JPH11260438A - Terminal block device - Google Patents

Abstract

(57) [Problem] To provide a terminal block device having a function of optically displaying a state of a device connected to a terminal, in which a positional relationship between the terminal and a display unit is high, and light emitted from a light source is displayed. Avoid taking up space for the light guide section leading to the section. A display unit is provided on a cover that covers a terminal block main body. The display unit 17 is disposed immediately above each terminal 14 or in the vicinity thereof. LED 19 as a light source
Is guided to the display unit 17 by the pre-light guide member 22 provided in the extra space portion of the casing 11 and the light guide unit 23 provided in the cover 16.
The display section 17 is set to a light emitting state to display a state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a terminal block device,
In particular, the present invention relates to a device having a function of displaying a state of a device connected to a terminal.

[0002]

For example, a programmable controller has an input section, an operation section, and an output section, and the input section and the output section include external input devices such as sensors and switches, solenoid valves, electromagnetic switches or motors. And other external output devices via a terminal block.

[0003] The terminal block is provided with a large number of terminals for connecting external wiring extended from an external input / output device, and the terminals are mounted on a board on which electronic components constituting an input / output unit and a calculation unit are mounted. Are connected via internal wiring to the wiring pattern. Then, a signal from the external input device is input to the input unit via the terminal block, and the arithmetic unit performs an arithmetic operation based on the input signal and a preset sequence program, and stores data in the storage unit or outputs the data. Output a signal to the unit. The output unit operates based on a signal from the calculation unit, and drives and stops an external output device. As a result, the machinery and the like to be controlled are sequentially controlled according to a predetermined order.

[0004] Incidentally, the programmable controller has a function of displaying an input / output state.
This display configuration will be described with reference to FIG. 26. In the casing 1 of the programmable controller, a terminal block main body 3 in which a large number of terminals 2 are arranged in a line is provided on both upper right and left sides. The lid 4 of the casing 1
A display window 5 for displaying the operation state of the input / output device connected to each terminal 2 is collectively formed in a total of two rows on both the left and right sides. Yes, it is.

[0005] On a printed wiring board 6 located inside the casing 1, a large number of LEDs 8 corresponding to each display window 4 are mounted on both sides of a certain electronic component 7, and the light emitted by each LED 8 emits light. Each is guided to the display window 5 by a transparent light guide member 9. When the input / output device enters the operating state, the LED 8 corresponding to the input / output device entering the operating state emits light, and the light is guided to the display window 5 through the light guide member 9. As described above, when the input / output device enters the operation state, the display window corresponding to the terminal of the input / output device that has entered the operation state emits light, among the many display windows 5, so that the light-emitting display window 5 is displayed. From the viewpoint, it is possible to determine which input / output device is operating. 1a is a lower case of the casing 1.

However, in the above-described conventional display configuration, the LED 8 is disposed on the printed wiring board 6, and the light guide member 9 for guiding the light of the LED 8 to the display window 5 is disposed in the casing 1. Therefore, a space for arranging the LEDs 8 on the printed wiring board 6 must be ensured, and a space for arranging the light guide members 9 must also be ensured in the casing 1. Tends to be.

Further, since the display windows 5 are provided on the cover 4 of the casing 1 and are separated from the terminal block main bodies 3 on both the left and right sides of the casing 1, it is difficult to associate each display window 5 with each terminal 2 one-to-one. In order to determine the input / output device in the operating state, it is difficult to find the terminal 2 corresponding to the display window 5 from the display window 5 in the light emitting state.

The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the size of a terminal block device having a status display function and to position each display section and each terminal. It is an object of the present invention to provide a terminal block device capable of easily finding a terminal indicated by a display portion with high target relevance.

[0009]

In order to achieve the above object, a terminal block device according to the present invention comprises a terminal block body having a plurality of terminals for connecting external wiring, and an openable / closable cover for covering the terminals. A display unit provided on the cover corresponding to the plurality of terminals; a plurality of light sources for status display provided corresponding to the plurality of terminals; and a plurality of light sources provided on the cover. A plurality of light guide portions for guiding light emitted from each light source to the plurality of display portions, and the light emitted from the light source is guided to the display portion by the guide light portion so that the display portion emits light. (Claim 1).

[0010] According to this configuration, since the display section is provided on the cover, each display section can be provided so as to be associated with each terminal in position, for example, to be located directly above each terminal.
For this reason, each display portion is located in a one-to-one relationship with the terminal, and the terminal corresponding to the light-emitting display portion can be easily found. In addition, since the light from the light source is guided to the display unit by the light guide unit, the position where the light source is provided can be provided by using the extra space. Moreover, since the light guide unit is provided on the cover, the light guide unit is provided. Without the need for extra space for
The size can be reduced.

In this case, between the plurality of light sources and the cover, there can be provided a pre-light guide section for guiding light emitted from each light source to the plurality of light guide sections.
(Claim 2). If such a prelight guide portion is provided, even when the cover is opened, the end of the above-described prelight guide portion emits light. Terminals can be easily found.

Further, the plurality of terminals are arranged in a zigzag shape, and the light guides the light to a display portion having a long distance from the light source among the plurality of display portions provided in a zigzag shape corresponding to the plurality of terminals. The area of the light incident portion of the guide portion may be wider than that of the light guide portion that guides light to the display portion that is short in distance from the light source.

By arranging the terminals in a zigzag shape as described above, the size of the terminal block main body can be reduced as compared with the number of terminals. In addition, since the area of the light incident portion of the light guide portion that guides light to the display portion that is long from the light source is large, the brightness of the display portion that is long from the light source is the same as that of the display portion that is short from the light source. Then, light can be emitted.

Further, in the present invention, light-shielding masking can be applied to the surface of the cover except for the plurality of display portions. Light incident on the light guide portion of the cover and guided to the display portion may leak from the light guide on the way. If the surface of the cover is masked, the entire cover is illuminated by light leaking from the light guide portion, and it is possible to prevent the relative brightness of the display portion from being reduced.

Further, the light source corresponding to each of the plurality of terminals may be constituted by a plurality of light-emitting elements having different emission colors, and the light-emitting elements may selectively emit light according to a state to be displayed. (Claim 5). With this configuration, one display unit can emit light in a plurality of different colors, and can display various states.

The above terminal block device can be provided in a programmable controller. Recent programmable controllers are required to be made smaller with the miniaturization of electronic components typified by ICs. However, when the above-mentioned terminal block device is used as a programmable controller, the size of the programmable controller becomes smaller. Can handle the demands.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a programmable controller will be described below. First,
1 to 7 show a first embodiment of the present invention. FIG. 7 shows an overall configuration of the programmable controller, which is configured by attaching a lid 12 to an upper part of a rectangular casing 11. Although not shown, a printed wiring board is arranged inside the casing 11, and a large number of electronic components constituting an input unit, a calculation unit, an output unit, and the like are mounted on the printed wiring board.

A terminal block device 13 as shown in FIGS. 1 and 6 is provided on the left and right sides of the upper portion of the casing 11. 1, 6, and 7, only one terminal block device 13 is shown. This terminal block device 13
Is mainly composed of a terminal block main body 15 in which a large number of terminals 14 are arranged in a line and fixedly arranged. The terminal block main body 15 has a casing 1 in which a terminal arrangement surface is exposed to the outside.
1 is attached to the upper part. External wirings (not shown) connected to external input / output devices are connected to the terminals 14 of the terminal block main body 15, and the input / output devices are connected to the input / output units in the casing 11 via the terminals 14. Is to be connected to.

The terminal block device 13 includes a terminal block main body 1.
A cover 16 is provided to cover the terminal arrangement surface 5 from above. The cover 16 is attached to the lid 12 so as to be vertically rotatable via a support shaft 16a (see FIG. 3), and extends upward from a closed position in which the terminal 14 on the terminal arrangement surface is covered to an open position. When the terminal 14 is rotated, the terminal arrangement surface is exposed to the outside, so that the terminal 14 can be connected to the external wiring.

The terminal block device 13 has a function of displaying the operation state of the input / output device connected to the terminal 14. This display function is achieved by providing a display unit 17 corresponding to each terminal 14 on a one-to-one basis, and causing the display unit 17 corresponding to the input / output device in the operating state to emit light.

That is, the display portions 17 corresponding to the terminals 14 in a one-to-one manner are provided in a line on the cover 16, and as shown in FIGS.
Are disposed so as to be located immediately above each terminal 14 in the closed state of the cover 16. In this embodiment, the cover 16 is formed of a light-transmitting material, for example, a transparent plastic material.
Masking having a light-shielding property on the whole except the display unit 17, for example, a portion corresponding to the display unit 17 is made transparent, and a black film 18 is attached to the other portions. In FIG. 5, the black portion of the film 18 is shown with diagonal lines.

A light emitting diode (hereinafter, referred to as an LED) 19 is employed as a light source for causing each of the display sections 17 to emit light, and these LEDs 19 are mounted on a printed wiring board 20 vertically arranged in the casing 11 by a terminal block main body. It is arranged so as to be lined up directly below the partition wall portion 12a at the rear of the 15 arrangement portions. The partition wall portion 12 in the casing 11
a, a large number of through holes 21 are formed immediately above each LED 19 and immediately after each terminal 14, and a transparent plastic as a prelight guide portion is formed in each through hole 21. Prelight guide member 22 made of material
Is fitted. Therefore, when the LED 19 emits light, the light enters the prelight guide member 22, and is transmitted through the prelight guide member 22 while being totally reflected by the side surface of the prelight guide member 22, and is transmitted from the upper end surface to the outside. It is radiated to.

The cover 16 is formed with a number of light guide portions 23 extending from the rear end surface (left end surface in FIG. 1) of the cover 16 to each display portion 17. The light guide portion 23 is formed so that the light guide portion 23 remains in a convex shape by forming a groove 24 in the cover 16 so as to surround the light guide portion 23 as shown in FIGS. It was done. The rear end of the light guide portion 23 is formed as a 45-degree slope with the upper end surface of the pre-light guide member 22. For this reason, the light refracted by the upper end inclined surface 22 a of the prelight guide member 22 enters the light guide member 23 from the rear end inclined surface 23 a, and is totally reflected by the side surface of the light guide portion 23 while the light guide is The inside of the portion 23 moves toward the front end surface.

The front end surface of the light guide portion 23 is an inclined surface which is upward at an angle of 45 degrees, and the front end inclined surface 23b is formed in a satin-like shape, that is, in a fine uneven shape for irregularly reflecting. Preferably, the front end inclined surface 23b is made silver to easily reflect light upward. Therefore, the light guided to the front end inclined surface 23b of the light guide portion 23 is irregularly reflected by the inclined surface 23b and emitted to the outside from the display unit 17, and the reflected light from the front end inclined surface 23b. This causes the display unit 17 to emit light.

In order to fully reflect the light incident on the prelight guide member 22 and the light guide portion 23 as much as possible and to increase the amount of light emitted from the upper inclined surface 21a and the front inclined surface 23b, the prelight guide members 22 are used. And the inner surface of the through hole 21 and the side surface of the light guide portion 23 are mirror-finished.

Next, the operation of the above configuration will be described. When the input / output device is in the operating state, the arithmetic unit executes an operation of energizing the LED 19 corresponding to the input / output device in the operating state to emit light. The light emitted by this LED 19 is
The transmitted light incident on the prelight guide member 22 and exiting from the upper end inclined surface 22a of the prelight guide member 22 is
The light enters the light guide portion 23 of the cover 16, is finally reflected by the front inclined surface 23 b of the light guide portion 23, and is emitted from the display unit 17 to the outside.

For this reason, the display unit 17 corresponding to the terminal 14 connected to the input / output device in the operating state is brightly illuminated and becomes in the light emitting state. Then, by finding the terminal 14 corresponding to the display unit 17 in the light emitting state, it is possible to know which input / output device is in the operating state. LE
When the cover 16 is opened while the light D 19 is emitting light, the transmitted light of the prelight guide member 22 does not enter the light guide portion 23, so that the operation display cannot be performed by the display portion 17 of the cover 16.

However, when the cover 16 is opened, FIG.
As shown in (2), the upper end inclined surface 22a of the prelight guide member 22 can be seen. Therefore, if the prelight guide member 22 that is shining brightly by the transmitted light is found, the prelight guide member 22 that is in the light emitting state is located immediately. Since the previous terminal 14 is a terminal connected to the input / output device in the operating state, the input / output device in the operating state can be easily identified without using the display unit 17.

As described above, according to the present embodiment, the display unit 17
Are provided on the cover 16 so that each display section 17 is connected to each terminal 14.
The display unit 17 can be provided so as to be associated with the terminal 14 in a position, for example, directly above the terminal 14 or in the vicinity of each terminal 14. For this reason, the display unit 1 is switched from the light-emitting display unit 17 to the display unit 1.
The terminal 14 corresponding to the terminal 7 can be easily found, and the input / output device in the operating state can be easily known from the terminal 14.

In addition, since the light emitted from the LED 19 is guided to the display section 17 of the cover 16 by the prelight guide member 22 and the light guide section 23, LE
The D19 and the pre-light guide member 22 can be arranged, for example, using an extra space existing behind the arrangement portion of the terminal block main body 15, and the light guide portion 23 can be provided on the cover 16. For this reason, it is not necessary to provide the LED 19 on the printed wiring board arranged in the casing 11 or to provide the pre-light guide member 22 and the light guide portion 23 at the center of the casing 11. The overall size can be reduced.

In this embodiment, since the black film 18 having a light-shielding property is attached to the cover 16 except for the display section 17, light from the LED 19 is transmitted to the light guide section 23.
Even if the light leaks from the light guide portion 23 while passing through the inside, there is no danger that the entire cover 16 becomes bright and the brightness of the display portion 17 is relatively lowered, and the display portion 17 does not.
Light emission and non-light emission can be easily determined.

FIGS. 8 to 12 show a second embodiment of the present invention. The difference from the first embodiment is that terminals are provided in a zigzag shape on a terminal block main body. That is, the terminal block main body 25 has terminal arrangement surfaces 25a and 25b in two upper and lower stages. The terminals 14 are arranged in a line on each of the terminal arrangement surfaces 25a and 25b.
And the lower terminal 14 are disposed so as to be located between two terminals adjacent to each other on the other side. As a result, the terminal 14 is disposed in a zigzag shape as a whole of the terminal block main body 14. It is in a state of being left.

A large number of display portions 14 are provided in the cover 16 in a zigzag manner so as to be located immediately above the terminals 14 in both upper and lower stages, and the light guide portions 26 having different lengths are used. 27 are formed. In this case, the front end inclined surfaces 26b, 27b of the respective light guide portions 26, 27
Are the same, but the area of the rear end inclined surfaces 26a and 27a for receiving the transmitted light from the prelight guide member 22 is larger in the long side light guide section 26 than in the short side light guide section 27. Widely set.

Accordingly, the cross-sectional area of the pre-light guide member 22 is set to be wider for the light guide portion 26 on the long side than for the light guide portion 27 on the short side. As described above, the light guide portion 26 on the long side is smaller than the light guide portion 27 on the short side.
Even if there is a lot of light leakage before reaching the front end inclined surfaces 26b, 27b, the front end inclined surface 26b
The amounts of light reflected by b and 27b can be made substantially the same, so that there is no difference in light intensity of the display unit 14. Since the area of the rear end inclined surface 26a is increased, the width of the rear end of the light guide portion 26 is reduced to the front end inclined surface 2a.
6b, the light guide portion 26 is formed in a tapered shape gradually narrowing from the rear end to the front end.

When the terminals 14 are arranged in a zigzag shape, particularly when the terminals 14 are arranged in three or more rows, the effect of providing the display section 17 on the cover 16 is remarkable. This is shown in FIG.
25, the display unit 17 is provided on the terminal block main body 25. In FIG. 25, the display unit 17 is provided at the rear of each terminal 14 on the terminal block main body 28. The light emitted from the LED 19 provided at the bottom of the display unit 17 is transmitted to the
To lead to.

However, since the external wiring 30 extended from the external input / output device is connected to each terminal 14,
The external wiring 30 may pass above the display unit 17. In this state, the display unit 17 is hidden by the external wiring 30 and becomes invisible. When the display unit 17 is provided on the terminal block main body 28, the above-described inconvenience occurs. However, in the present invention in which the display unit 17 is provided in the cover 16, such inconvenience does not occur.

FIGS. 13 to 17 show third to seventh embodiments of the present invention. These embodiments relate to a prelight guide member provided on the casing 11 side, and
2 shows a configuration different from each of the embodiments. First, in the third embodiment shown in FIG. 13, the upper end surface of the prelight guide member 31 is not an inclined surface but is an upward flat surface. In this device, the light emitted from the LED 19 enters the prelight guide member 31 from the lower end surface thereof, passes through the prelight guide member 31 and is emitted upward from the flat upper end surface thereof. The light is incident on the light guide.

The fourth to seventh embodiments of FIGS. 14 to 17 deal with the case where the LED 19 is mounted on the printed wiring board 20 so as to emit light forward. Prelight guide member 3 of the fourth embodiment
2 is substantially L-shaped, and the outer surface of the bent portion is formed as a 45-degree inclined surface 32a. In this configuration, LE
The light emitted forward from D19 is incident on the prelight guide member 32, is reflected on the inclined surface 32a, is emitted upward from the flat upper end surface 32b, and is incident on the light guide portion of the cover 16.

The pre-light guide member 33 of the fifth embodiment shown in FIG. 15 has an L-shape as in the above-described fourth embodiment, and the outer surface and the upper end surface of the bent portion are inclined at 45 degrees.
3b. In this configuration, the LED 19
The light emitted forward from the
And is reflected by the inclined surface 33a of the bent portion, radiated obliquely upward from the upper end inclined surface 33b, and
Incident on the light guide section of

The prelight guide member 34 of the sixth embodiment shown in FIG. 16 is formed in a horizontal bar shape, and its front end face is formed as a 45-degree upward inclined surface 34a. In this case, the light emitted forward from the LED 19 and incident on the prelight guide member 34 is refracted by the front end inclined surface 34 a and transmitted obliquely upward, and is incident on the light guide portion of the cover 16. The prelight guide member 35 of the seventh embodiment shown in FIG. 17 is a bar-shaped member arranged horizontally like the above-described sixth embodiment, and the front end face is formed as a 45-degree downward inclined surface 35a. I have. In this case, LED 19
The light emitted from the front and incident on the prelight guide member 35 is reflected upward by the front end inclined surface 35a, transmitted upward from the upper surface, and incident on the light guide portion of the cover 16.

The prelight guide members 31 to 35 as in the third to seventh embodiments are selected according to the direction of light emission of the LED 19, the internal structure of the casing 11, the form of the light guide portion of the cover 16, and the like. You can do it.

FIGS. 18 to 22 show the eighth to twelfth embodiments of the present invention. These embodiments relate to the light guide portion provided on the cover 16 side and each of the first and second embodiments. 2 shows a configuration different from that shown in FIG. Eighth of FIG.
In the embodiment, the front end face of the light guide portion 36 is an obliquely upward 45-degree inclined surface 36a. In this case, the groove 37 is opened upward in order to extract a mold for forming the inclined surface 36 a on the upper surface, and the opening surface of the groove 37 is covered by the transparent portion of the film 18.
In this configuration, light incident on the light guide portion 36 is refracted by the front end inclined surface 36a and transmitted obliquely upward. Then, the transmitted light becomes light for displaying the operation state of the input / output device. Therefore, in the present embodiment, the inclined surface 36
a, or from the inclined surface 36 a to the transparent portion of the film 18 closing the opening surface of the groove 37 functions as the display unit 17. Note that the transparent portion of the film 18 that blocks the opening surface of the groove 37 may be changed to a translucent colored portion.

The ninth embodiment of FIG. 19 to the eleventh embodiment of FIG. 21 illustrate the cross-sectional shape of the groove 39 for forming the light guide portion 38, and the ninth embodiment of FIG. The tenth embodiment shown in FIG. 20 has a trapezoidal shape that narrows downward, and the eleventh embodiment shown in FIG. 21 has a shape in which both left and right inner surfaces are arc-shaped.

In the twelfth embodiment shown in FIG. 22, the rear end portion of the light guide portion 40 is cut out to form a rear end surface with a 45-degree downward inclined surface 40a.
This is the same as the embodiment. For the light guide portion 40, for example, the pre-light guide member 33 of the fifth embodiment shown in FIG. 15 is used, and the light radiated upward from the pre-light guide member 33 is made incident on the rear end inclined surface 40a. hand,
It is configured to be refracted by the front inclined surface 40b and radiated upward.

13 and 14 of FIGS. 23 and 24
In each of the embodiments, the light guide portion of the cover 16 is constituted by a space. That is, in the thirteenth embodiment of FIG. 23, the light guide groove 41 as a light guide portion is formed in the cover 16, the rear end face of the light guide groove 41 is a 45-degree downward inclined surface 41a, and the front end face is 45-degree upward. Inclined surface 41b. And the front end inclined surface 41
In order to form b, the upper part thereof is formed as a cutout hole 42 opened on the upper surface of the cover 16.

For the light guide groove 41, for example, the pre-light guide member 31 of the third embodiment shown in FIG. 13 is used, and the light radiated upward from the pre-light guide member 31 is transmitted to the rear end inclined surface 41a. The light is reflected forward and then reflected upward on the front inclined surface 41b to be displayed on the display unit 17.

The fourteenth embodiment shown in FIG.
As in the third embodiment, a light guide groove 43 as a light guide portion is formed in the cover 16, and the rear end face and the front end face of the light guide groove 43 are inclined surfaces 43a and 43b facing downward by 45 degrees. In this case, the light reflected by the rear end inclined surface 43a is refracted by the front end inclined surface 43b, enters the cover 16 obliquely upward, and is emitted from the display unit 17. Note that the light guide grooves 41 and 43 in FIGS. 23 and 24 may be configured to prevent light leakage by attaching a seal 44 on the lower surface of the cover 16 with instructions for use. The light guide portions 36, 40, 41, and 43 as described above are selected according to the surrounding configuration and used in combination with the prelight guide member.

The present invention is not limited to the embodiment described above and shown in the drawings, but can be extended or modified as follows. Light guide part 2 with different length
6 and 27, the rear end inclined surfaces 26a and 27a have the same area, and the illuminance of the LED 19 of the long light guide portion 26 is
You may make it higher than LED19 of the short light guide part 27. FIG. The light guide provided on the cover 16 may be separate from the cover 16. The present invention is not limited to the terminal block device of the programmable controller.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a partial bottom view of a cover.

FIG. 4 is a sectional view taken along the line II in FIG. 3;

FIG. 5 is a partial plan view of the terminal block device.

FIG. 6 is a partial perspective view of the terminal block device shown with a cover removed.

FIG. 7 is a perspective view of a programmable controller.

FIG. 8 is a view corresponding to FIG. 1 showing a second embodiment of the present invention.

FIG. 9 is a diagram corresponding to FIG. 3;

FIG. 10 is a diagram corresponding to FIG. 5;

FIG. 11 is a sectional view taken along the line wo in FIG. 9;

FIG. 12 is a sectional view taken along the line AA of FIG. 9;

FIG. 13 is a side view of a prelight guide member according to a third embodiment of the present invention.

FIG. 14 is a view corresponding to FIG. 13 showing a fourth embodiment of the present invention.

FIG. 15 is a view corresponding to FIG. 13 showing a fifth embodiment of the present invention.

FIG. 16 is a view corresponding to FIG. 13 showing a sixth embodiment of the present invention.

FIG. 17 is a view corresponding to FIG. 13 showing a seventh embodiment of the present invention.

FIG. 18 is a sectional view of a light guide portion of a cover according to an eighth embodiment of the present invention.

FIG. 19 is a view corresponding to FIG. 4, showing a ninth embodiment of the present invention;

FIG. 20 is a view corresponding to FIG. 4, showing a tenth embodiment of the present invention;

FIG. 21 is a view corresponding to FIG. 4, showing an eleventh embodiment of the present invention;

FIG. 22 is a view corresponding to FIG. 18 showing a twelfth embodiment of the present invention.

FIG. 23 is a view corresponding to FIG. 18 showing a thirteenth embodiment of the present invention.

FIG. 24 is a view corresponding to FIG. 18 showing a fourteenth embodiment of the present invention.

FIGS. 25A and 25B show another display configuration exemplified for comparison with the present invention, wherein FIG. 25A is a plan view and FIG.

FIG. 26 is an exploded perspective view showing a conventional programmable controller.

[Explanation of symbols]

In the figure, 11 is a case, 12 is a lid, 13 is a terminal block device, 1
4 is a terminal, 15 is a terminal block main body, 16 is a cover, 17 is a display unit, 18 is a film (light shielding masking), and 19 is L
ED (light source), 22 is a pre-light guide member (pre-light guide portion), 23 is a light guide portion, 25 is a terminal block main body, 26 and 27 are light guide portions, and 31 to 35 are pre-light guide members (pre-light guide members). Parts), 40, 41,
43 is a light guide part.

Claims (6)

[Claims] 1. A terminal block main body having a plurality of terminals for connecting external wiring, an openable / closable cover covering the terminals, a display unit provided on the cover corresponding to each of the plurality of terminals, A plurality of light sources for status display provided corresponding to the plurality of terminals; and a plurality of light guide portions provided on the cover and guiding light emitted by the plurality of light sources to the plurality of display portions. A terminal block device comprising: a light source for guiding the light emitted from the light source to the display unit by the guide light unit so that the display unit emits light. 2. A pre-light guide section for guiding light emitted from each light source to each of said plurality of light guide sections is provided between each of said plurality of light sources and said cover. The terminal block device as described. 3. The display device according to claim 2, wherein the plurality of terminals are arranged in a zigzag shape, and the light is guided to a display portion having a long distance from the light source among the plurality of display portions provided in a zigzag shape. 3. The terminal block device according to claim 1, wherein an area of a light incident portion of the light guide portion is wider than that of the light guide portion that guides light to a display portion having a short distance from the light source. 4. The terminal block device according to claim 1, wherein a light-shielding masking is applied to a surface of the cover except for the plurality of display portions. 5. The light source according to claim 1, wherein the light source includes a plurality of light emitting elements having different emission colors, and the light sources are configured to selectively emit light according to a state to be displayed. The terminal block device according to any one of 1 to 4. 6. A terminal block device provided in a programmable controller.
The terminal block device according to any one of the above.