JP2022145104A - heater - Google Patents

Abstract

To provide a heater capable of easily grasping a position.SOLUTION: On a lower plate 33 on which a housing 30 is placed, provided is light emitting means 120 facing a floor surface, and composed of a light emitting part 121, a light emitting substrate 122 on which the light emitting part 121 is installed, and a wire connection 123 connected to the light emitting substrate 122. Even when a user moves without turning on a room light at night, the position of the housing 30 can be easily confirmed visually by the lighting of the light emitting part 121. Therefore, the risk of the user colliding with a heater 1 can be reduced.SELECTED DRAWING: Figure 6

Description

This invention relates to a heater.

Conventionally, in this type of heater, there has been a heater in which a heat radiating portion for radiating heat from a heater is housed inside a housing, and the heat radiated from the heat radiating portion warms the air to be air-conditioned. (For example, Patent Document 1)

Japanese Patent Application Laid-Open No. 2021-4694

However, with this conventional device, when moving after going to bed at night with the heating turned on, the user cannot visually check the area around the feet of the housing. There is room for improvement due to the risk of collision.

In order to solve the above-mentioned problems, according to claim 1 of the present invention, a housing in which a heat radiating part for radiating heat from a heater is accommodated,
a lower plate positioned at the lower end of the housing and on which the housing is placed;
a leg connected to the horizontal end below the lower plate and placed on the floor;
It is characterized in that the lower plate is provided with light emitting means facing the floor surface.

Further, in claim 2, the light emitting means is housed in a housing portion formed in the lower plate,
A cover is provided below the light emitting means to cover the storage section.

Further, in claim 3, the light-emitting means is composed of a light-emitting portion, a light-emitting substrate on which the light-emitting portion is installed, and a wire connecting to the light-emitting substrate,
A hole through which air can flow is formed separately in at least a vertical direction in the storage portion.

Moreover, in Claim 4, the said hole was formed in the side surface of the said accommodating part, It was characterized by the above-mentioned.

According to this invention, since the lower plate is provided with the light-emitting means facing the floor surface, the vicinity of the lower portion of the housing can be visually confirmed even when the housing is moved without turning on the indoor lighting at night. , the risk of the user colliding with the housing can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view seen from the right front of the heater which shows one Embodiment of the heater which concerns on this invention. The perspective view which removed the front plate and right-and-left panel of a heater, and was seen from the right front. Cross-sectional view along the III-III line in Fig. 1 The functional block diagram of a heater. Perspective view explaining the lower plate, substrate, and cover of the heater Perspective view explaining the lower plate of the heater Bottom view explaining the lower plate of the heater Sectional view along line VIII-VIII in FIG.

An embodiment of a heater according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

In the following description, "front (front)", "rear (rear)", "top", "bottom", "right" and "left" follow the definitions in FIGS. The vertical direction corresponds to the vertical direction when the heater 1 is installed. The front-rear direction and the left-right direction correspond to the horizontal direction when the heater 1 is installed.

The heater 1 mainly includes a radiator 10 , a heater 20 , a housing 30 , a main control board 70 and a power supply board 80 .

The heat radiating section 10 has an upper heat radiating section 10a, a middle heat radiating section 10b, and a lower heat radiating section 10c. Upper stage heat radiation section 10a, middle stage heat radiation section 10b, and lower stage heat radiation section 10c (hereinafter simply referred to as "heat radiation section 10" when these are not distinguished) include upper stage heater 20a, middle stage heater 20b, and lower stage heater 20c (hereinafter, these are simply referred to as "heat radiation section 10"). , simply referred to as "heater 20"), and the heat of the heater 20 is dissipated from the outer surface. The heat radiating portion 10 is, for example, an aluminum alloy die-cast product. The heat radiating section 10 has a heater accommodating section 11 and a plurality of fins 12 . The heater housing portion 11 is formed between two plate-like members 13 having a surface direction along the front-rear direction, and houses the heater 20 . The fins 12 protrude substantially vertically from the plate-like member 13 in the left-right direction and extend in the up-down direction (having a surface direction along the up-down direction). The fins 12 are arranged, for example, at substantially equal intervals along the front-rear direction. The heat radiating section 10 is connected to fixtures 15 by bolts 14 on the left and right side surfaces. The heat radiating section 10 is fixed (installed) to the pair of heat shield plates 50 via the fixture 15 .

The heater 20 is, for example, a sheathed heater having terminals 21 at both ends. The heater 20 has a U-shape extending mainly in the front-rear direction. The heater 20 is accommodated in the heater accommodating portion 11 with the terminals 21 exposed from the heat radiating portion 10 . The heater 20 is integrally formed with the heat radiating section 10 by being cast inside the heat radiating section 10 .

The housing 30 accommodates the heat radiating section 10 and forms an outer shell of the heater 1 . The housing 30 has a front plate 31 , a rear plate 32 , a lower plate 33 , an upper cover 34 , left and right panels 35 , a heat shield plate 50 and a partition plate 60 . The front plate 31, the rear plate 32, the lower plate 33, the upper cover 34, and the left and right panels 35 are made of thin steel plates such as cold-rolled steel plates and hot-dip galvanized steel plates. The heat shield plate 50 and the partition plate 60 are made of, for example, thin steel plates.

The front plate 31 is arranged along the front surface of the heater 1 . The front panel 31 has a display section 37 , an operation section 38 and a front handle 39 . The display unit 37 is, for example, a liquid crystal display panel that displays the operating state and operation details of the heater 1 . The operation unit 38 receives instructions for turning on/off the power of the heater 1 and for operating details. The front handle 39 is arranged above the display section 37 and used by the user to move the heater 1 . The rear plate 32 is arranged along the rear surface of the heater 1 . The rear plate 32 has a rear handle (not shown) at a position paired with the front handle 39 in the front-rear direction.

The lower plate 33 is arranged along the lower surface of the heater 1 . The lower plate 33 is the base of the front plate 31 , the rear plate 32 , and the heat shield plate 50 , and the housing 30 is placed thereon. The lower plate 33 has a pair of caster-equipped legs 41 as legs used to move the heater 1 at lower positions in the front-rear direction. The legs 41 with casters are connected to the front-rear ends of the lower plate 33 which are both ends in the horizontal direction.

Further, the lower plate 33 is arranged across the heater chamber 30a and the substrate chamber 30b in the front-rear direction. The lower plate 33 located on the side of the heater chamber 30a has a grid-like heater chamber side suction port 40a for taking air into the heater chamber 30a. The lower plate 33 positioned on the substrate chamber 30b side has a substrate chamber side suction port 40b for taking in air into the substrate chamber 30b. That is, the substrate chamber side suction port 40b is a suction port provided vertically downward in the substrate chamber 30b.

The upper cover 34 is arranged along the upper surface of the heater 1 . The upper cover 34 has a grille 42 , a wire mesh 43 and panel fixtures 45 . The grill 42 has a heater-chamber-side air outlet 46a that blows out the air that is taken in from the heater-chamber-side inlet 40a or the substrate-chamber-side inlet 40b and that flows upward in the heater 1 from below. The wire mesh 43 is arranged below the grill 42 so as to block the heater chamber side outlet 46a. The panel fixture 45 is a frame member that is arranged below the wire netting 43 and spans between the pair of heat shield plates 50 in the front-rear direction. The panel fixture 45 has claw portions 45a, which are structures for fixing the left and right panels 35, on the left and right frame surfaces.

The left and right panels 35 are arranged along the left and right side surfaces of the heater 1, respectively. The left and right panels 35 cover and shield the heat radiating section 10 in order to ensure the safety of the user against high-temperature heat from the heat radiating section 10 . Thereby, the inside of the heater 1 is not visually recognized by the user.

The left and right panels 35 have inner folds (not shown) at their upper ends. The upper ends of the left and right panels 35 are fixed by hooking the claws 45 a of the panel fixture 45 on the folded back. The lower ends of the left and right panels 35 are fixed by being screwed to the lower plate 33 . Front and rear ends of the left and right panels 35 are engaged with the front plate 31 and the rear plate 32, respectively. The central portion 36a of the left and right panels 35 has a shape that bulges away from the heat radiating portion 10 with respect to the outer edge portion 36b. As a result, the left and right panels 35 are fixed in a non-contact manner with the heat shield plate 50 , and a certain gap is provided between them and the heat radiating section 10 . Therefore, the left and right panels 35 are prevented from excessive temperature rise.

The heat shield plate 50 shields the heat from the heat radiating portion 10 between the front plate 31 and the rear plate 32 and the heat radiating portion 10 . The heat shield plate 50 has a lower portion fixed to the lower plate 33 and an upper portion fixed to the panel fixture 45 positioned above the heat shield plate 50 . Thereby, the heat shield plate 50, the panel fixture 45, and the lower plate 33 constitute the internal framework of the heater 1 (heater chamber 30a).

The front heat shield plate 51, which is arranged in front and faces the front plate 31, separates electronic components such as the main control board 70, the power supply board 80, and the lead wires 87 from the heat dissipation part 10 in the front-rear direction (perpendicular to the vertical direction). horizontal direction) to separate the heat radiating section 10 and the electronic components. That is, the front heat shield plate 51 is configured such that the housing 30 has a heater chamber 30a that accommodates the heater 20, and a substrate chamber 30b that accommodates the power supply substrate 80, the thermostat 85, the lead wires 87, and the main control substrate 70. , partition the inside of the housing 30 . The front heat shield plate 51 has a substrate chamber side outlet 46b (air outlet) vertically upward. The substrate chamber side air outlet 46b discharges the air that rises in the substrate chamber 30b by natural convection to the heater chamber 30a side.

The partition plate 60 is arranged in the board chamber 30 b and divides the board chamber 30 b into a first space 90 containing the power supply board 80 and the lead wires 87 and a second space 91 containing the main control board 70 . The second space 91 is a space positioned forward of the partition plate 60 in the vertical range where the partition plate 60 is positioned. The first space 90 is a space other than the second space 91 in the substrate chamber 30b. As is clear from FIGS. 2 and 3, not all boundaries between the first space 90 and the second space 91 are clearly separated by the partition plate 60 .

The partition plate 60 has a base surface 61 , an inclined surface 62 and fixed pieces 63 . The base surface 61 is a flat plate having a surface direction along the vertical direction. The base surface 61 is arranged rearward of the main control board 70 and forward of the power supply board 80 and the lead wires 87, as shown in FIG. The upper end 61 a of the base surface 61 (the upper end of the partition plate 60 ) is positioned above the main control board 70 in consideration of heat dissipation from the power supply board 80 and noise from the lead wires 87 . It is preferable that no gap be provided between the left and right sides 61b of the base surface 61 and the heat shield plate 50 in terms of heat shielding and noise shielding properties.

The inclined surface 62 is a flat plate formed continuously with the lower end of the base surface 61 (base surface lower end 61c), and is inclined downward from the position of the base surface lower end 61c so as to approach the front plate 31 . A lower end of the inclined surface 62 (an inclined surface lower end 62 c ) has a gap 92 with respect to the front plate 31 . The lower end 62 c of the inclined surface is located below the main control board 70 . The fixing pieces 63 are intermittently provided on the left and right sides 61 b of the base surface 61 to fix the partition plate 60 to the left and right side surfaces 51 a of the front heat shield plate 51 .

At the lower end 62c of the inclined surface (the lower end of the partition plate 60), the partition plate 60 has a first flow path and a second flow path for the air sucked from the substrate chamber side air inlet 40b and directed to the substrate chamber side air outlet 46b. and branches to The first flow path is a flow path that passes through the first space 90 , that is, the rear of the partition plate 60 . The second flow path is a flow path that passes through the second space 91 , that is, the front side of the partition plate 60 .

The main control board 70 is a circuit board having a microcomputer that controls the heater 1 in an integrated manner. The main control board 70 receives a user's instruction via the operation unit 38 and controls power supply from the power supply board 80 to the heater 20 based on this instruction. The main control board 70 also controls the display section 37 to display necessary information. The main control board 70 is fixed to the back side of the display section 37 and the operation section 38 of the front plate 31 together with the display section 37 and the operation section 38 .

Main control board 70 is connected to room temperature thermistor 71 and plug thermistor 72 . The room temperature thermistor 71 is fixed to the leg with casters 41 and detects the temperature outside the heater 1 as room temperature. The main control board 70 controls the output of the heater 20 based on the room temperature obtained from the room temperature thermistor 71 . The plug thermistor 72 is a thermistor housed within the power plug 86 and detects the temperature of the power plug 86 . The main control board 70 turns off the heater 1 (stops power supply to the heater 20) when an abnormally high temperature is detected from the plug thermistor 72 so as to indicate that a tracking phenomenon or the like has occurred.

The power board 80 supplies power to each heater 20 under the control of the main control board 70 . The power supply board 80 mainly has a triac 81 and a heat sink 82 . The triac 81 controls power supply to the heater 20 on and off. The heat sink 82 radiates heat from the triac 81 .

Also, the power board 80 is connected to a thermostat 85 and a power plug 86 . Thermostat 85 is connected in series with power plug 86 via lead wire 87 and power supply board 80 . Thermostat 85 is arranged vertically above power supply board 80 and above main control board 70 and partition plate 60 . The thermostat 85 is fixed to the front heat shield plate 51, and turns off the heater 1 (cuts off the power supply to the heater 20) when the ambient temperature in the substrate chamber 30b becomes abnormally high.

The main control board 70 is arranged in the second space 91 between the power supply board 80 and the thermostat 85 . The power board 80 is arranged in the first space 90 below the main control board 70 . The lead wire 87 extends vertically through the first space 90 .

Next, referring to FIGS. 5 to 8, the structure of the bottom plate 33 near the center will be described in detail.

Reference numeral 100 denotes a storage portion which is formed substantially in the center of the lower plate 33 and has a hollow interior and an open lower surface 100a. When the heater 1 is installed on the floor surface, the storage unit 100 faces the floor surface with the lower surface 100a separated from the floor surface by a predetermined distance. The storage portion 100 has an upper hole 101 formed in a side surface in the front-rear direction, and lower holes 102 formed on the left and right sides of the upper hole 101 . The upper hole 101 and the lower hole 102 are separated vertically so that the upper hole 101 is above the lower hole 102 . The storage portion 100 has three locking holes 103 and screw holes 104 formed on its upper surface. A wire connection hole 105 through which a wire connection 123 (to be described later) passes is formed on the left side of the storage portion 100 . A substrate locking claw 106 for locking a light emitting substrate 122, which will be described later, is formed on the upper end face of the housing portion 100. As shown in FIG.

Reference numeral 110 denotes a cover having a translucent cover surface 110a which is installed so as to cover the lower surface 100a of the storage unit 100 and which has a substantially circular shape when viewed from above. The cover 110 has claws 111 formed at two locations on the side edges thereof, and projections 112 formed on the left and right sides of the claws 111 . The claw 111 and the projection 112 have elasticity.

When the user lifts the cover 110 upward along with the lower surface 100a of the storage unit 100, the claws 111 are fitted into the upper holes 101 and the projections 112 are fitted into the lower holes 102, so that the cover 110 is attached to the lower surface 100a. be worn. By fitting the claw 111 into the upper hole 101, the cover 110 can be prevented from coming off. By fitting the convex portion 112 into the pilot hole 102, it is possible to prevent the cover 110 from being displaced due to the rotation thereof in the horizontal direction.
In addition, the user can detach the cover 110 from the lower surface 100a by bending the claw 111 toward the center of the storage unit 100, extracting the claw 111 from the upper hole 101, and pulling downward.

A reference numeral 120 denotes a light emitting means housed in the housing portion 100 . The light-emitting means 120 includes a light-emitting portion 121 configured by an LED, a light-emitting substrate 122 configured by a microcomputer on which the light-emitting portion 121 is installed substantially in the center, and one end connected to the light-emitting substrate 122 and the other end connected to the main control substrate 70. and a wire 123 for connection.

The light emitting unit 121 switches between lighting and extinguishing of the light emitting unit 121 in response to the user's operation of a foot lighting switch (not shown) on the operation unit 38 . The lighting state of the light emitting unit 121 can be switched in a plurality of stages by the operation unit 38, and is adjusted to a predetermined illuminance in response to the operation of the operation unit 38. FIG.

The light-emitting substrate 122 has hooks formed at three locations (not shown) that are hooked in the locking holes 103, the ends of which are locked by the board-locking claws 106, and the screws 124 that are threaded through the screw holes 122a formed in the light-emitting substrate 122. By passing through and being screwed into the screw hole 104 , it is disposed substantially at the center of the upper end of the housing portion 100 . When the light-emitting substrate 122 is arranged in the storage section 100, the distance between the light-emitting section 121 and the floor surface is ensured, and the floor surface of the housing 30 can be evenly illuminated when the light-emitting section 121 is turned on. When the room in which the heater 1 is installed is turned off and the light emitting unit 121 is turned on, the user can easily grasp the position of the heater 1 .

The connection 123 is connected to the main control board 70 via the connection hole 105 of the storage section 100 . An instruction from the operation unit 38 and a current from the power supply board 80 are transmitted to the light emitting board 122 to cause the light emitting part 121 to emit light with a predetermined illuminance or turn off the light.

During normal operation, the heater 20 is energized to heat the vicinity of the heat radiating section 10 and generate an air flow from the bottom to the top of the housing 30 . At this time, part of the air that has passed through the heater chamber side suction port 40 a of the lower plate 33 passes through the gap between the lower hole 102 and the convex portion 112 and enters the storage portion 100 . The air that has entered the housing portion 100 passes through the gap between the hook 111 in the upper hole 101 and the wire connection hole 105 and escapes to the outside of the housing portion 100 . An air flow is generated in the storage section 100, and the room air passes through the vicinity of the light emitting substrate 122 to cool the light emitting substrate 122. As shown in FIG.

The lower heater 20c is positioned above the light-emitting substrate 122 installed in the storage unit 100. As shown in FIG. When the heater 20 is driven, the temperature of the light-emitting substrate 122 tends to rise due to the thermal influence of the heater 20 . The upper hole 101, the lower hole 102, and the connection hole 105 generate an air flow in the housing portion 100, thereby cooling the light emitting substrate 122 and preventing the temperature from rising. It is possible to prevent the temperature of the light emitting substrate 122 from rising and the functional components arranged on the light emitting substrate 122 from being thermally damaged.

An upper hole 101 , a lower hole 102 and a wire connection hole 105 are formed on the side surface of the housing portion 100 . The lower heater 20c is positioned above the storage unit 100 and is easily affected by heat. Since each hole is formed in the side surface of the storage part 100, the air flows without being affected by the lower heater 20c. The light emitting substrate 122 can be efficiently cooled.

In addition, since the housing portion 100 containing the light emitting means 120 is positioned substantially in the center of the heater chamber side suction port 40a of the lower plate 33, the heater 20 is driven to pass through the grid-shaped heater chamber side suction port 40a. As a result, bias in the draft due to natural convection rising in the housing 30 can be suppressed, and a uniform draft can be realized. The air rises uniformly from the heater-chamber-side outlet 46a, and the feeling of heating is not spoiled.

In addition, since the housing portion 100 housing the light emitting means 120 is positioned substantially in the center of the heater chamber side suction port 40a of the lower plate 33, the space between the light emitting portion 121 and the legs 41 with casters is equal in the front-rear direction. Become. When the light-emitting part 121 is turned on, the legs 41 with casters do not cast an unnatural shadow on the floor surface, so that natural indirect lighting can be achieved.

Next, effects of the present invention will be described.

A lower plate 33 on which the housing 30 of the heater 1 is placed is provided with a light emitting means 120 facing the floor surface. Even if the user moves at night without turning on the indoor lighting, the vicinity of the lower portion of the housing 30 can be visually confirmed. Therefore, the risk of the user colliding with the heater 1 can be reduced.

The light emitting means 120 is housed in a housing portion 100 formed in the lower plate 33 , and a cover 110 covering the housing portion 100 is installed below the light emitting means 120 . When the user looks at the heater 1, the light emitting means 120 cannot be visually recognized directly. The appearance of the heater 1 is improved.

The light-emitting means 120 is composed of a light-emitting portion 121, a light-emitting substrate 122 on which the light-emitting portion 121 is installed, and a wire connection 123 connected to the light-emitting substrate 122. The storage portion 100 has a hole through which air can flow. It was formed separately at least in the vertical direction. The housing portion 100 has a lower hole 102 into which the convex portion 112 of the cover 110 is fitted, an upper hole 101 into which the claw 111 of the cover 110 is fitted, and a wire connection hole 105 through which the wire 123 connected to the light emitting substrate 122 passes. formed. The upper hole 101 and the connection hole 105 are located above the lower hole 102 in the vertical direction. When the heater 20 is energized, the air is heated and an upward air flow is generated, and the air that has entered the housing portion 100 through the lower hole 102 escapes to the outside of the housing portion 100 through the upper hole 101 or the connection hole 105 . Air circulates in the housing portion 100 to cool the light emitting substrate 122 . Thermal damage to the functional components arranged on the light emitting substrate 122 can be prevented.

An upper hole 101 , a lower hole 102 and a wire connection hole 105 are formed on the side surface of the housing portion 100 . A heater 20 is present above the lower plate 33, and the temperature rises when the heater 20 is driven. The upper part of the storage part 100 is easily affected by the heat from the heater 20 . Since the upper hole 101, the lower hole 102, and the connection hole 105 are formed in the side surface of the storage portion 100, the influence of heat from the heater 20 is small. Room air entering the housing 100 through the lower hole 102 can be discharged out of the housing 100 through the upper hole 101 and the connection hole 105 without being affected by the heat of the heater 20 . The light emitting substrate 122 can be efficiently cooled.

In this embodiment, air is circulated through the upper hole 101, the lower hole 102, and the wiring hole 105 formed in the side surface of the storage unit 100, but through holes are formed in the cover 110 facing the floor surface. Air may be circulated between the through holes and the holes formed on the side surface of the storage section 100 . Air enters the storage section 100 through the through holes of the cover 110 and escapes through holes formed in the side surfaces of the storage section 100 . The light emitting substrate 122 can be efficiently cooled.

Further, in the present embodiment, the light-emitting substrate 122 is arranged at a substantially central position on the upper surface of the storage unit 100, but if the light emitted from the light-emitting unit 121 can illuminate the floor surface below the heater 1, However, it is not limited to this.

REFERENCE SIGNS LIST 1 heater 10 radiator 20 heater 30 housing 33 lower plate 41 leg with caster (leg)
100 Storage Part 101 Upper Hole 102 Lower Hole 105 Connection Hole 110 Cover 120 Light Emitting Means 121 Light Emitting Part 122 Light Emitting Substrate 123 Wire Connection

Claims (4)

a housing containing therein a heat radiating part for radiating heat from the heater;
a lower plate positioned at the lower end of the housing and on which the housing is placed;
a leg connected to the horizontal end below the lower plate and placed on the floor;
A heater, wherein the lower plate is provided with light-emitting means facing a floor surface. The light emitting means is housed in a housing portion formed in the lower plate,
2. The heater according to claim 1, wherein a cover is provided below said light emitting means to cover said storage portion. The light emitting means is composed of a light emitting part, a light emitting board on which the light emitting part is installed, and a wire connecting to the light emitting board,
3. The heater according to claim 2, wherein holes through which air can flow are formed separately in at least the vertical direction in the storage portion. 4. The heater according to claim 3, wherein the hole is formed in a side surface of the storage part.

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