Electrical junction box

Abstract

An electrical junction box includes: a cooling member; and a pair of conductive members disposed to sandwich the cooling member. Each of the pair of conductive members includes a housing portion, an electronic component disposed inside the housing portion, and a busbar disposed on a mounting wall that is one box wall of the housing portion and electrically connected to the electronic component, and each of the pair of conductive members is provided such that an outer surface of the mounting wall faces an outer surface of the cooling member. The electronic component includes a plurality of terminals and a movable contact disposed inside the electronic component, and the electronic component is configured such that the movable contact is located further away from the side wall than the plurality of terminals in the electronic component.

Description

Technical Field

[0001] The present disclosure relates to an electric junction box including a cooling member capable of absorbing heat from an outer surface and radiating the heat to the outside, and a pair of conductive members disposed to sandwich the cooling member. Background Art

[0002] An electrical junction box to be mounted on a vehicle or the like has been proposed in the related art. For example, the electrical junction box in the related art is in a box shape as a whole, and includes a busbar connected to an external power source or the like, an electronic component (such as a relay or a fuse) connected to the busbar, and a housing accommodating the busbar and the electronic component (for example, see JP2022-047797A).

[0003] However, in the above-described type of electrical junction box, generally, when an electronic component (particularly a relay or a fuse) operates, Joule heat associated with energization is generated in an internal circuit, a bus bar, and the like of the electronic component.

[0004] From the viewpoint of properly operating electronic components for a long period of time, it is desirable to effectively dissipate such heat generated at various locations during power-on to the outside. Summary of the invention

[0005] An object of the present disclosure is to provide an electrical junction box having good heat dissipation.

[0006] In order to achieve the above-mentioned object, the electric junction box according to the present disclosure is characterized as follows.

[0007] According to one aspect of the present disclosure, an electrical junction box is provided, comprising: a cooling member capable of absorbing heat from an outer surface and dissipating the heat to the outside; and a pair of conductive members arranged to clamp the cooling member, wherein each of the pair of conductive members includes a shell portion having a box shape, an electronic component arranged inside the shell portion, and a bus bar arranged on a mounting wall which is a box wall of the shell portion and electrically connected to the electronic component, and each of the pair of conductive members is arranged so that the outer surface of the mounting wall faces the outer surface of the cooling member, and the electronic component includes a plurality of terminals arranged on the side wall of the electronic component and connected to the bus bar, and a movable contact which is arranged inside the electronic component and is capable of mechanically switching a conductive state and a non-conductive state between predetermined terminals among the plurality of terminals, and the electronic component is configured so that the movable contact is located at a position farther away from the side wall than the plurality of terminals in the electronic component.

[0008] According to the electrical junction box of the present disclosure, a pair of conductive members each includes an electronic component and a busbar, and are arranged in such a manner that the outer surface of the mounting wall of these conductive members faces the outer surface of the cooling member and sandwiches the cooling member in the middle. Therefore, the Joule heat generated in the internal circuit of the electronic component, the contact point between the electronic component and the busbar, and the busbar during power-on is easily absorbed by the cooling member through the mounting wall. In addition, since the pair of conductive members are arranged to sandwich the cooling member in the middle, the heat absorption capacity of the cooling member can be used without waste, compared with the case where only one outer surface of the cooling member is used for heat absorption, so the electrical junction box having this configuration has excellent heat dissipation.

[0009] In addition, compared with a case where a pair of conductive members are simply arranged side by side on one outer surface of the cooling member, the size of the cooling member can be reduced, so that miniaturization and cost reduction of the electrical junction box can be achieved. In addition, when the electrical junction box is used in a posture where the outer surface of the cooling member and the mounting wall of the conductive member extend in the vertical direction (up and down direction), the terminal and the movable contact are arranged to be aligned in the direction intersecting the vertical direction (for example, the lateral direction) in the electronic component connected to the bus. Therefore, for example, even in the case where the component around the movable contact falls off due to aging, excessive external force, etc., the component also falls in the vertical direction, so it can be avoided that the component interferes with the switching of the conductive state and the non-conductive state between the movable contact and the terminal.

[0010] The present disclosure has been briefly described above. In addition, the details of the present disclosure can be clarified by reading the mode for carrying out the disclosure described below with reference to the drawings (hereinafter, referred to as "embodiment"). BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present disclosure will become more fully understood from the detailed description given hereinafter and the accompanying drawings, which are given by way of example only and thus are not limiting of the present disclosure, wherein:

[0012] Figure 1 is a perspective view showing an electric junction box according to an embodiment of the present disclosure;

[0013] Figure 2 Seen through the housing portion of the conductive member Figure 1 A top view of the electrical junction box shown;

[0014] Figure 3 Seen through the housing portion of the conductive member Figure 1 A front view of the electrical junction box shown; and

[0015] Figure 4 This is what we see inside the relay. Figure 1, the cross-sectional view being taken along a horizontal plane in the vicinity of a relay provided in a housing portion of a conductive member. DETAILED DESCRIPTION

[0016] <Example>

[0017] Hereinafter, an electric junction box 1 according to an embodiment of the present disclosure will be described with reference to the accompanying drawings. The electric junction box 1 is generally mounted on a vehicle and used. For example, a junction box, a relay box, etc. may be used as the electric junction box 1, but the electric junction box 1 is not limited thereto. Figure 1 As shown in FIG. 1 and FIG. 2 , the electric junction box 1 includes a cooling member 2 and a pair of conductive members 3A and 3B disposed to sandwich the cooling member 2. The cooling member 2 and the pair of conductive members 3A and 3B are fixed to each other by fastening using bolts 4 and nuts 5.

[0018] In the following, for the convenience of description, Figures 1 to 4 As shown, "front-rear direction", "left-right direction" and "up-down direction" are defined. "Front-rear direction", "left-right direction" and "up-down direction" are orthogonal to each other. When the electrical junction box 1 is mounted on a vehicle, the "up-down direction" matches the up-down direction (vertical direction) of the vehicle. The "front-rear direction" and "left-right direction" are defined only for the convenience of description, and when the electrical junction box 1 is mounted on a vehicle, they do not necessarily match the front-rear direction and left-right direction of the vehicle. Hereinafter, the components constituting the electrical junction box 1 will be described in order.

[0019] First, the cooling member 2 will be described. Figure 1 and 2 As shown, the cooling member 2 has a rectangular main body portion 10 extending in the left-right direction and the up-down direction and thinner in the front-back direction. The main body portion 10 is made of, for example, metal or resin. An inlet channel 11 and an outlet channel 12 connected to the interior of the main body portion 10 are provided on the right side wall of the main body portion 10, and the inlet channel 11 and the outlet channel 12 are connected to a radiator (not shown) located outside the cooling member 2. The cooling water cooled by the radiator is introduced into the main body portion 10 through the inlet channel 11 by a pump (not shown) or the like, and absorbs heat from the outside through the outer wall of the main body portion 10. The cooling water that has absorbed heat (been heated) returns to the radiator from the inside of the main body portion 10 through the outlet channel 12 and is cooled again. By repeating such a cycle, the cooling member 2 is used to absorb heat from the outer surface of the main body portion 10 and dissipate the heat to the outside.

[0020] Next, a pair of conductive members 3A and 3B will be described. Figure 1 and 2 As shown, the pair of conductive members 3A and 3B have the same outer shape and are different from each other except for the presence or absence of a fuse 40 to be described later and the arrangement of a bus bar 50 (see Figure 2 ), have the same structure except for the above. The pair of conduction members 3A and 3B are arranged to clamp the cooling member 2 in the front-to-back direction in a state where the orientations in the front-to-back direction are opposite to each other (a state where each two corresponding flange portions 22 face each other in the front-to-back direction to be described later). The weight of the pair of conduction members 3A and 3B is preferably substantially the same, so that when the pair of conduction members 3A and 3B are assembled to the cooling member 2, there is no excessive difference in weight between the front and rear sides of the cooling member 2. Hereinafter, first, the conduction member 3A of the pair of conduction members 3A and 3B will be described.

[0021] like Figures 1 to 3 As shown, the conductive component 3A includes a housing portion 20 having a box shape, a plurality of relays 30 and fuses 40 arranged in the housing portion 20, and a plurality of bus bars 50 arranged on a mounting wall 21 which is a box wall of the housing portion 20 and electrically connected to the plurality of relays 30 and fuses 40.

[0022] The housing portion 20 is in a rectangular box shape extending in the left-right direction and the up-down direction, and is thick in the front-back direction. For example, the housing portion 20 is made of resin. The front side wall of the housing portion 20 (a rectangular flat plate-shaped wall extending in the left-right direction and the up-down direction, which is arranged to face the rear side wall of the cooling member 2) serves as a mounting wall 21 (see FIG. 2 ) provided with the busbar 50. Figure 2 and Figure 4 A plurality of through holes 23 penetrating from the inside to the outside of the mounting wall 21 are formed in a portion of the mounting wall 21 where the busbar 50 is provided (see FIG. Figure 4 ). The operation achieved by providing such a through hole 23 will be described later. A pair of left and right flange portions 22 are provided on the housing portion 20 to continuously extend outward from the mounting wall 21 in the left and right directions. A plurality of through holes (not shown) into which the bolts 4 are inserted are provided in each flange portion 22 to be aligned in the up-down direction. The flange portion 22 is a portion for performing the above-mentioned fastening using the bolts 4 and the nuts 5.

[0023] like Figure 2 As shown, two relays 30 and one fuse 40 are arranged in the housing portion 20, aligned in the left-right direction along the inner surface of the mounting wall 21 near the inner surface of the mounting wall 21. The relay 30 is a component that performs a switching function of turning on and off the power supply, and the fuse 40 is a component that performs a fuse function of disconnecting the power supply when a current exceeding the rated current flows. A plurality of flat-plate-shaped busbars 50 are arranged on the mounting wall 21 to face the inner surface of the mounting wall 21, and are aligned in the left-right direction along the inner surface. Specifically, the plurality of busbars 50 are arranged so that a pair of right and left busbars 50 corresponding to each relay 30 and fuse 40 are electrically connected.

[0024] In the following, reference will be made to Figure 4 Briefly describe the internal structure of the relay 30 and the connection structure between the relay 30 and a pair of busbars 50. The relay 30 includes a pair of metal terminals 31 arranged to protrude from one side wall (front side wall) of the housing of the relay 30 to the outside, a metal movable contact 32 arranged inside the housing of the relay 30 and capable of mechanically switching between a plurality of terminals 31, a coil 33 arranged inside the housing of the relay 30 and driving the movable contact 32, and a contact spring 35 arranged inside the housing of the relay 30 and arranged between the core 34 of the coil 33 and the movable contact 32. The contact spring 35 constantly biases the movable contact 32 toward the conductive side (front side). When the coil 33 is energized, the coil 33 applies an attractive force to overcome the biasing force of the contact spring 35 and drive the movable contact 32 to the non-conductive side (rear side). As described above, the relay 30 can mechanically switch between the conductive state and the non-conductive state between the plurality of terminals 31 by switching the non-energization and energization of the coil 33.

[0025] In the relay 30, the movable contact 32 is located at a position (rear position) farther from one side wall (front side wall) of the relay 30 housing than the plurality of terminals 31, and the plurality of terminals 31 and the movable contact 32 are positioned so as to be aligned in the front-to-back direction. Therefore, for example, even in the case where a component (e.g., coil 33) around the movable contact 32 falls off due to aging degradation, excessive external force, etc., the component falls in the vertical direction, so that the component can be prevented from interfering with the switching between the conductive state and the non-conductive state between the movable contact 32 and the plurality of terminals 31.

[0026] Each of the plurality of terminals 31 of the relay 30 is fastened and fixed to the corresponding busbar 50 by a metal bolt 51 in a recess of a corresponding one of the pair of corresponding busbars 50. Therefore, the pair of busbars 50 and the relay 30 are fixed to each other, and the pair of busbars 50 are electrically connected to the relay 30. The conductive member 3A of the pair of conductive members 3A and 3B has been described above.

[0027] Next, the conductive member 3B of the pair of conductive members 3A and 3B will be described. The conductive member 3B has the same outer shape as the conductive member 3A. The conductive member 3B has the same structure as the conductive member 3A, except that the fuse 40 is not provided and the arrangement of the busbar 50 is correspondingly different (see FIG. Figure 2 ). Therefore, description of other detailed structures of the conductive member 3B will be omitted. The components constituting the electrical junction box 1 have been described above.

[0028] Next, the assembly of the electrical junction box 1 will be described. To assemble the electrical junction box 1, as shown in FIG. Figure 1As shown, the conductive members 3A and 3B are respectively arranged at the rear and front sides of the cooling member 2 so that the pair of conductive members 3A and 3B sandwich the cooling member 2 in the front-rear direction. Next, a gap (see FIG. 1 ) is formed between the outer surface of the mounting wall 21 of the conductive member 3A and the outer surface of the main body portion 10 of the cooling member 2 facing each other. Figure 4 ), and a gap between the outer surface of the mounting wall 21 of the conductive member 3B and the outer surface of the main body 10 of the cooling member 2, which face each other, is filled with a paste-like heat transfer paste 70 having excellent heat transfer performance. Next, the cooling member 2 and the pair of conductive members 3A and 3B are fastened and fixed by using a plurality of nuts 5 and a plurality of bolts 4, which are jointly inserted into through holes (not shown) provided in the flange portions 22 of the pair of conductive members 3A and 3B and the main body 10 of the cooling member 2. Next, a bus bar 50 provided on the mounting wall 21 of the conductive member 3A and a bus bar 50 provided on the mounting wall 21 of the conductive member 3B are electrically connected to each other via a connecting bus bar 60 provided outside the shell portions 20 of the conductive members 3A and 3B (see Figure 2 ). Thus, the assembly of the electrical junction box 1 is completed, and the Figure 1 The electrical junction box 1 shown in FIG. 5 may be connected to each other by using electric wires instead of connecting the busbars 60 .

[0029] Here, in this example, Figure 1 As shown in FIG. 1 and FIG. 2 , positions where the bolts 4 are inserted from the front side and fastened to the rear side nuts 5 and positions where the bolts 4 are inserted from the rear side and fastened to the front side nuts 5 are alternately arranged in the up-down direction on the left and right sides of the electrical junction box 1. Therefore, compared with a mode in which the bolts 4 are inserted from one side in the front-to-back direction and fastened to the nuts 5 on the other side in the front-to-back direction at all fastening positions on the left and right sides of the electrical junction box 1, external forces applied to the pair of conductive members 3A and 3B approaching each other by fastening are more likely to be evenly dispersed, and thus inclination (lifting) of the pair of conductive members 3A and 3B relative to the cooling member 2, etc. is less likely to occur.

[0030] When the electrical junction box 1 is assembled, Figure 2 and Figure 4As shown, the pair of conductive members 3A and 3B are arranged so that the outer surface of the mounting wall 21 of the conductive members 3A and 3B provided with the busbar 50 faces the outer surface of the cooling member 2 and sandwiches the cooling member 2. Therefore, when the pair of conductive members 3A and 3B are energized, the Joule heat generated in the internal circuit of the relay 30 (particularly, the movable contact 32 and the coil 33), the contact between the relay 30 and the fuse 40 and the busbar 50, and the busbar 50 is easily absorbed by the cooling member 2 via the mounting wall 21 and the heat transfer paste 70. In addition, the pair of conductive members 3A and 3B are arranged to sandwich the cooling member 2, so the heat absorption capacity of the cooling member 2 can be used without waste, compared with the case where only one outer surface of the cooling member 2 is used for heat absorption.

[0031] In addition, in the assembled state of the electrical junction box 1, as shown in FIG. Figure 4 As shown, for each of the conductive members 3A and 3B, a portion of the heat transfer paste 70 provided in the gap between the outer surface of the mounting wall 21 and the outer surface of the main body portion 10 of the cooling member 2 facing each other passes through the plurality of through holes 23 provided in the mounting wall 21, spreads to the inner surface side of the mounting wall 21, and contacts the bus bar 50 facing the inner surface of the mounting wall 21 (see FIG. Figure 4 ). In other words, the heat transfer paste 70 contacts the cooling member 2 and the busbar 50 via the through hole 23. Therefore, the Joule heat generated in the contact points between the relay 30 and the fuse 40 and the busbar 50 and the busbar 50 can be effectively transferred to the cooling member 2 via the heat transfer paste 70.

[0032] Furthermore, in the assembled state of the electrical junction box 1, the plurality of bolts 4 and the plurality of nuts 5 fix the pair of conductive members 3A and 3B while applying an external force to bring the pair of conductive members 3A and 3B close to each other. Therefore, it is possible to maintain a state in which the mounting wall 21 of the housing portion 20 of each of the conductive members 3A and 3B is disposed close to the outer surface of the cooling member 2. Furthermore, since the relatively heavy cooling member 2 is disposed between the pair of conductive members 3A and 3B, the center of gravity of the electrical junction box 1 is located at the center of the electrical junction box 1. Therefore, the stability of the entire electrical junction box 1 is improved.

[0033] <Operations and Effects>

[0034] As described above, according to the electric junction box 1 of the present embodiment, the pair of conductive members 3A and 3B including the relay 30, the fuse 40 and the bus bar 50 are arranged so that the outer surface of the mounting wall 21 of the conductive members 3A and 3B provided with the bus bar 50 faces the outer surface of the cooling member 2 and sandwiches the cooling member 2. Therefore, the Joule heat generated in the internal circuit of the relay 30 (particularly, the movable contact 32 and the coil 33), the contact between the relay 30 and the fuse 40 and the bus bar 50, and the bus bar 50 during power-on is easily absorbed by the cooling member 2. In addition, the pair of conductive members 3A and 3B are arranged to sandwich the cooling member 2, so the heat absorption capacity of the cooling member 2 can be used without waste, compared with the case where only one outer surface of the cooling member 2 is used for heat absorption. Therefore, the electric junction box 1 according to the present embodiment has good heat dissipation.

[0035] Furthermore, compared with a case where a pair of conductive members 3A and 3B are provided side by side on one outer surface of the cooling member 2 , the size of the cooling member 2 can be reduced, and thus miniaturization and cost reduction of the electric junction box 1 can be achieved.

[0036] In addition, the electrical junction box 1 is used in a posture in which the outer surface of the cooling member 2 that performs heat absorption and the mounting wall 21 of the conductive members 3A and 3B extend in the vertical direction. Therefore, in the relay 30 connected to the busbar 50, the terminal 31 and the movable contact 32 are positioned to be aligned in a direction (front-rear direction) intersecting the vertical direction. Therefore, for example, even in the case where a component (e.g., coil 33) around the movable contact 32 falls off due to aging degradation, excessive external force, etc., the component also falls in the vertical direction, so it is possible to avoid the component interfering with the switching between the conductive state and the non-conductive state between the movable contact 32 and the terminal 31.

[0037] In addition, the heat transfer paste 70 provided through the through hole 23 of the housing portion 20 of the conductive members 3A and 3B contacts both the cooling member 2 and the busbar 50. Therefore, the Joule heat generated in the contact points between the relay 30 and the fuse 40 and the busbar 50 and in the busbar 50 can be effectively transferred to the cooling member 2 via the heat transfer paste 70. Therefore, the electric junction box 1 according to the present embodiment has better heat dissipation performance.

[0038] In addition, the plurality of bolts 4 and the plurality of nuts 5 fix the pair of conductive members 3A and 3B, and at the same time, external force is applied to bring the pair of conductive members 3A and 3B closer to each other. Therefore, the state in which the mounting wall 21 of the housing portion 20 of each of the conductive members 3A and 3B is arranged close to the outer surface of the cooling member 2 can be maintained, so that good heat dissipation can be maintained for a long time.

[0039] <Other embodiments>

[0040] The present disclosure is not limited to the above-mentioned embodiments, and various modifications can be adopted within the scope of the present disclosure. For example, the present disclosure is not limited to the above-mentioned embodiments, and modifications, improvements, etc. can be appropriately made. In addition, the materials, shapes, sizes, quantities, arrangement positions, etc. of the components in the above-mentioned embodiments are freely selected and are not limited as long as the present disclosure can be implemented.

[0041] Here, the features of the above-described embodiment of the electrical junction box 1 will be briefly summarized and listed in the following [1] to [3].

[0042] [1] An electrical junction box (1), comprising:

[0043] a cooling member (2) capable of absorbing heat from the outer surface and dissipating the heat to the outside; and

[0044] A pair of conductive members (3A, 3B) are arranged to sandwich the cooling member (2), wherein

[0045] Each of a pair of conductive members (3A, 3B) includes a housing portion (20) having a box shape, electronic components (30, 40) disposed inside the housing portion (20), and a bus bar (50) disposed on a mounting wall (21) as one of the box walls of the housing portion (20) and electrically connected to the electronic components (30, 40), and each of the pair of conductive members (3A, 3B) is disposed so that an outer surface of the mounting wall (21) faces an outer surface of a cooling member (40), and

[0046] The electronic component (30) includes a plurality of terminals (31) arranged on a side wall of the electronic component (30) and connected to a busbar (50), and a movable contact (32) arranged inside the electronic component (30) and capable of mechanically switching a conductive state and a non-conductive state between predetermined terminals (31) among the plurality of terminals (31), and the electronic component (30) is configured such that the movable contact (32) is located at a position farther from the side wall than the plurality of terminals (31) in the electronic component (30).

[0047] According to the electrical junction box having the above-mentioned [1] configuration, a pair of conductive members each containing an electronic component and a bus bar is arranged so that the outer surface of the mounting wall of these conductive members faces the outer surface of the cooling member and sandwiches the cooling member. Therefore, the Joule heat generated in the internal circuit of the electronic component, the contact point between the electronic component and the bus bar, and the bus bar during power-on is easily absorbed by the cooling member through the mounting wall. In addition, since the pair of conductive members are arranged so as to sandwich the cooling member, the heat absorption capacity of the cooling member can be used without waste, compared with the case where only one outer surface of the cooling member is used for heat absorption, and thus the electrical junction box having the present configuration has good heat dissipation performance.

[0048] In addition, compared with a case where a pair of conductive members are simply arranged side by side on one outer surface of the cooling member, the size of the cooling member can be reduced, so that miniaturization and cost reduction of the electrical junction box can be achieved. In addition, when the electrical junction box is used in a posture where the outer surface of the cooling member and the mounting wall of the conductive member extend in the vertical direction (up and down direction), in the electronic component connected to the bus, the terminal and the movable contact are arranged to be aligned in a direction intersecting with the vertical direction (for example, the lateral direction). Therefore, for example, even in the case where the component around the movable contact falls off due to aging, excessive external force, etc., the component also falls in the vertical direction, so that the component can be avoided from interfering with the switching of the conductive state and the non-conductive state between the movable contact and the terminal.

[0049] [2] The electrical junction box (1) according to the above [1] further includes:

[0050] A heat transfer member (70) is configured to transfer heat between the cooling member (2) and each of the pair of conductive members (3A, 3B), wherein

[0051] The housing portion (20) of each of the pair of conductive members (3A, 3B) has a through hole (23) penetrating from the inside to the outside of the mounting wall (21), and

[0052] The heat transfer member (70) is disposed to pass through the through hole (23) and to contact the cooling member (2) and the bus bar (50) disposed on the mounting wall (21).

[0053] According to the electrical junction box having the above-mentioned [2] configuration, the heat transfer member provided to pass through the through hole of the housing portion of the conductive member contacts both the cooling member and the busbar. Therefore, the Joule heat generated in the internal circuit of the electronic component, the contact point between the electronic component and the busbar, and the busbar can be effectively transferred to the cooling member via the heat transfer member. Therefore, the electrical junction box having the present configuration has better heat dissipation performance.

[0054] [3] The electrical junction box (1) according to the above [1] further includes:

[0055] A fastening member (4, 5) fixes the pair of conductive members (3A, 3B) while applying an external force to bring the pair of conductive members (3A, 3B) closer to each other.

[0056] According to the electrical junction box having the above-mentioned [3] configuration, the fastening member fixes the pair of conductive members while applying an external force to bring the pair of conductive members closer to each other. Therefore, the state in which the mounting wall of the housing portion of each conductive member is arranged close to the outer surface of the cooling member can be maintained, so that good heat dissipation can be maintained for a long time.

Claims

1. An electrical junction box, comprising: a cooling member capable of absorbing heat from the outer surface and dissipating the heat to the outside; and a pair of conductive members arranged to sandwich the cooling member, wherein: Each of the pair of conductive members includes a housing portion having a box shape, an electronic component provided inside the housing portion, and a bus bar provided on a mounting wall as one box wall of the housing portion and electrically connected to the electronic component, and each of the pair of conductive members is provided so that an outer surface of the mounting wall faces an outer surface of the cooling member; and The electronic component includes a plurality of terminals and a movable contact, the plurality of terminals being arranged on a side wall of the electronic component and connected to the bus bar, the movable contact being arranged inside the electronic component and capable of mechanically switching a conductive state and a non-conductive state between predetermined terminals among the plurality of terminals, and the electronic component is configured so that the movable contact is located at a position farther away from the side wall than the plurality of terminals in the electronic component.

2. The electrical junction box according to claim 1, further comprising: a heat transfer member configured to transfer heat between each of the pair of conductive members and the cooling member, wherein: The housing portion of each of the pair of conductive members has a through hole penetrating from the inside to the outside of the mounting wall; and The heat transfer member is disposed to pass through the through hole and to contact the cooling member and the bus bar disposed on the installation wall.

3. The electrical junction box according to claim 1, further comprising: A fastening member fixes the pair of conductive members while applying an external force to bring the pair of conductive members closer to each other.

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