JPH02776Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an indicator light using a light emitting diode (hereinafter referred to as LED).

In a traffic management system that centrally controls train operations at a command center, route maps, train location display windows,
It is equipped with a train operation display panel with a window for displaying signal information, etc., and a display device displays the operation status of the train so that it can be seen at a glance. One of such train operation display boards is a mosaic display board, as shown in FIG. 11, which is constructed by arranging a large number of mosaic panel units (hereinafter referred to as units) mp in rows and columns. With this mosaic display panel, for example, when there is a change in the train track, there is no need to replace the entire display panel; just change the unit corresponding to the changed part to the unit that matches the changed display format. It has the advantage that it only requires

By the way, the above-mentioned train location display window changes the display color depending on the track status, for example, yellow when entry is allowed, red when the train has entered, etc., and the above-mentioned signal display content display window So,
It is equipped with indicator lights that emit light in different colors such as green, yellow, and red, and the colors are changed depending on the train control conditions. However, all conventional indicator lights, such as light bulbs or LEDs, emit only one color, so in order to emit light in multiple colors, the same number of indicator lights must be arranged on a flat surface. Therefore, there are disadvantages such as requiring a large area for display and complicating the structure and wiring for holding the indicator light.

In addition, indicator lights that use light bulbs have a high heat generation temperature, so there is a high failure rate due to core breakage, and there are also problems with the heat resistance of mosaic panels, and unless expensive materials with excellent heat resistance are used, the lifespan is short. There is a drawback.

As something that can eliminate the drawbacks of the above light bulbs,
Single-color LED indicator lights are known that have built-in resistors, diodes, etc. for LED operation and protection, but as shown in Figure 1, this is done by connecting a printed board 2 to the LED 1, and connecting the LEDs on both sides of the printed board. To,
It is equipped with a positive electrode 3 and a negative electrode 4,
For example, since the two electrodes 5 and 6 are connected by fitting into sockets 7 formed by curved upper portions, the structure of the mosaic panel becomes complicated and expensive.

In view of the above points, this idea uses LED indicator lights,
A printed board including a light emitting part having an LED, a circuit component for operating and protecting the LED, a terminal block having an electrode connected to the circuit of the printed board and extending to the outside, and having a cylindrical shape and , is provided with a slit that provides elasticity in the radial direction, and both ends thereof are fitted into the light emitting part and the terminal block and fixed by a diameter reducing force, surrounding the printed board, and a common part of the circuit of the printed board. By connecting the metal case to the electrode part and fitting into the hole provided in the common electrode of the indicator lamp holder, this LED indicator lamp can be firmly assembled and can emit multicolor light with a minimum display area. The present invention aims to make it possible to significantly simplify the structure for holding indicator lights and the structure for electrical connection of a mosaic panel.

Next, as an example of this invention, an embodiment applied to an indicator light for a mosaic display panel will be described based on the drawings from FIG. 2 onwards.

As shown in Figure 2, the LED indicator light according to this invention has a light emitting part a that has multiple LEDs built in and can emit light in multiple colors, and a light emitting part a that allows each of the LEDs to emit light.
A printed board b equipped with circuit components for protecting the LED, a terminal block c connected to the printed board and having electrode terminals 24 and 25 of the same number as the number of colors emitted by the light emitting part, and It consists of a metal case d that covers the outer periphery up to the terminal block and also serves as a common electrode connected to the common electrode section of the printed board.

The light emitting unit a includes a plurality of LEDs emitting light of different colors, as shown in Fig. 3 for a two-color light emitting type as an example.
11 and 12 connected in parallel are housed in a cylindrical container 13, molded with a plastic material or other filler 14 with high light diffusivity, and a common positive terminal 15 and a negative terminal are connected from the bottom of the container. 16 and 17 are arranged protrudingly. LED11,
When this LED indicator lamp 12 is used for a train operation display board, for example, it emits light in a distinguishable color such as red or green. By increasing the number of LEDs, it is possible to emit light in three or more colors, and by emitting light in two or three colors simultaneously, it is possible to emit light in many composite colors.

In Figure 3, LED 11 emits red light,
If the LED 12 emits green light,
If the voltage and current applied to each LED are equal,
Since the brightness of the red light emitted from the LED 11 is much brighter than the brightness of the green light emitted from the LED 12, when red and green light are emitted from the same point at different times, a difference in brightness occurs, which is not desirable. Therefore, in this embodiment, as shown in FIG.
11, 2 green LEDs 12a, 12
By connecting them in series, the difference in brightness during lighting can be adjusted.

In the light emitting part a, the LEDs 15, 16, and 17 are fixed to required parts of the printed circuit board of the printed board b by soldering or the like at the upper end of the printed board b. negative terminals 16, 17 and common terminal 1
5 are placed on two parallel planes having an interval approximately equal to the thickness of the printed board b, and the terminals 16, 17, and 15 are arranged to straddle the upper edge of the printed board b. By soldering to the printed circuit, the light emitting section a can be firmly attached to the printed circuit board b. Furthermore, by extending another terminal 18 from between the two green LEDs 12a and 12b and positioning it on the same plane as the common terminal 15,
The connection between the light emitting part a and the printed board b is made more reliable and easy to make. Furthermore, when circuit components are mounted on both sides of the printed board, there is an advantage that through-holes and the like are not required for connection with LED terminals.

On the printed board b, the respective LEDs 11, 12a,
A circuit to which circuit components such as a chip resistor 19 and a chip diode 20 are connected is provided for lighting the light 12b, and each of the terminals 15 to 18 is connected to a part of the circuit by soldering or the like.

The terminal block c has a base portion 21 made of an insulating material such as plastic, and connection terminals 22 and 23 protruding from the upper surface of the base portion and corresponding to the negative terminals 16 and 17, respectively. The base part 2 is provided with electrodes 24 and 25 that penetrate through the inside and protrude downward from the base part, and the two electrodes with connection terminals are used as inserts.
A terminal block c is formed by molding 1.

Then, by inserting the lower edge of the printed board b between the connecting terminals 22 and 23 and connecting the connecting terminal to a part of the circuit of the printed board by soldering, etc., the light emitting part a and the printed board b are connected. As in the case of , the printed board b and the terminal block c are firmly fixed to form an intermediate product as shown in FIG.

The metal case d is formed into a substantially cylindrical shape, and is provided with a slit 26 extending in the axial direction on one side, so that the diameter can be easily expanded by elastic force.
In this way, this metal case d is moved in the axial direction with its diameter expanded, and this metal case is attached to the lower part of the light emitting part a, the printed board b, and the outer periphery of the upper part of the terminal block c, as shown in FIG. Cover as shown.
Lower part of the container 13 of the light emitting part and base part 2 of the terminal block
Fitting portions 27 and 28 are formed on the upper part of the metal case 27 and 28 with a smaller diameter so that the outer diameter is equal to the inner diameter of the metal case d in its natural state without any external force being applied. When it moves in the direction and reaches the predetermined position to cover the printed board, the diameter narrows,
It is fitted into and fixed to the fitting parts 27 and 28. Since the metal case is formed into a cylindrical shape, it protects the components on the printed board.

The metal case d has an opening 29 in the middle of the slit 26, and a connecting piece 30 protruding from the opening surface, and when placed over a printed board, the connecting piece is provided on the printed board b. By connecting the connecting piece 30 and the common electrode part 31 by soldering, the electrical and physical connections from the light emitting part a to the metal case d are The connection of the targets is completed, and the metal case also serves as a common electrode. FIG. 6 shows an example of the LED indicator light A according to this invention manufactured in this manner.

B ₁ in FIG. 7 is an indicator light holder which is a component of the mosaic panel, and this holder B ₁ is
For example, a common electrode 33 is attached to the upper surface of a case 32 made of an insulating material such as plastic, and the case 32 is open at the upper surface and has an inner diameter approximately equal to the outer diameter of the base 21 of the terminal block c. Each insertion part has a hole 3 for penetrating the electrodes 24 and 25 of the terminal block and protruding downward from the case 32.
5 and 36 are provided. Further, the common electrode 33 has a flat plate shape, is slightly spaced upward from the upper surface of the case 32, and has a number of holes 37 having diameters approximately equal to the inner diameter of the insertion portion 34, respectively, directly above each insertion portion. have.

In this way, the above-mentioned LED indicator light A is inserted into the holder B ₁ , as shown in FIG. , 36 and protrudes from the bottom surface of the case. In this case, it is necessary that the outer surface of the metal case d be in pressure contact with the common electrode. In order to ensure good contact, in the illustrated embodiment this is achieved by cutting out a portion of the metal case to form a tongue 38.
When the LED indicator light A is inserted into the holder _B1 , the tongue piece 38 is brought into pressure contact with the common electrode 33 by the action of a spring, so that a good electrical contact state can be obtained.

In addition, in order to securely attach the LED indicator light inserted into the holder B ₁ , as an example, the electrodes 24 and 25 are formed in a flat strip shape, and the holes 35 and 3 of the holder are
By making the cross-sectional shape of electrodes 6 similar to the cross-sectional shape of the electrodes, the electrodes 24 and 25 protruding from the other side of the panel case are inserted through the holes 35 and 36, and are twisted at an angle of, for example, 45 degrees around the axis to form an LED display. Light A is fixed to holder _B1 . This prevents the LED indicator light from being moved upward by the springiness of the tongue piece 38, thereby preventing electrical contact failure.

As shown in FIG. 9, an upper case _B2 is attached to the holder _B1 . The upper case B ₂ can be defined by a removable partition plate 40 into the same number of vertically opening chambers as the holes 37 of the holder, and the holder B ₁ is fitted into and connected to the recess on the lower surface of the upper case. LED indicator light A protruding from the top of the holder
is stored in one of the chambers of the upper case. A lens holder B ₃ is detachably attached to the upper surface of the upper case B ₂ by a locking metal fitting 41 having spring properties. The lens holder is constructed by mounting a lens 43 on a through-hole window 42 provided in a position corresponding to the chamber housing the indicator light A in the upper case. Additionally, there is a display panel on the top of this lens holder _B3 .
B ₄ connects the springy protrusion 44 to the lens holder.
It is detachably attached by fitting into the notch 45 of _B3 . The display panel B ₄ has a display pattern drawn on its surface corresponding to the display form of the portion corresponding to the display panel DP in FIG. 11, and a display window 46 is provided in a portion corresponding to the lens of the lens holder B ₃ . There is.

The indicator light holder B ₁ , upper case B ₂ , lens holder B ₃ and display panel B ₄ form a single mosaic panel unit mp as shown in FIG.
A large number of mosaic panel units, each corresponding to a desired display format, are arranged vertically and horizontally in a lattice-like frame C to construct a mosaic display panel DP as shown in FIG. 11. It is something that exists.

As an example, the mosaic panel unit is provided with locking legs 47 and locking protrusions 48 having spring properties on opposite sides of the upper case, which are fitted from above the frame C and are locked with the locking legs 47. The frame is held and fixed by the protrusions 48.

In addition, in addition to the LED indicator light, a display control switch and the like can be attached to the indicator light holder _B1 of the mosaic panel unit mp using the same metal case and electrodes.

Each LED indicator light emits light in a predetermined different color by being given a signal to the electrodes 24 and 25 under predetermined conditions, either alternatively or simultaneously.

This invention is characterized by the connection relationship between the metal case, the light emitting part and the terminal block, and the attachment relationship between the metal case and the indicator light holder, so even if the light emission part has only one LED, this invention can be used. This applies.

The LED indicator light according to this invention can be used not only as the mosaic panel display panel of the above embodiment, but also as a pilot lamp to indicate the working status of other machines and equipment.

As mentioned above, in the LED indicator light according to this invention, the light emitting part, the printed board, and the terminal block are fixed between each other by soldering the terminals and circuits, and the metal case has a cylindrical shape. The metal case has great strength and radial elasticity due to the slits, and both ends of the metal case are fitted to the light emitting part and terminal block, fixed by diameter reduction force, and surround the printed board. Therefore, the metal case increases the strength of the connection between the light emitting part, terminal block, and printed circuit board, making the entire LED indicator lamp extremely robust.
Therefore, the handling of this LED indicator light is easy,
Moreover, the printed circuit is well protected.

In addition, the metal case also serves as an electrode, and electrical connection can be made by fitting it into the hole provided in the common electrode of the indicator light holder, so this LED
Indicator lights can be used by attaching and detaching them to mosaic panel units, other display devices, equipment, etc. Moreover, they can be electrically connected simply by fitting the metal case and wiring to the electrodes of the terminal block. Therefore, the electrical connection structure of the device used can be significantly simplified.

In addition, the light emitting part has multiple light emitting parts with different colors.
When equipped with an LED, it is possible to display multiple colors of light with a minimum display area.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional monochrome LED indicator light and its holder. Figure 2 and the following drawings show one embodiment of this invention.
The figure is an exploded perspective view, Figures 3 and 4 are circuit diagrams showing an example of the circuit of the light emitting part, Figure 5 is a perspective view of one stage of assembly, and Figure 6 is the completed LED.
A perspective view of the indicator light, Fig. 7 is a perspective view mainly showing the holder, Fig. 8 is a sectional view of the LED indicator light installed, Fig. 9 is an exploded perspective view of the mosaic panel unit, and Fig. 10 is the mosaic panel. FIG. 11 is a perspective view showing an example of the unit, and FIG. 11 is a front view of a part of the mosaic display panel. a... Light emitting part, b... Printed board, c... Terminal block, d... Metal case, 24, 25... Electrode, A
...LED indicator light.

Claims (1)

[Claims for Utility Model Registration] (a) The light emitting part includes a light emitting part, a printed board, a terminal block, and a metal case; (b) The light emitting part has a light emitting diode and a terminal of the electrode of the light emitting diode. (c) the printed board has a circuit component for lighting the light emitting diode and a circuit connected to the circuit component; (d) the terminal block has a , protrudes from the top surface of the terminal block,
and an electrode protruding downward from the terminal block, (e) the light emitting section and the printed board are connected by soldering or the like an electrode terminal of the light emitting section to the circuit at one end of the printed board. , the printed board and the terminal block are connected to each other by soldering an electrode protruding from the top surface of the terminal block to the circuit at the other end of the printed board; (f) the metal case is cylindrical; formed, and
The slit is provided with a slit that has elasticity in the radial direction, and both ends thereof are fitted into the light emitting part and the terminal block, respectively, and fixed by a diameter reduction force, so as to surround the printed board and connect with the common electrode part of the printed board. A light emitting diode indicator lamp, which is connected to the electrode and serves as a protection member for the printed board, and is electrically connected by fitting into a hole provided in a common electrode of an indicator lamp holder.