RU74106U1 - LIGHT DEVICE - Google Patents

Abstract

A light-signaling device refers to traffic lights and can find application in automobile and railway transport. The device contains an optical element (1), a housing (2) and a radiator (3) mounted on the housing (2) as the external wall of the device so that the outer surface of the radiator (3) is located outside the outer surface of the housing (2) in the environment . A board with superbright LEDs (5) is fixed on the inner surface of the radiator (3). The board (4) is made with providing thermal contact of its metal base and superbright LEDs (5). The radiator (3) is made of aluminum alloy. The metal base (4) of the board is fixed on the inner side of the radiator (3) through a gasket (6) made of elastic heat-conducting electrical insulation material and a layer of heat-conducting paste. A power supply (7) of superbright LEDs (5) is fixed in the housing (2). Due to the installation at the base of the housing as the outer wall of the radiator, the simplicity of the design solution is maintained. The location of the outer surface of the radiator outside the outer surface of the housing in the environment increases the efficiency of heat dissipation from high-power LEDs and the reliability of LEDs with increasing ambient temperature. 2 ill.

Description

The claimed utility model relates to the technique of light signaling, namely to traffic lights and can find application in automobile and railway transport as signal and indicating lights.

A signal optical device is known, including a board and a matrix of LEDs placed on it. The board is made in the form of a layered structure containing a metal base and layers of a viscoelastic electrically insulating material and a solid dielectric material with a metallizing layer placed on it in series. The topology of the printed circuit board is made on the metallizing layer, and the LEDs (for planar or through mounting) are installed to provide thermal contact with the metal base, and each of them is equipped with an optical system with a given radiation pattern, in particular a Fresnel lens. In addition, the device is equipped with a sealing protective housing with a transparent cap and a power source located in the housing. (Invention, RF patent No. 2222831, publ. 2004.01.27.).

This invention is a close analogue of the proposed utility model.

The main disadvantage of a close analogue is due to the fact that if a board with powerful LEDs is placed in a sealed device, provided that the ambient

The environment overheats the LEDs. The result of overheating of the LEDs is a decrease in light intensity and an unacceptable change in the color coordinates.

The objective of the proposed utility model is to provide the regulatory optical characteristics of the lighting device in various operating conditions and increase reliability.

The technical result is to increase the efficiency of heat removal without complicating the design.

The problem is solved, and the technical result is achieved due to the fact that the light-signal device contains an optical element, a housing and a board with LEDs installed to provide thermal contact with its metal base.

The novelty lies in the fact that the radiator is additionally installed on the case as an external wall, while the metal base of the board is fixed on the inner surface of the radiator, and the outer surface of the radiator is located outside the outer surface of the case in the environment.

An example of a specific implementation of the device is illustrated by drawings:

figure 1 presents the General layout of the device in section;

figure 2 is a view of figure 1 without an optical element.

The light-signal module contains an optical element (1), a housing (2) and a radiator (3) mounted on the housing (2). The radiator (3) is the outer wall of the housing (2), while the outer surface of the radiator (3) is located in the external environment (figure 1). A board with superbright LEDs (5) is fixed on the inner surface of the radiator (3). The board (4) is made with providing thermal contact of its metal base and superbright

LEDs (5) (figure 2). The radiator (3) is made of aluminum alloy. The board (4) is fixed on the inner side of the radiator (3) through a gasket (6) made of elastic heat-conducting electrically insulating material and a layer of heat-conducting paste (in Fig. 2, the layer of heat-conducting paste is conventionally not shown). A power supply (7) of superbright LEDs (5) is fixed in the housing (2).

The device is mounted as follows.

Install the radiator (3) in the lower part of the housing (2). Align the protrusions of the radiator (3) with the grooves in the housing (2) and turn the radiator (3) clockwise until it stops. Apply a layer of paste on the gasket (6) and with the side greased with the paste, put the gasket (6) on the radiator (3). Install the circuit board (4) on the gasket and fasten with screws. Fix the power supply (7) in the housing (2). Install the optical element (1) on the housing (2), aligning the grooves of the optical element (1) with the protrusions of the housing (2), and turn the optical element (1) clockwise until it stops.

Addition of the general layout of the light-signaling device with a radiator allowed:

- keep the simplicity of the design solution, because the radiator is simultaneously the outer wall of the housing;

- increase the efficiency of heat dissipation from high-power LEDs due to the fact that the outer surface of the radiator is located outside the device, providing direct contact of the radiator with the environment.

- increase the reliability of LEDs and the device as a whole.

Claims (1)

A light-signaling device containing an optical element, a case and a board with LEDs that are installed with the possibility of thermal contact with its metal base, characterized in that the radiator is additionally installed on the body as an external wall, while a board is fixed on the inner surface of the radiator and the outer surface of the radiator located outside the outer surface of the enclosure in the environment.