TWI445265B - A junction box with display device - Google Patents

Description

Photoelectric junction box with display device

The present invention relates to a photovoltaic junction box, and more particularly to a photovoltaic junction box having a display device.

As environmental protection and energy conservation issues have received increasing attention, solar cell modules have gradually flourished. Therefore, the demand for photovoltaic junction boxes for solar cell modules is also increasing.

Referring to Figure 1, a schematic perspective view of a conventional photovoltaic junction box is shown. The photoelectric junction box 1 includes an upper cover (not shown), a casing 10, and a plurality of clamping devices 20. The casing 10 has an outer side wall 11, two joints 12, a plurality of card protrusions 13 and an opening 14. The outer side wall 11 extends upward from the periphery of the casing 10. The connectors 12 are located on one side of the outer side wall 11, each connector 12 is for an external cable 2 to pass through, and the other end of the external cable 2 is connected to an external power supply device (not shown). . The card projections 13 are located inside the casing 10. The opening 14 is located on the side of the casing 10 opposite to one of the joints 12 for a plurality of external wires 15 to pass through. The other end of the external lead 15 is connected to a solar cell module (not shown).

The clamping device 20 includes two first clamps 21, two second clamps 22 and two connecting pieces 23. The first jig 21, the second jigs 22, and the connecting pieces 23 are made of a conductive material. Each of the first clamps 21 is located in a card protrusion 13 and has two clips for clamping one end of the external lead 15 and the connecting piece 23. Each of the second clamps 22 is located in a card protrusion 13 and has two clips for clamping the connection piece 23 and the plurality of pins 17 of the reverse current protection device 16 (for the sake of neatness, only one is shown here) The current protection device 16 is reversed, but each of the reverse current protection devices 16 is located between the second clamps 22).

The disadvantages of the conventional photoelectric junction box 1 are as follows. When the solar cell module is operating normally, the output current is biased to the solar cell module itself, but the reverse current protection device 16 is reverse biased, so that the reverse current protection device 16 is not heated. . However, when the solar cell module malfunctions or generates a hot spot, the output current is reversed to the solar cell module, and the reverse current protection device 16 is reversed. The reverse current protection device 16 heats up to disperse the heat source of the solar cell module itself to achieve the protection of the solar cell module. According to the above discussion, the reverse current protection device 16 of the prior art is located between the second clamps 22, and when the solar battery module fails or generates a heat shift, the reverse current protection device 16 dissipates heat. It is not easy, and the photoelectric junction box 1 has a risk of being burnt out at any time.

In addition, the conventional photoelectric junction box 1 does not have any detecting means for indicating whether the solar battery module has failed or generates a heat shift. That is, when the solar cell module fails or generates a heat shift, the conventional photoelectric junction box 1 does not see any abnormality or change from the appearance, so that the user cannot observe the conventional photoelectric junction box 1 by It is not convenient to use whether the solar cell module is malfunctioning or generates a heat shift.

The invention provides a photoelectric junction box comprising a conductor portion, a first conductive element, a first reverse current protection device, a first electromagnetic device and a first display device. The first conductive element is used to electrically connect a first external lead. The first reverse current protection device electrically connects the conductor portion and the first conductive element. The first electromagnetic device is located between the first conductive element and the first reverse current protection device, and is electrically connected to the first conductive element and the first reverse current protection device, and the first electromagnetic device is Generate magnetic force. The first display device is driven by the magnetic force of the first electromagnetic device to produce a display effect. Thereby, the user can understand the condition of the solar cell module to which the photoelectric junction box is connected by observing the display state of the first display device.

In an embodiment, the photoelectric junction box further includes a second conductive component, a second reverse current protection device, a second electromagnetic device, a second display device, a third conductive component, and a third reverse current protection. The device, a third electromagnetic device and a third display device can be connected to more solar battery modules.

Referring to Figure 2, there is shown a perspective exploded view of one embodiment of the photovoltaic junction box of the present invention. The photoelectric junction box 3 includes a conductor portion 31, a first conductive element 32, a first reverse current protection device 33, a first electromagnetic device 34, and a first display device 35.

The first conductive component 32 is electrically connected to a first external lead 41. The first reverse current protection device 33 electrically connects the conductor portion 31 and the first conductive element 32. The first electromagnetic device 34 is located between the first conductive element 32 and the first reverse current protection device 33 and electrically connected to the first conductive element 32 and the first reverse current protection device 33. The first electromagnetic device 34 generates a magnetic force when a current passes. The first display device 35 is driven by the magnetic force of the first electromagnetic device 34 to produce a display effect.

Please refer to FIG. 2 and FIG. 3 at the same time, wherein FIG. 3 shows a three-dimensional combination diagram of an embodiment of the photoelectric junction box of the present invention. In this embodiment, the photoelectric junction box 3 further includes a casing. The housing includes an upper cover 36, a spacer portion 37, a main box body 38 and a side cover portion 39. The upper cover 36 is detachably attached to the main casing 38 and has at least one display window 361 corresponding to the first display device 35. The spacer 37 is located in the main casing 38 to define a first accommodating space 51. The spacer portion 37 and the side cover portion 39 define a second accommodating space 52. The spacer 37 has at least one through hole 371. The conductor portion 31 and the first conductive element 32 are located in the first accommodating space 51 , and the first reverse current protection device 33 is located in the second accommodating space 52 .

In this embodiment, the conductor portion 31 is a grounding conductive component for electrically connecting a first external cable 53 and a grounding external conductor 42. The first external cable 53 is connected to an external power supply unit (not shown) that is not electrically connected to any solar battery module. The first external lead 41 is electrically connected to at least one first solar cell module (not shown). The first reverse current protection device 33 is a bypass diode.

4 to FIG. 6 , wherein FIG. 4 shows a partial enlarged view of the area A of FIG. 2 , FIG. 5 shows a perspective view of an embodiment of the photoelectric junction box of the present invention, and FIG. 6 shows another angle of FIG. The view. In the embodiment, the photoelectric junction box 3 further includes an intermediate conductor plate 61, a first intermediate plate 62 and a first bearing portion 63. The first reverse current protection device 33 is electrically connected to the intermediate conductor plate 61 and the first intermediate plate 62. The intermediate conductor 61 is electrically connected to the conductor portion 31, and the first intermediate plate 62 is electrically connected to the first conductive member 32. The first bearing portion 63 is made of an insulating material and is located on the first intermediate plate 62 for carrying the first electromagnetic device 34.

The first electromagnetic device 34 includes a first magnetic bar 64 and a first coil 65. The first coil 65 is sleeved on the first magnetic bar 64 and electrically connected to the first reverse current protection device 33 and The first conductive element 32. When the current passes through the first coil 65, the first magnetic bar 64 generates a magnetic force to drive the first display device 35. Specifically, the first magnetic bar 64 is made of metal, and the first coil 65 is covered with an insulating material and insulated from the first magnetic bar 64.

The first display device 35 includes a first body 351, a first rotating shaft 352, a first magnetic attraction area 353, a first display panel 354, and a spring 355. The first body 351 has a first end 3511 and a second end 3512. The first rotating shaft 352 is located on the first body 351 and between the first end 3511 and the second end 3512. The first magnetic attraction region 353 is located at the first end 3511. The first display panel 354 is located at the second end 3512 and has a first display area 3541 and a second display area 3542. The first display area 3541 and the second display area 3542 have an angle between them and are marked with different colors. The position of the first magnetic attraction region 353 is corresponding to the first electromagnetic device 34, and is attracted or repelled by the first magnetic conductive bar 64 of the first electromagnetic device 34, so that the first body 351 is at the first rotating shaft 352 is an angle of rotation of the axis.

The spring 355 is sleeved on the first rotating shaft 352, and one end thereof abuts against the first body 351, and the other end abuts against the main box body 38. When the first electromagnetic device 34 generates a magnetic force to drive the first body 351, the spring 355 is compressed to store the elastic potential energy. When the first electromagnetic device 34 does not generate a magnetic force, the spring 355 rotates to release the elastic position energy to drive the first body 351. Therefore, the first display panel 354 can be switched between the first display area 3541 and the second display area 3542. In general, the magnetic force generated by the first electromagnetic device 34 can generally overcome the elastic force of the spring 355, so that the first body 351 can be rotated; otherwise, when the magnetic force of the first electromagnetic device 34 disappears, the spring 355 The first body 351 is restored.

Preferably, the first body 351, the first rotating shaft 352 and the first display panel 354 are integrally formed, and the first magnetic attraction region 353 has an iron piece, and the iron piece forms the first electromagnetic device 34. The medium that magnetic attraction attracts.

In the embodiment, the photoelectric junction box 3 further includes a second conductive element 32a, a second reverse current protection device 33a, a second electromagnetic device 34a and a second display device 35a. The second conductive element 32a, the second reverse current protection device 33a, the second electromagnetic device 34a and the second display device 35a are respectively associated with the first conductive element 32, the first reverse current protection device 33, and the first An electromagnetic device 34 is identical to the first display device 35 and is described below.

The second conductive member 32a is electrically connected to a second external lead wire 41a (FIG. 2) for electrically connecting at least one second solar battery module (not shown).

The second reverse current protection device 33a is a bypass diode. The second reverse current protection device 33a is electrically connected to the first conductive element 32 and the second conductive element 32a.

The second electromagnetic device 34a is located between the second conductive element 32a and the second reverse current protection device 33a, and is electrically connected to the second conductive element 32a and the second reverse current protection device 33a. The second electromagnetic device 34a generates a magnetic force when a current passes. The second display device 35a is driven by the magnetic force of the second electromagnetic device 34a to produce a display effect.

The photoelectric junction box 3 further includes a second intermediate plate 62a and a second receiving portion 63a. The second reverse current protection device 33a is electrically connected to the first intermediate plate 62 and the second intermediate plate 62a. The second intermediate plate 62a is electrically connected to the second conductive element 32a. The second bearing portion 63a is made of an insulating material and is located on the second intermediate plate 62a for carrying the second electromagnetic device 34a.

The second electromagnetic device 34a includes a second magnetic bar 64a and a second coil 65a. The second coil 65a is sleeved on the second magnetic bar 64a and electrically connected to the second reverse current protection device 33a. The second conductive element 32a. When the current passes through the second coil 65a, the second magnetic bar 64a generates a magnetic force to drive the second display device 35a.

The second display device 35a includes a second body 351a, a second rotating shaft 352a, a second magnetic attraction area 353a, a second display panel 354a, and a spring (not shown). The second body 351a has a first end 3511a and a second end 3512a. The second shaft 352a is located on the second body 351a and is located between the first end 3511a and the second end 3512a. The second magnetic attraction region 353a is located at the first end 3511a. The second display panel 354a is located at the second end 3512a and has a first display area 3541a and a second display area 3542a. The first display area 3541a and the second display area 3542a have an angle between them and are marked with different colors. The position of the second magnetic attraction region 353a is corresponding to the second electromagnetic device 34a, and is attracted or repelled by the second magnetic conductive bar 64a of the second electromagnetic device 34a, so that the second body 351a is the second rotating shaft 352a is an angle of rotation of the axis.

The spring sleeve is sleeved on the second rotating shaft 352a, and one end thereof abuts against the second body 351a, and the other end abuts against the main box body 38. When the second electromagnetic device 34a generates a magnetic force to drive the second body 351a, the spring is compressed to store the elastic potential energy. When the second electromagnetic device 34a does not generate a magnetic force, the spring rotates to release the elastic potential energy to drive the second body 351a. Therefore, the second display panel 354a can be switched between the first display area 3541a and the second display area 3542a.

In this embodiment, the photoelectric junction box 3 further includes a third conductive element 32b, a third reverse current protection device 33b, a third electromagnetic device 34b, a third display device 35b, a third intermediate plate 62b, and a second carrying portion 63b. The third conductive element 32b, the third reverse current protection device 33b, the third electromagnetic device 34b and the third display device 35b are respectively associated with the first conductive element 32, the first reverse current protection device 33, and the third An electromagnetic device 34, the first display device 35, the first intermediate plate 62, and the first carrier portion 63 are the same, and will not be described again. Referring to FIG. 2, the third conductive component 32b is electrically connected to a second external cable 54, and the second external cable 54 is connected to the external power supply device (not shown). The third conductive member 32b is electrically connected to a third external lead 41b. The third external lead 41b is electrically connected to at least one third solar battery module (not shown). The first external connecting wire 41 is electrically connected to the second external connecting wire 41a, and the second external connecting wire 41a and the third external connecting wire 41b are electrically connected. Sexual connection.

The operation mode of the photoelectric junction box 3 is as follows. Referring to FIG. 2, at least one first solar cell module is electrically connected to the first conductive component 32 via the first external conductive wire 41, and at least one second solar cell module is electrically connected to the second external solar cell module via the second external conductive wire 41a. The second conductive element 32a and the at least one third solar cell module are electrically connected to the third conductive element 32b via the third external lead 41b. When the at least one first solar cell module, the at least one second solar cell module, and the at least one third solar cell module operate normally (ie, are not faulty or generate a heat shift), the current does not pass through the first The reverse current protection device 33, the second reverse current protection device 33a, and the third reverse current protection device 33b are directly derived from the conductor portion 31 and the third conductive element 32b to the external power supply device. As a result, the first electromagnetic device 34, the second electromagnetic device 34a, and the third electromagnetic device 34b do not generate a magnetic force. At this time, the first display device 35, the second display device 35a, and the third display device 35b will not have any action.

If only the at least one first solar cell module fails or generates a hot shift, current flows from the grounding external conductor 42 through the conductor portion 31, the intermediate conductor 61, the first reverse current protection device 33, and the middle. The board 62, the first conductive element 32, the first external lead 41, the second external lead 41a, the third external lead 41b, and the third conductive element 32b are finally led out to the external power supply device. At this time, current flows through the intermediate plate 62 through the first electromagnetic device 34, and the first electromagnetic device 34 generates a magnetic force to drive the first display device 35 to change the display state of the first display device 35. Similarly, if the at least one second solar cell module fails or generates a hot shift, the second display device 35a is driven to change its display state; if the at least one third solar cell module fails or generates a hot class At this time, the third display device 35b is driven to change its display state. Therefore, the first display device 35, the second display device 35a, and the third display device 35b can immediately react to the at least one first solar cell module, the at least one second solar cell module, and the at least one third Whether the solar cell module is faulty or generates a hot shift. In short, the user can understand the condition of the solar cell module connected to the photoelectric junction box 3 by observing the display window 361 of the upper cover 36.

Referring to Figure 7, a perspective view of another embodiment of the photovoltaic junction box of the present invention is shown. The photoelectric junction box 3a of the present embodiment is substantially the same as the photoelectric junction box 3 of Fig. 3, wherein the same elements are given the same reference numerals. The difference between the photoelectric junction box 3a of the present embodiment and the photoelectric junction box 3 of FIG. 3 is that, in the embodiment, the photoelectric junction box 3a further includes a heat dissipating device 40 located on the side cover portion 39 for The heat on the side cover portion 39 is diverged. The material of the heat sink 40 is, but not limited to, an aluminum alloy, and has a plurality of heat dissipation fins.

Referring to Figure 8, there is shown a perspective view of another embodiment of the photovoltaic junction box of the present invention. The photoelectric junction box 3b of the present embodiment is substantially the same as the photoelectric junction box 3 of Fig. 6, wherein the same elements are given the same reference numerals. The photoelectric junction box 3b of the present embodiment is different from the photoelectric junction box 3 of Fig. 6 in that, in the embodiment, the first display device is a pointer type indicator 70 having a pointer. The first magnetic bar 64 extends to the pointer indicator 70 such that the pointer is rotated by the magnetic force of the first electromagnetic device 34. Thereby, the user can observe the rotation of the pointer to know the condition of the connected first solar battery module. Similarly, the second display device and the third display device may also be pointer indicators.

Referring to Fig. 9, there is shown a perspective view of another embodiment of the photovoltaic junction box of the present invention. The photoelectric junction box 3c of the present embodiment is substantially the same as the photoelectric junction box 3 of Fig. 6, wherein the same elements are given the same reference numerals. The difference between the photoelectric junction box 3c of the embodiment and the photoelectric junction box 3 of FIG. 6 is that, in the embodiment, the first display device comprises a magnetic piece 71 and a magnetic powder 72, and the magnetic powder 72 is distributed on the magnetic On the film 71. The position of the magnetic piece 71 corresponds to the first electromagnetic device 34, and the first magnetic conductive bar 64 extends to the magnetic piece 71 such that the magnetic powder 72 is attracted by the magnetic force of the first electromagnetic device 34 to display a pattern.

Referring to Figure 10, there is shown a perspective view of another embodiment of the photovoltaic junction box of the present invention. The photoelectric junction box 3d of the present embodiment is substantially the same as the photoelectric junction box 3 of Fig. 6, wherein the same elements are given the same reference numerals. The difference between the photoelectric junction box 3d of the present embodiment and the photoelectric junction box 3 of FIG. 6 is that, in the embodiment, the first display device is an electronic component 73. The position of the electronic component 73 corresponds to the first electromagnetic device 34, and the first magnetic bar 64 extends to the electronic component 73 such that the electronic component 73 is attracted by the magnetic force of the first electromagnetic device 34 to generate a signal. And transmitting the signal to a central control component (not shown) by using a wired or wireless method, and the user can understand the solar battery module connected to the photoelectric junction box 3d by observing the central control component. situation.

However, the above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.

1. . . Conventional photoelectric junction box

3. . . One embodiment of the photoelectric junction box of the present invention

3a. . . One embodiment of the photoelectric junction box of the present invention

3b. . . One embodiment of the photoelectric junction box of the present invention

3c. . . One embodiment of the photoelectric junction box of the present invention

3d. . . One embodiment of the photoelectric junction box of the present invention

10. . . Box

11. . . Outer side wall

12. . . Connector

13. . . Card protrusion

14. . . Opening

15. . . External wire

16. . . Reverse current protection device

17. . . Pin

20. . . Clamping device

twenty one. . . First fixture

twenty two. . . Second fixture

twenty three. . . Link

31. . . Conductor

32. . . First conductive element

32a. . . Second conductive element

32b. . . Third conductive element

33. . . First reverse current protection device

33a. . . Second reverse current protection device

33b. . . Third reverse current protection device

34. . . First electromagnetic device

34a. . . Second electromagnetic device

34b. . . Third electromagnetic device

35. . . First display device

35a. . . Second display device

35b. . . Third display device

36. . . Upper cover

37. . . Spacer

38. . . Main box

39. . . Side cover

40. . . Heat sink

41. . . First external wire

41a. . . Second external wire

41b. . . Third external wire

42. . . Grounding external wire

51. . . First accommodation space

52. . . Second accommodation space

53. . . First external cable

54. . . Second external cable

61. . . Intermediate conductor plate

62. . . First intermediate board

62a. . . Second intermediate board

62b. . . Third intermediate board

63. . . First carrier

63a. . . Second carrier

63b. . . Second carrier

64. . . First magnetic bar

64a. . . Second magnetic bar

65. . . First coil

65a. . . Second coil

70. . . Pointer indicator

71. . . Magnetic sheet

72. . . Magnetic powder

73. . . Electronic component

351. . . First ontology

351a. . . Second ontology

352. . . First shaft

352a. . . Second shaft

353. . . First magnetic zone

353a. . . Second magnetic zone

354. . . First display panel

354a. . . Second display panel

355. . . spring

361. . . Display window

371. . . Through hole

3511. . . First end

3511a. . . First end

3512. . . Second end

3512a. . . Second end

3541. . . First display area

3541a. . . First display area

3542. . . Second display area

3542a. . . Second display area

Figure 1 shows a schematic perspective view of a conventional photoelectric junction box;

2 is a perspective exploded view showing an embodiment of the photovoltaic junction box of the present invention;

3 is a schematic perspective view showing an embodiment of an optical junction box of the present invention;

Figure 4 shows a partial enlarged view of the area A in Figure 2;

Figure 5 is a perspective view showing the housing omitted in an embodiment of the photoelectric junction box of the present invention;

Figure 6 shows a view of another angle of Figure 5;

Figure 7 is a perspective view showing another embodiment of the photovoltaic junction box of the present invention;

Figure 8 is a perspective view showing another embodiment of the photovoltaic junction box of the present invention;

Figure 9 is a perspective view showing another embodiment of the photovoltaic junction box of the present invention;

Figure 10 is a perspective view showing another embodiment of the photovoltaic junction box of the present invention.

3. . . One embodiment of the photoelectric junction box of the present invention

31. . . Conductor

32. . . First conductive element

32a. . . Second conductive element

32b. . . Third conductive element

33. . . First reverse current protection device

33a. . . Second reverse current protection device

33b. . . Third reverse current protection device

34. . . First electromagnetic device

34a. . . Second electromagnetic device

34b. . . Third electromagnetic device

35. . . First display device

35a. . . Second display device

35b. . . Third display device

37. . . Spacer

38. . . Main box

39. . . Side cover

41. . . First external wire

41a. . . Second external wire

41b. . . Third external wire

42. . . Grounding external wire

51. . . First accommodation space

52. . . Second accommodation space

53. . . First external cable

54. . . Second external cable

61. . . Intermediate conductor plate

62. . . First intermediate board

62a. . . Second intermediate board

62b. . . Third intermediate board

371. . . Through hole

Claims (22)

A photoelectric junction box comprising: a conductor portion; a first conductive component for electrically connecting a first external conductor; a first reverse current protection device electrically connecting the conductor portion and the first conductive component; a first electromagnetic device, located between the first conductive element and the first reverse current protection device, and electrically connected to the first conductive element and the first reverse current protection device, the first electromagnetic device will Generating a magnetic force; and a first display device driven by the magnetic force of the first electromagnetic device to produce a display effect. The photoelectric junction box of claim 1, further comprising a casing, the casing comprising an upper cover, a partition, a main casing and a side cover, the upper cover being detachably attached to the main casing and having At least one display window, the at least one display window is corresponding to the first display device, and the spacer is located in the main box body to define a first accommodating space, the spacer portion and the side cover portion define a first The second accommodating space is located in the first accommodating space, and the first reverse current protection device is located in the second accommodating space. The photoelectric junction box of claim 2, further comprising a heat sink disposed on the side cover portion for dissipating heat on the side cover portion. The photovoltaic junction box of claim 2, wherein the spacer has at least one through hole. The photovoltaic junction box of claim 1, wherein the conductor portion is a grounded conductive member. The photoelectric junction box of claim 1, wherein the conductor portion is electrically connected to a first external cable, the first external cable is connected to an external power supply device, and the first external connection wire is electrically connected. Connecting at least one first solar cell module. The photoelectric junction box of claim 1, wherein the first reverse current protection device is a bypass diode. The photoelectric junction box of claim 1, further comprising an intermediate conductor plate and a first intermediate plate, wherein the first reverse current protection device is electrically connected to the intermediate conductor plate and the first intermediate plate, wherein the intermediate conductor plate is electrically connected The conductor portion is connected to the first intermediate plate electrically connected to the first conductive member. The photoelectric junction box of claim 8 further comprising a first carrying portion on the first intermediate plate for carrying the first electromagnetic device. The photoelectric junction box of claim 1, wherein the first electromagnetic device comprises a first magnetic bar and a first coil, the first coil is sleeved on the first magnetic bar and electrically connected to the first counter The current protection device and the first conductive element, when the current passes through the first coil, the first magnetic bar generates a magnetic force to drive the first display device. The photoelectric junction box of claim 1, wherein the first display device comprises a first body, a first rotating shaft, a first magnetic absorbing area and a first display panel, the first body has a first end and a first a second end, the first rotating shaft is located on the first body and located between the first end and the second end, the first magnetic absorbing area is located at the first end, and the first display panel is located at the second end The second end has a first display area and a second display area, and the position of the first magnetic attraction area corresponds to the first electromagnetic device, and is attracted or repelled by the first electromagnetic device, so that the first body is The first rotating shaft is rotated by an angle, and the first display panel is switchable between the first display area and the second display interval. The photoelectric junction box of claim 11, wherein the first body, the first rotating shaft and the first display panel are integrally formed. The photovoltaic junction box of claim 11, wherein the first magnetic attraction region has an iron piece. The photoelectric junction box of claim 11, wherein the first display area and the second display area have an included angle and are marked with different colors. The photoelectric junction box of claim 1, wherein the first display device is a pointer type indicator having a pointer, and the pointer is rotated by the magnetic force of the first electromagnetic device. The photoelectric junction box of claim 1, wherein the first display device comprises a magnetic piece and a magnetic powder, the magnetic powder is distributed on the magnetic piece, the position of the magnetic piece is corresponding to the first electromagnetic device, and the magnetic powder is A magnetic device is attracted by a magnetic force to display a pattern. The photoelectric junction box of claim 1, wherein the first display device is an electronic component, the position of the electronic component is corresponding to the first electromagnetic device, and the electronic component is attracted by the magnetic force of the first electromagnetic device. A signal. The photoelectric junction box of claim 1, further comprising: a second conductive component for electrically connecting a second external wire, wherein the second external wire is for electrically connecting at least one second solar cell module; a second reverse current protection device electrically connecting the first conductive element and the second conductive element; a second electromagnetic device located between the second conductive element and the second reverse current protection device, and electrically connected to the a second conductive element and the second reverse current protection device, the second electromagnetic device generates a magnetic force when the current passes; and a second display device is driven by the magnetic force of the second electromagnetic device to produce a display effect. The photoelectric junction box of claim 18, further comprising a second intermediate plate, the second reverse current protection device electrically connecting the first intermediate plate and the second intermediate plate, wherein the second intermediate plate is electrically connected to the second intermediate plate Second conductive element. The photoelectric junction box of claim 19, further comprising a second carrying portion on the second intermediate plate for carrying the second electromagnetic device. The photoelectric junction box of claim 18, wherein the second electromagnetic device comprises a second magnetic bar and a second coil, the second coil is sleeved on the second magnetic bar and electrically connected to the second counter The current protection device and the second conductive element, when the current passes through the second coil, the second magnetic bar generates a magnetic force to drive the second display device. The photoelectric junction box of claim 18, wherein the second display device comprises a second body, a second rotating shaft, a second magnetic absorbing area and a second display panel, wherein the second body has a first end and a second a second end, the second shaft is located on the second body and located between the first end and the second end, the second magnetic field is located at the first end, and the second display panel is located at the second end The second end has a first display area and a second display area, and the position of the second magnetic attraction area corresponds to the second electromagnetic device, and is attracted or repelled by the second electromagnetic device, so that the second body is The second rotating shaft rotates at an angle of the axis, and the second display panel is switchable between the first display area and the second display interval.