JPH0542465Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an LED dot matrix display unit installed outdoors.

<Conventional technology> In the conventional outdoor LED dot matrix display unit, the display part, which is made up of a non-waterproof unit, is covered with a transparent protective plate such as an acrylic plate or glass, and the other parts are covered with a waterproof casing. I kept it in my body. In addition, the front panel is made of a single material,
This material held the lamp.

<Problems to be solved by the invention> As mentioned above, the display part was conventionally made waterproof by installing a transparent protective plate such as glass or acrylic plate in the opening of the waterproof casing. ,
Due to limitations in the strength and size of the protective plate, it was difficult to expand the display area. In addition, since the surface of the protective plate is flat, the display contrast may be significantly reduced due to reflection of sunlight.Furthermore, since the front panel is made of a single material, the temperature of the LED lamp may increase due to direct sunlight. There were times when it rose.

In view of the above points, the present invention has been developed to provide an outdoor LED dot matrix display unit that can be waterproofed without hindering the expansion of the display area, does not reduce display contrast, and prevents heating of LED lamps. The purpose is to provide

<Means for solving the problem> Between two panels in which lamp insertion openings are provided in a matrix, rubber openings with a diameter equal to or smaller than the lamp diameter are arranged in a matrix. sandwich the sheets provided in the sandwich pattern. Insert and hold the LED lamp in this state. Further, the two panels described above have a layered structure of a heat insulating material and a heat conducting material.

<Function> By providing a waterproof function to the front surface of the LED dot matrix display unit with the above structure, the display surface can be constructed without providing a special protective plate on the front surface of the unit. As a result, it is possible to realize a large screen and improve display quality using the LED dot matrix display unit. In addition, the front panel is made of two layers: a heat insulating material and a heat conducting material, which prevents the lamp from being heated by direct sunlight and prevents a decrease in brightness.

<Embodiment> FIG. 1 is a partially sectional perspective view showing the front panel portion of an embodiment of the present invention, and FIG. 2 is a sectional view showing the lamp insertion function state.

The front panel of this example includes a heat insulating resin panel 1,
It is composed of a rubber sheet 2 and a heat conductive aluminum panel 3.

That is, the above-mentioned configuration provides a matrix of panels 1 and 3 having openings for inserting LED lamps 4.
A rubber sheet 2 having a matrix-like opening of the same size as or smaller than the LED lamp is sandwiched between the panels 1 and 3, and after the lamp 4 is inserted into the opening, the rubber sheet 2 is tightly clamped by the outer panels 1 and 3 to hold the lamp 4 and also to provide a function of preventing the opening.

The aluminum panel 3 is provided with an opening having a diameter such that it contacts the lamp 4, so that the heat generated by the lamp 4 is radiated from the back surface of the panel. Also,
When the lamp 4 is inserted into the rubber sheet 2,
It acts as a gasket and prevents water from entering between the opening and the lamp 4, and the resin panel 1 acts as a buffer material to prevent heat added by direct sunlight from being conducted to the aluminum panel. There is. Further, the resin panel 1 is provided with an opening larger than the diameter of the lamp in order to absorb distortion of the rubber sheet 2 when the lamp is inserted and to prevent heat from direct sunlight from being transmitted to the lamp 4.

<Effects of the invention> As described above, according to the invention, the display area can be expanded, the rubber sheet in the panel can prevent water from flowing in between the panel opening and the lamp, and the heat insulating material A useful outdoor product that uses a three-layer structure of heat-conducting material to suppress heating of the LED lamp due to direct sunlight and heat generated by the LED, and promote heat dissipation.
We can provide LED dot matrix display units.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional perspective view showing a front panel portion in an embodiment of the present invention, and FIG. 2 is a sectional view showing a lamp inserted state. 1...Resin panel, 2...Rubber sheet,
3... Aluminum sheet, 4... LED lamp.

Claims (1)

[Scope of utility model registration request] A rubber sheet with a matrix of openings that are the same size or smaller than the LED lamp size is sandwiched between an insulating resin panel and a heat conductive aluminum panel that have a matrix of openings into which LED lamps are inserted. An outdoor LED dot matrix display unit comprising a front panel in which the LED lamp is inserted and held using a rubber sheet as a gasket.