JP3542727B2 - Electrical element placement box - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric element arranged box for the connection between the said electrical element wiring accommodates an electric element, for example, sun and the solar cell device window or door or top light (skylights, lighting roof) It is used for installation in the frame of a battery window, a solar battery door, or a solar battery top light .
[0002]
[Prior art]
In a solar cell device, a solar cell in which a transparent electrode, a semiconductor film including a semiconductor active layer, and a metal electrode are stacked on a glass substrate is connected in cascade so that a predetermined voltage can be obtained. Such a solar cell device may be installed on a rooftop or a site, or may be formed to have translucency and installed on a window or a door of a building or a house. In the case of the former installation, the terminal box connected to the power extraction wiring and the bypass diode may be installed on the back side of the solar cell device. When incorporating a translucent solar cell device into a window or a door or a frame of a top light , a bypass diode and a crossover wire are directly attached to a power extraction wiring drawn from the solar cell device with a crimp terminal or the like. A method has been adopted in which an insulating tape is sufficiently wound around the connection portion, and the bypass diode or the like is housed in the window, door, or frame of the top light .
[0003]
[Problems to be solved by the invention]
However, since windows and doors are often touched by humans, it is desired to further ensure insulation treatment in the wiring connection. Further, there is a need for a structure that can quickly and reliably perform the connection work between the bypass diode and the wiring or the replacement work thereof.
[0004]
[Means for Solving the Problems]
The electric element arrangement box according to the present invention includes a pedestal portion provided with a terminal for making connection between an electric element and a wiring, and a transparent cover attached to the pedestal portion. The resin injection space surrounding at least the electric element is formed by mounting the electric element.
[0005]
In the above configuration, since the electric element is sealed with the resin by injecting the resin into the resin injection space, it takes a longer time than the configuration in which the insulating tape is wound around the connection portion between the electric element and the wiring. It is possible to maintain insulation. Furthermore, since the state of the resin injection into the resin injection space can be visually observed through the transparent cover, it is possible to prevent the occurrence of unsealed portions due to insufficient resin injection or uneven injection, and to prevent the resin sealing of the electric element from occurring. Certainty can be increased.
[0006]
It is preferable that two resin injection ports are formed in the transparent cover and the pedestal part, respectively, and the resin injection port is initially in a non-open state by a removable lid. Here, depending on the installation place or installation mode of the electric element arrangement box, there are cases where it is easier to inject the resin from the transparent cover side and cases where it is easier to inject the resin from the pedestal side. The resin can be injected by removing the lid on the easy side. In addition, since there are two resin inlets on each side, you can select the one that is easier to inject, and when injecting resin from one inlet, the other inlet functions as an air vent hole, so resin injection The resin can be smoothly injected into the space. Also, if the resin injection port on the pedestal portion is open at this time, the resin may leak out from the resin injection port, but since the resin is not opened at the lid portion, the resin is not opened. Will not occur. In some cases, it may be desirable to open one location on the transparent cover side and use it as an inlet, and also open one location on the pedestal side to provide an air vent hole. Is possible.
[0007]
The transparent cover has a wiring insertion hole for drawing out the wiring connected to the terminal from the inside of the transparent cover to the outside. The wiring insertion hole has an elasticity capable of filling a gap between the wiring and the wiring insertion hole. A member may be mounted. According to this, it is possible to draw out the wiring to the outside through the wiring insertion hole, prevent leakage of the resin through the wiring insertion hole, and suppress intrusion of water or the like.
[0008]
In the transparent cover, a wiring insertion hole for drawing out a wiring connected to the terminal from the inside of the transparent cover to the outside, and a partition part for separating a space on the wiring connection part side and a space on the electric element connection part side in the terminal. And an opening through which a screwdriver is inserted into the space on the wiring connection side. According to this, only the electric element connection part and the electric element are sealed with resin, and the wiring connection part of the terminal is not sealed with resin. Therefore, for example, it is easy to perform wiring again when the solar cell device is replaced. Moreover, since the wiring connection portion is surrounded by the transparent cover, it is possible to reliably prevent a situation in which a hand touches the wiring connection portion during work.
[0009]
It is preferable that a sign portion is formed on the transparent cover so that the polarity of the electric element connected to the terminal of the pedestal portion can be indicated. After the resin is injected, the electric elements become invisible.For example, after the electric element arrangement box is separated from the solar cell apparatus by exchanging the solar cell apparatus, what kind of polarity the electric elements are arranged in the box is determined. There is a possibility that a new solar cell device may be erroneously wired with the wrong polarity due to the inability to confirm. If the sign portion is formed on the transparent cover, it is possible to prevent such a problem from occurring.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an exploded perspective view showing an electric element arrangement box 10 according to this embodiment. The electric element arrangement box 10 includes a transparent cover 1 made of resin and a pedestal 2 made of resin. A pair of terminals 21 are arranged on the pedestal 2 at predetermined intervals in the longitudinal direction. The terminal 21 has a wiring connection portion 21a located on the upper surface of the pedestal portion 2 and an electric element connection portion 21b located slightly above the upper surface of the pedestal portion 2, and has a screw 22 on the wiring connection portion 21a side. It is fixed to the base 2. The lead of the bypass diode 4 is arranged on the electric element connecting portion 21b of the terminal 21, and the lead is connected and fixed by, for example, solder. When the electric element arrangement box 1 is arranged in a frame 32 of a solar cell window (skylight) 31 as shown in FIG. 3, for example, the power connection wiring 21a of the solar cell device 30 And the crossover wiring 6 is connected.
[0011]
Further, the pedestal portion 2 is formed with two resin injection ports 24, 24 that pass from the lower surface to the upper surface side. A lid that can be easily removed is provided at one end (upper surface or lower surface) of the resin injection port 24, and is initially in a non-open state. The structure of this lid is the same as the lid of the transparent cover 1. The lid of the transparent cover 1 will be described later. On two side surfaces parallel to the longitudinal direction of the pedestal portion 2, a total of four locking grooves 23 are formed two by two. The transparent cover 1 is fixed to the pedestal 2 by engaging the locking projections 13 of the transparent cover 1 with the locking grooves 23.
[0012]
The transparent cover 1 has a box shape, and a resin injection space for accommodating the bypass diode 4 and the terminal 21 is formed by mounting the transparent cover 1 on the pedestal portion 2 with the inside thereof facing the pedestal portion 2. Two resin inlets 12 are formed on the upper surface of the transparent cover 1. As shown in FIG. 2, the resin injection port 12 is initially in a non-open state by the lid 12a. The periphery of the lid 12a is formed to be thin, and the lid 12a is detached from the resin injection port 12 by giving a slight impact. Further, on two side surfaces orthogonal to the longitudinal direction of the transparent cover 1, wiring insertion holes 14 for drawing out the wirings 5, 6 connected to the terminals 21 from the resin injection space to the outside are formed. The rubber cap member 3 is attached to each wiring insertion hole 14. The rubber cap member 3 has a thick edge portion and a thin portion inside the edge portion, and a cut can be easily formed in the thin portion so that the wirings 5 and 6 can be pulled out through the cut. Has become.
[0013]
Further, a first marking portion 15 is formed on the upper surface of one end in the longitudinal direction of the transparent cover 1 so as to indicate the polarity of the bypass diode 4 connected to the terminal 21 of the pedestal portion 2. On the upper surface of the other end, a second marking portion 16 is formed. For example, the first marking portion 15 is formed by applying a red paint, the second marking portion 16 is formed by applying a blue paint, and the red side is plus and the blue side is minus. Even if the diode 4 is not visible, its polarity can be known. Of course, the polarity is not limited to such a color indication, but may be indicated by a symbol indication or the like.
[0014]
Next, the work of mounting the electric element arrangement box 10 will be exemplified. When the electric element arrangement box 10 is arranged in the window frame 32 of the solar cell window 31 as shown in FIG. 3, the power extraction wiring 5 and the crossover wiring 6 drawn from the solar cell device 30 are connected to the wiring connection portion 21a of the terminal 21. Connect to The bypass diode 4 is mounted on site or mounted in advance. Next, for example, when resin is injected from the transparent cover 1 side, the cover 12a is removed, the transparent cover 1 is mounted on the pedestal 2, and the rubber member 3 is mounted on the wiring insertion hole 14, and the rubber member 3 is mounted. The wirings 5 and 6 are drawn out from the cuts 3. Thereafter, an insulating resin is injected from the resin injection port 12 into the resin injection space. Then, the electric element arrangement box 10 is housed in the window frame 32 and the solar cell window 31 is assembled.
[0015]
Since the bypass diode 4 is sealed by the injected resin, it is possible to secure insulation for a long time as compared with a configuration in which an insulating tape is simply wound. Further, since the state of resin injection into the resin injection space can be visually observed through the transparent cover 1, the occurrence of unsealed portions due to insufficient resin injection or injection bias can be prevented, and the resin sealing of the bypass diode 4 can be prevented. The certainty of stopping can be increased.
[0016]
If it is easy to inject the resin from the pedestal 2 side, the lid of the resin inlet 24 may be removed to open the inlet. In addition, since there are two resin inlets on the transparent cover side and the pedestal side, respectively, of these two, the one that is easier to inject can be selected, and when injecting resin from one inlet, the other inlet is Since it functions as an air vent hole, the resin can be smoothly injected into the resin injection space. Also, if the resin injection port is open even on the side opposite to the injection side, the resin may leak out from the resin injection port, but on the opposite side, the injection port is closed by the lid. Since the state is maintained, the resin does not leak.
[0017]
In some cases, it may be desirable to open one location on the transparent cover 1 side to serve as an injection port and also open one location on the pedestal portion 2 side to provide an air vent hole. can do. In addition, since the rubber cap member 3 which is formed thin and can easily form a cut is attached to the wiring insertion hole 14 of the transparent cover 1, the wirings 5 and 6 are drawn out to the outside through the wiring insertion hole 14. And leakage of the resin through the wiring insertion hole 14 can be prevented.
[0018]
When the solar cell device 30 is replaced, the power supply wiring 5 is cut off to separate the solar cell device 30 from the electric element arrangement box 10, and the power supply wiring of a new solar cell device is taken out of the box 10. The above-mentioned cut-out power extraction wiring 5 is connected using a crimp terminal or the like. At this time, since the polarity mark of the bypass diode 4 in the box 10 is not visible due to the injected resin, there is a possibility that the wiring is wired with the opposite polarity. In this embodiment, since the marking portions 15 and 16 indicating the polarity of the bypass diode 4 are formed on the transparent cover 1, it is possible to prevent such a problem from occurring.
[0019]
(Embodiment 2)
Next, a second embodiment of the present invention will be described with reference to FIG. Note that members having the same functions as those in Embodiment 1 are denoted by the same reference numerals. As shown in FIG. 4, the length of the transparent cover 1 is shorter than the pedestal portion 2 and slightly longer than the interval between the electric element connection portions 21 b and 21 b in the terminals 21 and 21. Therefore, when the transparent cover 1 is mounted on the pedestal portion 2, the bypass diode 4 and the electric element connection portion 21b of the terminal 21 are located in the resin injection space, but the wiring connection portion 21a of the terminal 21 is located outside the resin injection space. Will be located. Further, a notch 19 corresponding to the thickness of the electric element connecting portion 21b is formed in the portion of the transparent cover 1 that straddles the electric element connecting portion 21b, so that the transparent cover 1 and the pedestal portion 2 are in close contact with each other. Is secured.
[0020]
In the above-mentioned configuration, while the electric element connection portion 21b of the bypass diode 4 and the terminal 21 can resin sealing, the wiring connection portions 21a of the terminals 21 can be left not let resin sealing, the attachment of the lines 5 and 6 In addition, since there is no restriction on removal and removal, replacement of the solar cell device and wiring is facilitated.
[0021]
(Embodiment 3)
Next, a third embodiment of the present invention will be described with reference to FIG. Note that members having the same functions as those in Embodiment 1 are denoted by the same reference numerals. As shown in FIG. 5, in the transparent cover 1, partition plates 18, 18 which form a resin injection space are formed. The interval between the partition plates 18, 18 is slightly longer than the interval between the electric element connecting portions 21b, 21b in the terminals 21, 21. Therefore, when the transparent cover 1 is mounted on the pedestal portion 2, the bypass diode 4 and the electric element connection portion 21b are located inside the resin injection space formed by the partition plates 18,18. On the other hand, the wiring connection portion 21 a is located outside the resin injection space, but is surrounded by the transparent cover 1. An opening 17 through which a screwdriver for turning the screw 22 is inserted is formed in an upper surface portion of the transparent cover 1 which is located above the wiring connection portion 21a. Further, a cutout portion corresponding to the thickness of the electric element connecting portion 21b is formed in the portion of the transparent cover 1 which straddles the electric element connecting portion 21b, and the close contact between the transparent cover 1 and the pedestal portion 2 is ensured. It has been secured.
[0022]
According to the above configuration, only the electric connection portion 21b of the bypass diode 4 and the terminal 21 is sealed with resin, and the wiring connection portion 21a of the terminal 21 is not sealed with resin. Is easy to redo. Moreover, since the wiring connection portion 21a of the terminal 21 is surrounded by the transparent cover 1, it is possible to reliably prevent a situation in which a hand touches the terminal 21 during work.
[0023]
Further, when the rubber cap member 3 is attached to the wiring insertion hole 14, it is possible to pull out the wirings 5 and 6 to the outside through the wiring insertion hole 14 and to suppress intrusion of water and the like through the wiring insertion hole 14. . A lid made of rubber or the like may be attached to the opening 17 through which the screwdriver for turning the screw 22 is inserted so as to prevent water or the like from entering.
[0024]
In the embodiment described above, the form in which the electric element arrangement box is arranged in the frame of the solar cell window is shown. However, the present invention is not limited to this, and the electric element arrangement box may be arranged in the frame of the solar cell door or the solar cell top light (skylight, lighting roof). Or may be provided on something other than these.
[0025]
【The invention's effect】
As described above, according to the present invention, since the electric element is sealed with the resin, the insulation for a long time is ensured as compared with a configuration in which the insulating tape is simply wound around the connection portion between the electric element and the wiring. It becomes possible. Furthermore, since the state of resin injection into the resin injection space can be visually observed through the transparent cover, the reliability of resin sealing of the electric element can be enhanced.
[0026]
If the resin injection port is formed in two places each on the transparent cover and the pedestal portion, and is initially in a non-open state with a lid portion that can be easily removed, from the side where injection is easier. Resin can be injected, and since the resin injection port is on each side, you can choose the one that is easier to inject, and when you inject resin from one of the two injection ports on the selected side, Since the injection port functions as an air vent hole, the resin can be smoothly injected into the resin injection space. In addition, the resin injection port on the side opposite to the side where the resin is injected is not opened at the lid, so that the resin does not leak.
[0027]
If the elastic member is attached to the wiring insertion hole of the transparent cover, the wiring is drawn out to the outside through the wiring insertion hole and the resin is prevented from leaking through the wiring insertion hole, or the wiring is formed through the wiring insertion hole. Can be prevented from being drawn out to the outside and intrusion of water or the like through the wiring insertion hole.
[0028]
If the transparent cover is provided with a partition, only the electric element connection portion of the terminal and the electric element are sealed with resin, and the wiring connection portion of the terminal is not sealed with resin. For example, the solar cell device is replaced. It is easy to redo the wiring at the time. In addition, since the wiring connection side of the terminal is surrounded by the transparent cover, it is possible to reliably prevent a situation in which a hand touches the terminal during operation.
[0029]
With the configuration in which the marking portion is formed on the transparent cover, it is possible to prevent such a problem that the wiring is provided with the opposite polarity when the solar cell device is replaced.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an electric element arrangement box according to Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view showing a resin injection port and a lid formed on a transparent cover of the electric element arrangement box of FIG.
FIG. 3 is a perspective view of a solar cell window in which the electric element arrangement box of FIG. 1 is incorporated.
FIG. 4 is an exploded perspective view showing an electric element arrangement box according to Embodiment 2 of the present invention.
FIG. 5 is an exploded perspective view showing an electric element arrangement box according to Embodiment 3 of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Transparent cover 2 Base part 3 Rubber cap member 4 Bypass diode 5 Power extraction wiring 6 Transition wiring 10 Electric element arrangement box 12 Resin injection hole 12a lid 14 Wiring insertion hole 15 First indicating part 16 Second indicating part 17 Opening 18 Partition plate 21 Terminal 21a Wiring connection 21b Electric element connection 22 Screw

Claims (8)

It is composed of a pedestal portion provided with a terminal for making connection between an electric element and a wiring, and a transparent cover attached to the pedestal portion. An electric element arrangement box, wherein a resin injection space surrounding the element is formed. The transparent cover and the pedestal portion each have two resin injection ports formed therein, and the resin injection port is initially in a non-open state by a removable lid. The electric element arrangement box according to claim 1. The transparent cover has a wiring insertion hole for drawing out the wiring connected to the terminal from the inside of the transparent cover to the outside. The wiring insertion hole has an elasticity capable of filling a gap between the wiring and the wiring insertion hole. 3. The electric element arrangement box according to claim 1, wherein a member is mounted. In the transparent cover, a wiring insertion hole for drawing out a wiring connected to the terminal from the inside of the transparent cover to the outside, and a partition part for separating a space on the wiring connection part side and a space on the electric element connection part side in the terminal. The electric element arrangement box according to claim 1, wherein an opening for inserting a screwdriver into the space on the wiring connection part side is formed. 5. The electric device according to claim 1, wherein a sign portion is formed on the transparent cover so as to indicate a polarity of an electric element connected to the terminal of the pedestal portion. 6. Element placement box. The electric element arrangement box according to any one of claims 1 to 5 , wherein the pedestal portion and the transparent cover are configured to be incorporated in a frame of a solar cell panel window . The electric element arrangement box according to any one of claims 1 to 5, wherein the pedestal portion and the transparent cover are configured to be incorporated in a solar cell door frame. The electric element arrangement box according to any one of claims 1 to 5, wherein the pedestal portion and the transparent cover are configured to be incorporated in a frame of a solar cell top light.

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