharging warm air containing air heated by the heater, The fan and the motor are housed in the casing such that the motor is positioned in front of the fan. An electric fan heater, wherein an air intake section is provided on the rear upper wall that forms the upper surface of the rear of the housing, allowing air to pass through to be taken in by the fan.

2. In the electric fan heater according to claim 1, The aforementioned rear upper wall is sloped so that the height decreases towards the rear, in the electric fan heater.

3. In the electric fan heater according to claim 2, The aforementioned intake section has a plurality of intake ports that penetrate the inclined rear upper wall in the front-to-back direction, and is an electric fan heater.

4. In the electric fan heater according to claim 1, The aforementioned rear upper wall is further provided with a filter, The intake section has a plurality of intake ports that penetrate the rear upper wall and are arranged adjacent to each other. The electric fan heater includes a filter comprising a grid-like frame having ribs that overlap at least some of the air intake ports, and a filter mesh attached to the frame.

5. In the electric fan heater according to any one of claims 1 to 4, The discharge port is formed at a lower position than the intake portion on the front surface of the housing. The fan is an electric fan heater that takes in air through the intake and sends it downward and forward toward the discharge port.

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