Elevator electrical panels, elevators, and power conversion devices

Abstract

The present invention provides an elevator electrical panel, elevator, and power conversion device that can diverge the direction of air intake and exhaust. [Solution] The elevator electrical panel comprises a panel body located inside the hoistway or machine room, and a power conversion device located inside the panel body that supplies power to move the elevator car. The power conversion device comprises an electrical component that generates heat when energized, a base to which the electrical component is connected to the front, a heat sink fixed to the rear surface of the base and having a plurality of fins extending in a first direction, a blower fan that blows air in the first direction between the plurality of fins arranged in a second direction perpendicular to the first direction, and a duct that guides air between the plurality of fins and the blower fan. The rotation axis of the blower fan extends in a direction intersecting the first direction.

Description

Technical Field

[0001] This specification relates to an elevator switchboard, an elevator, and a power conversion device.

Background Art

[0002] Conventionally, for example, a power conversion device includes a heat sink having a plurality of fins to cool heat generated by electrical components (for example, Patent Document 1).

[0003] By the way, in the power conversion device according to Patent Document 1, a cooling fan having a vertical rotation axis is disposed below a plurality of fins extending in the vertical direction, air is supplied to the power conversion device from below, and exhausted upward from the power conversion device. That is, the air supply direction and the exhaust direction are the same (here, the vertical direction). Since it is necessary to flow air in the direction in which the fins extend, there is a restriction on the air flow direction, but there has been a desire to make the air supply direction and the exhaust direction different for a flexible design.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the problem is to provide an elevator switchboard, an elevator, and a power conversion device capable of making the air supply direction and the exhaust direction different from each other.

Means for Solving the Problems

[0006] The elevator switchboard includes a board main body disposed inside a hoistway or a machine room, and a power conversion device disposed inside the board main body and supplying power for running a car. The aforementioned power converter is Electrical components that generate heat when power is applied, A heat sink having a base to which the aforementioned electrical components are connected on the front, and a plurality of fins fixed to the rear surface of the base and extending in a first direction, A blower fan that directs air in the first direction between the plurality of fins arranged in a second direction perpendicular to the first direction, The device comprises a duct that guides the air between the plurality of fins and the blower fan, The rotation axis of the blower fan extends in a direction intersecting the first direction.

[0007] Also, the elevator, The above elevator electrical panel, The system includes a car that is powered by electricity supplied from the aforementioned elevator electrical panel.

[0008] Furthermore, the power converter is It is used in the elevator electrical panel mentioned above. [Brief explanation of the drawing]

[0009] [Figure 1] Schematic diagram of an elevator according to one embodiment [Figure 2] Plan view of an elevator according to the same embodiment [Figure 3] Overall view of the elevator electrical panel according to the same embodiment (a: front view, b: side view) [Figure 4] This is an overall view of the elevator electrical panel according to the same embodiment, showing the front view with the cover removed. [Figure 5] This is an overall view of the power converter according to the same embodiment, showing the device with the cover removed (a: side view, b: front view). [Figure 6] Front view showing disassembled components of the duct of the power converter according to the same embodiment. [Figure 7] Side view of the disassembled components of the duct of the power converter according to the same embodiment. [Modes for carrying out the invention]

[0010] In each drawing, the dimensions of components may be enlarged or reduced from their actual dimensions for the sake of clarity, and the dimensional ratios between drawings may not be consistent. Furthermore, in each drawing, some components may be omitted for the sake of clarity.

[0011] Terms including ordinal numbers such as "1st," "2nd," etc., are used to describe various components, but these terms are used solely for the purpose of distinguishing one component from others, and the components are not particularly limited by these terms. Furthermore, the number of components including ordinal numbers is not particularly limited; for example, there may be only one. Also, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0012] The following description will explain one embodiment of an elevator, elevator electrical panel, and power converter with reference to Figures 1 to 7. Note that the following embodiment is provided as an example to aid in understanding the configuration of the elevator, elevator electrical panel, and power converter, and does not limit the configuration of the elevator, elevator electrical panel, and power converter.

[0013] As shown in Figures 1 and 2, the elevator 1 may include, for example, a car 2 for people (passengers) to ride in, a car drive unit 3 for moving the car 2, a car rail 1a for guiding the car 2, and a processing unit 1b for controlling each part of the elevator 1. The processing unit 1b includes an elevator electrical panel (hereinafter also simply referred to as "electrical panel") 4 located inside the hoistway X1.

[0014] The drive method of the car drive unit 3 is not particularly limited. For example, as in this embodiment, the elevator 1 may be configured to include a counterweight 1c, a car rope 1d connected to the car 2 and the counterweight 1c, and a counterweight rail 1e that guides the counterweight 1c, while the car drive unit 3 may be configured to include a sheave 3a around which the car rope 1d is wound, and an electric motor 3b that rotates the sheave 3a.

[0015] That is, the car drive unit 3 may be a hoist, and the elevator 1 may be configured to have a rope drive system. Note that the configuration is not limited to this. For example, the car drive unit 3 may be a hydraulic device, and the elevator 1 may be configured to have a hydraulic drive system. Also, for example, the car drive unit 3 may be a linear motor, and the elevator 1 may be configured to have a linear motor drive system.

[0016] Also, the car drive unit 3 includes a detector 3c that detects the rotation of the sheave 3a. The detector 3c is, for example, an encoder. And the detector 3c outputs a pulse signal to the processing unit 1b every predetermined amount of rotation (for example, 1° to 5°). Note that the processing unit 1b calculates the moving distance and moving speed of the car 2 based on the pulse signal from the detector 3c.

[0017] Also, in the present embodiment, both ends of the car rope 1d are fixed to the upper or lower part of the hoistway X1, respectively, and the car rope 1d is wound around the sheave 2a of the car 2 and the sheave 1f of the counterweight 1c, so that the car rope 1d is connected to the car 2 and the counterweight 1c, respectively. However, the configuration is not limited to this. For example, a configuration in which the first end of the car rope 1d is connected to the car 2 and the second end of the car rope 1d is connected to the counterweight 1c may also be possible.

[0018] Also, the elevator 1 according to the present embodiment is configured to dispose the hoist, which is the car drive unit 3, inside the hoistway X1. However, the configuration is not limited to this. For example, a machine room may be provided above the hoistway X1, and the elevator 1 may be configured to dispose the hoist inside the machine room.

[0019] As shown in Figures 3 and 4, the electrical panel 4 comprises a box-shaped panel body 5 located inside the elevator shaft X1, and a power converter 10 that is detachably attached to the panel body 5 inside the panel body 5 and supplies power to drive the elevator car 2. The panel body 5 may be configured to be openable by removing the cover 5a, for example, as in this embodiment.

[0020] As shown in Figure 4, the control panel 5 has an opening that opens to the interior in the first lateral direction D1. The control panel 5 may be fixed to the elevator shaft X1 by being connected to the side wall X2 of the elevator shaft X1 or the rails 1a, 1e, for example, by brackets (not shown). Alternatively, the control panel 5 may be positioned between the elevator car 2 and the side wall X2 of the elevator shaft X1 in the first lateral direction D1 when viewed in the vertical direction D3, as in this embodiment. This ensures that when the elevator car 2 is in a predetermined position (for example, the landing on the top floor), the control panel 5 faces the elevator car 2 in the first lateral direction D1.

[0021] The electrical panel 4 may include electrical components 6a to 6g arranged inside the panel body 5. While not particularly limited, the electrical components may be, for example, control components that control the movement of the cage 2, or, for example, accessory components of the electrical panel 4 (e.g., a fan for supplying and exhausting air to the panel body 5, lighting for illuminating the inside of the panel body 5, etc.). The electrical components 6a and 6b may include, for example, electromagnetic contactors 6a and 6b, as in this embodiment. The electromagnetic contactors 6a and 6b have at least one pair of physically contacting electrical contacts, which are open to the outside air. Furthermore, the electromagnetic contactors 6a and 6b may be positioned above the power converter 10.

[0022] The electrical components 6c and 6d may, for example, include passive elements 6c and 6d, as in this embodiment. The electrical components 6e to 6g may, for example, include circuit boards 6e to 6g, as in this embodiment. Furthermore, the electrical panel 4 may include electrical components such as terminal blocks, capacitors, and automatic voltage regulators.

[0023] In this embodiment of elevator 1, the electrical panel 4 (panel body 5) is located inside the hoistway X1, but the configuration is not limited to this. For example, the electrical panel 4 (panel body 5) may be located inside the machine room.

[0024] The power conversion device 10 may be, for example, an inverter device, or for example, a converter device. The inverter device may be configured to change the travel speed of the car 2 by changing the frequency of the power supplied to the car drive unit 3 (hoisting device) for driving the car 2.

[0025] As shown in Figure 5, the power converter 10 may include electrical components 11a and 11b that generate heat when energized, a heat sink 12 for cooling the electrical components 11a and 11b, a blower fan 13 for blowing air onto the heat sink 12, a duct 14 positioned at least between the heat sink 12 and the blower fan 13, and a housing 15 that houses the electrical components 11a and 11b, the heat sink 12, the blower fan 13, and the duct 14.

[0026] In this specification, the directions D1 to D3 in the power converter 10 refer to the directions D1 to D3 when the power converter 10 is mounted on the panel body 5 and a person facing the power converter 10 is looking at the power converter 10. Therefore, the first lateral direction D1 is also called the front-back direction D1, and the second lateral direction D2 is the lateral direction D2 that is perpendicular to the first lateral direction D1 and is also called the left-right direction D2.

[0027] Furthermore, in the front-to-back direction D1, the arrow direction in each figure is the front direction (towards the viewer), and the direction opposite to the arrow direction in each figure is the rear direction. Similarly, in the left-to-right direction D2, the arrow direction in each figure is the left direction, and the direction opposite to the arrow direction in each figure is the right direction. And in the up-to-down direction D3, the arrow direction in each figure is the up direction, and the direction opposite to the arrow direction in each figure is the down direction. Of course, when the power converter 10 is removed from the panel body 5, the directions D1 to D3 may be different.

[0028] Furthermore, the power converter 10 may also include, for example, in addition to the electrical components 11a and 11b as in this embodiment, electrical components 11c and 11d that do not generate heat when energized, generate only a small amount of heat, or generate enough heat to be cooled by natural air cooling.

[0029] The electrical components 11a and 11b may, for example, comprise a semiconductor module 11a and a diode bridge (also called a bridge diode) 11b, as in this embodiment. The electrical components 11a and 11b may also comprise a rectifier circuit using thyristors. Furthermore, the electrical components 11c and 11d may, for example, comprise a terminal block 11c and an electrolytic capacitor 11d, as in this embodiment. The electrolytic capacitor 11d is cylindrical in shape, and its cylindrical axis is positioned along the vertical direction D3. The electrical components 11c and 11d may generate enough heat that cooling by, for example, a heat sink 12 or forced air cooling by a cooling fan 13 is not necessary.

[0030] As shown in Figure 5, the housing 15 may include first and second side portions 15a and 15b separated in the left-right direction D2, a rear portion 15c fixed to the rear ends of the first and second side portions 15a and 15b, respectively, and a cover surface portion 15d (see Figure 4) positioned in front of the rear portion 15c. As a result, the housing 15 is formed in a cylindrical shape (specifically, a rectangular cylindrical shape). For example, the cover surface portion 15d may be detachably attached to the front ends of the first and second side portions 15a and 15b by mounting means (e.g., bolts and nuts) not shown.

[0031] The heat sink 12 may have a base 12a and a plurality of fins 12b. For example, the base 12a may be formed in a plate shape along the vertical direction D3 and the left-right direction D2, and the plurality of fins 12b may be formed in a plate shape along the vertical direction D3 and the front-rear direction D1. Electrical components 11a and 11b are connected to the front of the base 12a, and the plurality of fins 12b are fixed to the rear surface of the base 12a. The fins 12b may be made of, for example, a metal with high thermal conductivity (aluminum). The plurality of fins 12b are arranged in the left-right direction D2 with a predetermined interval between them. As a result, air flows between the plurality of fins 12b in the vertical direction D3.

[0032] As shown in Figures 5 and 6, the heatsink 12 is fixed to the rear portion 15c of the housing 15 via a heatsink fixing bracket 121. The heatsink fixing bracket 121 may include a front plate 121a to which the front of the base 12a is fixed, and first and second side plates 121b, 121c extending rearward from both ends of the front plate 121a in the left-right direction D2, as shown in Figure 6. The front plate 121a has an opening 121d that exposes a part of the base 12a of the heatsink 12, and the electrical components 11a, 11b are connected to the base 12a exposed by the opening 121d. The rear ends of the first and second side plates 121b, 121c are connected to the rear portion 15c of the housing 15.

[0033] As shown in Figure 5, the blower fan 13 is positioned above the heatsink 12. Multiple blower fans 13 may be provided (two in this embodiment), as in this embodiment.

[0034] The rotation axis of the blower fan 13 may extend in the front-to-back direction D1. The blower fan 13 has a width in the vertical direction D3 and a width in the left-to-right direction D2 that is smaller than the width in the front-to-back direction D1. As a result, when the rotation axis of the blower fan 13 is in the front-to-back direction D1, it is easier to make the thickness of the power converter 10 in the front-to-back direction D1 thinner compared to when the rotation axis of the blower fan 13 is in the vertical direction D3.

[0035] Furthermore, the width of the blower fan 13 in the vertical direction D3 and the width in the horizontal direction D2 may be larger than the outer diameter of the electrolytic capacitor 11d. For example, the width of the blower fan 13 in the vertical direction D3 and the width in the horizontal direction D2 may be 101% to 188% of the outer diameter of the electrolytic capacitor 11d. This makes it easier to reduce the thickness of the power conversion device 10 in the horizontal direction D1 by making the rotation axis of the blower fan 13 in the horizontal direction D1.

[0036] The blower fan 13 generates cooling air by rotating, thereby removing heat from the heat sink 12. The blower fan 13 may also be an exhaust fan that discharges air to the outside of the power converter 10. That is, the blower fan 13 may be an exhaust fan positioned downstream (in this case, above) the multiple fins 12b. Air is drawn in from the lower end of the multiple fins 12b to the space between the multiple fins 12b and flows upward between the multiple fins 12b. This makes the airflow between the multiple fins 12b more likely to be laminar, and air flows more easily from the upstream end (in this case, the lower end) to the downstream end (in this case, the upper end) of the multiple fins 12b, thereby increasing the cooling effect of the heat sink 12.

[0037] Air flows upward between the multiple fins 12b, from the lower end to the upper end. At this time, since the multiple fins 12b are surrounded by the base 12a, the first and second side plates 121b and 121c of the heat sink fixing bracket 121, and the rear part 15c of the housing 15, the air flows reliably upward between the multiple fins 12b.

[0038] The air flows between the multiple fins 12b and is then discharged to the outside of the power converter 10 via the duct 14 from the upper ends of the multiple fins 12b. Although a portion of the upper ends of the multiple fins 12b on the left side does not face the duct 14, the air discharged from the upper ends of this portion of the fins 12b is guided to the duct 14 by the horizontal plate portion 133b of the side bracket 133, which will be described later.

[0039] The blower fan 13 is fixed to the rear portion 15c of the housing 15 via a fan fixing bracket 131. The fan fixing bracket 131 may include, as shown in Figures 6 and 7, a fan mounting plate 131a to which the blower fan 13 is attached, a top plate 131b extending rearward from the upper end of the fan mounting plate 131a, and an inclined plate 131c extending downward from the lower end of the fan mounting plate 131a. The rear end of the top plate 131b is fixed to the rear portion 15c of the housing 15. The lower end of the inclined plate 131c is connected to the front plate 121a of the heat sink fixing bracket 121.

[0040] The power converter 10 may include an inclined bracket 132 connected to the top plate 131b of the fan fixing bracket 131. The inclined bracket 132 extends downward from the top plate 131b at an angle. The lower end of the inclined bracket 132 is fixed to the rear part 15c of the housing 15. The inclined bracket 132 is positioned parallel to the inclined plate 131c of the fan fixing bracket 131. The width D2 of the inclined bracket 132 in the left-right direction is the same as the width D2 of the fan fixing bracket 131 in the left-right direction.

[0041] Furthermore, the power converter 10 may also include a side bracket 133 positioned at one end of the fan fixing bracket 131 and the inclined bracket 132 in the left-right direction D2. As shown in Figures 6 and 7, the side bracket 133 may include a vertical plate portion 133a that contacts one end of the fan fixing bracket 131 and the inclined bracket 132 in the left-right direction D2, and a horizontal plate portion 133b that extends to the left from the lower end of the vertical plate portion 133a. The horizontal plate portion 133b contacts the upper end of the heat sink fixing bracket 121. Also, the horizontal plate portion 133b faces some of the left-side fins 12b of the plurality of fins 12b.

[0042] The duct 14 guides air between the multiple fins 12b and the blower fan 13. The duct 14 may consist of a housing 15, a fan fixing bracket 131, an inclined bracket 132, and a side bracket 133. Specifically, the duct 14 may consist of the first side portion 15a and the rear portion 15c of the housing 15, the top plate 131b and inclined plate 131c of the fan fixing bracket 131, the inclined bracket 132, and the vertical plate portion 133a of the side bracket 133. Since the duct 14 has inclined portions (inclined plate 131c and inclined bracket 132) between the multiple fins 12b and the blower fan 13, the vertical flow D3 of the air passing between the multiple fins 12b can be appropriately changed to the exhaust direction (front-back direction D1) of the blower fan 13.

[0043] The air discharged from the power converter 10 by the blower fan 13 is expelled forward through an exhaust port 5b (see Figure 3) provided in the panel body 5 (cover 5a) of the electrical panel 4. The exhaust port 5b is formed in the panel body 5 so as to face the blower fan 13 in the front-rear direction D1.

[0044] [1] Based on the above, the elevator electrical panel 4 is as in this embodiment. A control panel body 5 located inside the elevator shaft X1 or machine room, The system includes a power conversion device 10 located inside the main body 5 that supplies power to drive the car 2, The power converter 10 is Electrical components 11a and 11b that generate heat when energized, A heat sink 12 having a base 12a to which the aforementioned electrical components 11a and 11b are connected to the front, and a plurality of fins 12b fixed to the rear surface of the base 12a and extending in a first direction (up and down direction in this embodiment) D3, A blower fan 13 directs air in the first direction (up and down direction in this embodiment) D3 between the plurality of fins 12b arranged in a second direction (left and right direction in this embodiment) D2 which is perpendicular to the first direction (up and down direction in this embodiment) D3, The system includes a duct 14 that guides the air between the plurality of fins 12b and the blower fan 13, The rotation axis of the blower fan 13 extends in a direction (in this embodiment, the front-to-back direction) D1 that intersects the first direction (in this embodiment, the up-and-down direction) D3, This configuration is preferable.

[0045] With this configuration, the direction of air intake (in this embodiment, the vertical direction D3) and the direction of exhaust (in this embodiment, the front-to-back direction D1) can be made different.

[0046] [2] Furthermore, in the elevator electrical panel 4 described in [1] above, as in this embodiment, The blower fan 13 is an exhaust fan positioned downstream of the plurality of fins 12b. This configuration is preferable.

[0047] With this configuration, the airflow between the multiple fins 12b tends to be laminar, and air flows easily from the upstream end to the downstream end of the multiple fins 12b, thereby increasing the cooling effect of the heat sink 12.

[0048] [3] Furthermore, in the elevator electrical panel 4 of [1] or [2] described above, as in this embodiment, The rotation axis of the blower fan 13 extends in a third direction (front-to-back direction in this embodiment) D1 which is perpendicular to the first direction (up and down direction in this embodiment) D3 and the second direction (left and right direction in this embodiment) D2. The panel body 5 is equipped with an exhaust port 5b on its front. This configuration is preferable.

[0049] With this configuration, the direction of air intake (in this embodiment, the vertical direction D3) and the direction of exhaust (in this embodiment, the front-to-back direction D1) can be made different. For example, when the elevator car 2 passes in front of the elevator electrical panel 4 (panel body 5), space is provided in front, so exhausting forward makes it less likely for the exhaust to adversely affect other equipment.

[0050] [4] Furthermore, in the elevator electrical panel 4 described in [3] above, as in this embodiment, The power converter 10 is positioned above the electromagnetic contactors 6a and 6b, each having at least one pair of physically contacting electrical contacts. This configuration is preferable.

[0051] With this configuration, since the exhaust is directed forward of the power converter 10, the exhaust is less likely to cause adverse effects such as dust and hot air on the electromagnetic contactors 6a and 6b.

[0052] [5] Furthermore, elevator 1, as in this embodiment, One of the elevator electrical panels 4 from [1] to [4] above, The system includes a car 2 that is powered by electricity supplied from the elevator electrical panel 4, This configuration is preferable.

[0053] With this configuration, the direction of air intake (in this embodiment, the vertical direction D3) and the direction of exhaust (in this embodiment, the front-to-back direction D1) can be made different.

[0054] [6] Furthermore, the power converter 10 is used in any one of the elevator electrical panels 4 described in [1] to [4] above. This configuration is preferable.

[0055] With this configuration, the direction of air intake (in this embodiment, the vertical direction D3) and the direction of exhaust (in this embodiment, the front-to-back direction D1) can be made different.

[0056] It should be noted that the power converter 10, elevator electrical panel 4, and elevator 1 are not limited to the configuration of the embodiment described above, nor are they limited to the effects described above. Furthermore, it goes without saying that the power converter 10, elevator electrical panel 4, and elevator 1 can be modified in various ways without departing from the spirit of the present invention. For example, one or more of the configurations and methods described below may be arbitrarily selected and adopted in the configurations and methods of the embodiment described above.

[0057] (A) In the elevator electrical panel 4 according to the above embodiment, the rotation axis of the blower fan 13 extends in the front-rear direction D1. However, the elevator electrical panel 4 is not limited to this configuration. For example, the rotation axis of the blower fan 13 may extend in the left-right direction D2. That is, the rotation axis of the blower fan 13 may be in a direction that intersects the up-down direction D3, and may extend in a direction that is inclined with respect to the left-right direction D2 and the front-rear direction D1.

[0058] (B) In the elevator electrical panel 4 according to the above embodiment, the blower fan 13 is an exhaust fan positioned downstream of the multiple fins 12b. However, the elevator electrical panel 4 is not limited to this configuration. For example, the blower fan 13 may be a supply fan positioned upstream of the multiple fins 12b.

[0059] (C) In the elevator electrical panel 4 according to the above embodiment, the configuration includes electromagnetic contactors 6a and 6b arranged above the power converter 10 and having at least one pair of physically contacting electrical contacts. However, the elevator electrical panel 4 is not limited to this configuration. The elevator electrical panel 4 may also be configured to include an electromagnetic switch (magnetic switch) arranged above the power converter 10. [Explanation of Symbols]

[0060] 1...Elevator, 1a...Cage rail, 1b...Processing unit, 1c...Counterweight, 1d...Cage rope, 1e...Weight rail, 1f...Sheave, 2...Cage, 2a...Sheave, ...Cage drive unit, 3a...Sheave, 3b...Electric motor, 3c...Detector, 4...Elevator electrical panel, 5...Panel body, 5a...Cover, 5b...Exhaust vent, 6a...Electromagnetic contactor (electrical component), 6b...Electromagnetic contactor (electrical component), 6c...Passive element (electrical component), 6d...Passive element (electrical component), 6e...Circuit board (electrical component), 6f...Circuit board (electrical component), 6g...Circuit board (electrical component), 10...Power converter, 11a...Semiconductor module (electrical component), 11b...Diode bridge (electrical component), 11c...Terminal block (electrical component), 1 1d...Electromagnetic capacitor (electrical component), 12...Heat sink, 12a...Base, 12b...Fin, 13...Blower fan, 14...Duct, 15...Housing, 15a...First side panel, 15b...Second side panel, 15c...Rear panel, 15d...Cover panel, 121...Heat sink fixing bracket, 121a...Front panel, 121b...First side panel, 121c...Second side panel, 121d...Opening, 131...Fan fixing bracket, 131a...Fan mounting plate, 131b...Top panel, 131c...Inclined panel, 132...Inclined bracket, 133...Side bracket, 133a...Vertical panel, 133b...Horizontal panel, D1...Front-to-back direction, D2...Left-to-right direction, D3...Up-and-down direction, X1...Elevator shaft, X2...Side wall

Claims

1. A control panel body located inside the elevator shaft or machine room, The panel body is equipped with a power conversion device that is located inside the panel and supplies power to move the cage, The aforementioned power converter is A housing comprising: first and second side portions separated in the left-right direction; a rear portion fixed to the rear ends of the first and second side portions, respectively; and a cover surface portion positioned in front of the rear portion and detachably attached to the front ends of the first and second side portions; Electrical components that generate heat when power is applied, A heat sink having a base to which the aforementioned electrical components are connected on the front, and a plurality of fins fixed to the rear surface of the base and extending in the vertical direction, A fan that blows air in the vertical direction between the multiple fins arranged in the left-right direction, The device comprises a duct that guides the air between the plurality of fins and the blower fan, The electrical components, the heat sink, the blower fan, and the duct are arranged inside the housing. The rotating shaft of the aforementioned blower fan extends in the front-to-back direction, and is located in the elevator electrical panel.

2. The elevator electrical panel according to claim 1, wherein the blower fan is an exhaust fan positioned downstream of the plurality of fins.

3. The rotating shaft of the aforementioned blower fan extends in the front-to-back direction. The elevator electrical panel according to claim 2, wherein the panel body is provided with an exhaust vent on the front.

4. The elevator electrical panel according to claim 3, comprising an electromagnetic contactor positioned above the power converter and having at least one pair of physically contacting electrical contacts.

5. An elevator electrical panel according to any one of claims 1 to 4, An elevator comprising a car that runs on electricity supplied from the aforementioned elevator electrical panel.

6. A power conversion device used in an elevator electrical panel according to any one of claims 1 to 4.

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