JPH0241660Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The invention is used by being attached to a display panel as a light source for an electronic display device used in a large electronic display unit for outdoor information equipment or an electronic display tower for advertising, etc. LED
It concerns lamps.

[Conventional technology]

The LEDs attached to the display panel as dot light sources in this type of electronic display device are the 4th to 5th LEDs.
The structure shown in the figure is generally used.
In this known structure, 1 is a panel, which has a predetermined width and is provided with mounting holes 2 for a plurality of light sources vertically and horizontally, and the panel is required depending on the size of the electronic display section. A display section is formed by attaching a large number of display devices adjacent to each other. This one panel is for example 5×7 dots, and has 5 rows of dots in the vertical direction and 7 rows in the horizontal direction, and a light source for the dots is installed in each of the mounting holes 2. .

This light source for dots is provided in a plurality of dots in a semicircular resin container 3 as shown in FIG.
A printed circuit board 5 on which an LED 4 is attached is provided, and the printed circuit board 5 is fixed with two screws 6 inside the resin container 3 at an angle of about 15 degrees. Then, the resin container 3 is fitted into the mounting hole 2 of the panel 1 from the inside toward the outside, and the flange portion 3a of the resin container 3 is fixed with fixing screws 7 at four locations. In this case, a caulking agent 8 is filled between the flange portion 3a and the panel 1 to prevent rainwater etc. from entering the inside of the panel 1. Note that 9 is a lead wire for supplying power to the LED 5.

[Problem that the invention attempts to solve]

In the conventional example described above, when attaching the resin containers to the panel, not only do caulking agents have to be applied to each individual container, but also four fixing screws must be tightened to fix the containers, resulting in poor workability. . Further, since the resin container is not sealed, the printed circuit board and lead wires are in direct contact with the air, and there is a problem in that dust, dirt, oil, exhaust gas, etc. in the air may adhere to the resin container, causing problems.

[Means for solving problems]

The present invention is a specific means for solving the problems of the conventional example, in which a printed circuit board with a plurality of LEDs mounted on it is arranged at a predetermined inclination angle inside a capsule-shaped lamp body with an opening at the front, and a mounting bracket is attached to the lamp body. An LED for a display device, characterized in that the LED is fixed and sealed by attaching a light-transmitting cap to the opening on the front side, and an external connection pin connected to an internal lead connected to the LED is provided on the back side. The lamp is fixed by simply inserting the lamp body directly into the mounting hole of the panel, and can be installed with one touch.The printed circuit board and internal lead wires are sealed, and there are no external connection pins. Since it has a connection structure according to the above, wiring can be done easily.

〔Example〕

Next, the present invention will be explained in more detail with reference to the illustrated embodiment. Reference numeral 11 denotes a lamp body, which is formed of resin or the like into a capsule shape having an opening 12 on the front side, and the outer peripheral surface on the opening side. The flange portion 13 is integrally formed with the flange portion 13.
A plurality of guide protrusions 11a are integrally formed on the back side of the lamp body at intervals to fit panels to be described later. In the illustrated example, four guide projections are provided and are tapered toward the back side. Inside the lamp body 11, square holes 14 and 15 are provided at vertically symmetrical positions, and mounting brackets 16 and 17 are inserted and fixed into the square holes, respectively, and a plurality of LEDs 18 are attached to the mounting brackets on a printed circuit board. 19 is attached with two screws 20. In this case, one of the mounting fittings 16 and 17 is formed to be longer so that the printed circuit board 19 is inclined at an angle of 5 to 15 degrees. Especially the mounting bracket 1
6 and 17 may be prepared in various lengths so that the angle of inclination of the printed circuit board 19 can be changed depending on the location or height at which the display device is installed, and may be changed as needed. This mounting bracket 16,1
7 and the square hole are pressed and fixed using the elasticity of the metal fittings.

LED 1 attached to the printed circuit board 19
A plurality of internal leads 21 for supplying power to 8 are taken out to the back side through appropriate series resistors 22,
The lead ends of each lead are passed through the external connection pins 23, and are connected and fixed at the ends of the external connection pins by means such as soldering.

A cap 24 of an appropriate shape is removably attached to the front side of the lamp body 11, and the cap can be transparent or colored in an appropriate color, and can also function as a lens. By applying this cap, the lamp body 11 is brought into a sealed state.

Incidentally, the external connection pin 23 taken out on the rear side can be easily connected to a display drive section (not shown) through a socket 25 of a wire harness.

The LED lamp of the present invention configured in this way is positioned so that the printed circuit board faces downward in the mounting hole 27 provided in the panel 26 of the display device, and the lamp body 11 is inserted from the front side of the panel 26. Then, the guide protrusion 11a is press-fitted while coming into contact with the inner surface of the mounting hole 27, and the guide protrusion 11
a, the panel 26 is positioned and fixed in the gap between the guide protrusion 11a and the flange portion 13. In other words, for the mounting hole 27 of the panel 26
The LED lamp 11 can be installed with one touch by simply pushing it in. Electrical connection to the display driver can be easily made by simply inserting a wire harness socket into the external connection pin on the back side.

[Effect of idea]

As explained above, for the display device according to the present invention,
The LED lamp is inside the capsule-shaped lamp body.
It is equipped with a printed circuit board with an LED mounted on it, and the opening on the front side is covered with a cap to seal it, so it is highly waterproof and the printed circuit board and internal leads do not come into contact with the air, preventing rust and insulation. Since defects will not occur, stable use can be expected over a long period of time, and the lamp body can be easily mounted with one touch by simply press-fitting the lamp body into the mounting hole of the panel.

Further, by providing an external connection pin connected to an internal lead on the back side of the lamp body, an excellent effect can be achieved in that it can be easily connected to the display drive section via the socket of the wire harness. Furthermore, when installing the printed circuit board, by selecting the length of the mounting bracket, the inclination angle of the printed circuit board can be arbitrarily set depending on the installation location of the display device, which is an excellent effect.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the LED lamp according to the present invention installed on a panel, and Figure 2 is the same LED lamp.
FIG. 3 is a front view of the lamp, FIG. 3 is a perspective view of the same LED lamp, FIG. 4 is a schematic cross-sectional view of a panel to which a light source is attached in a conventional display device, and FIG.
It is an enlarged view of the part indicated by V in the figure. 11...Lamp body, 11a...Guide protrusion,
12...Opening part, 13...Flange part, 14,1
5... Square hole, 16, 17... Mounting bracket, 18...
LED, 19...printed circuit board, 20...screw,
21...Internal lead, 22...Series resistance, 23...
...External connection pin, 24...cap.

Claims (1)

[Scope of utility model registration request] A printed circuit board with multiple LEDs mounted inside a capsule-shaped lamp body with an opening at the front is arranged at a predetermined inclination angle and fixed with a mounting bracket, and a light-transmitting cap is attached to the opening on the front side. 1. An LED lamp for a display device, characterized in that the LED lamp is sealed and has an external connection pin connected to an internal lead connected to the LED on the back side.