JP2011091015A - Cooling and strength reinforcement device of fluorescent-lamp type led lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluorescent-lamp type LED lighting device of lightweight and of a structure which is effective for heat radiation, in a device made of a resin tube including a plurality of LED chips and a base. <P>SOLUTION: A steel material made of aluminum is enclosed inside a resin tube 4. The L-shaped aluminum steel 6 enclosed in the resin tube 4 is connected to an LED-mounted printed board 5, where a plurality of LED chips 7 are mounted and an AC/DC converter 8, and consequently, control of the temperature rise inside the resin tube 4 and strength reinforcement of the fluorescent-lamp type LED lighting device are carried out simultaneously. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to cooling and strength reinforcement of a single fluorescent lamp type LED illumination using an LED (Light Emitting Diode) attached to a lighting fixture.

The structure of a fluorescent lamp type LED illumination will be described as a conventional technique.
FIG. 1 is a general external view of a conventional fluorescent lamp type LED illumination.
As shown in FIGS. 1 and 3, the fluorescent lamp type LED illumination is mainly composed of a plurality of 7LED chips, a 5LED mounting printed board and 8AC / CD converter for mounting these LEDs, 4 resin tubes and 2 caps containing them. It is configured.

  A direct current is required to light the LED, but since the commercial current is alternating current, an 8AC / CD converter that converts alternating current to direct current is required. The AC current that enters the fluorescent lamp type LED lighting through the 3 cap pins is converted to DC by the 8AC / CD converter, sent to the 5LED mounting printed board, and the DC current flows through the 7LED chip mounted on the 5LED mounting printed board. The LED lights up.

  The 8AC / CD converter generates heat when the alternating current is changed to the direct current in a series of processes for lighting the 7LED chip. Furthermore, since the 7LED chip also generates heat when a current flows through the 7LED chip and emits light, the temperature in the four resin tubes containing these rises compared to the outside temperature. The 7LED chip has a characteristic that the lifetime decreases when the temperature becomes high.

  In order to prevent the temperature rise inside the 4 resin pipes due to the above-mentioned reasons, as a conventional method, an AC / CD converter is installed outside the resin pipe, or a steel material such as aluminum is installed on the back of the resin pipe so that the outside of the resin pipe is outside. Take measures to dissipate heat.

  In general, the four resin tubes are formed of polycarbonate, and the polycarbonate has a property of extending when heated. When this is used as a tube for LED lighting, the conventional shape cannot be maintained due to the generated heat and its own weight, and when it is mounted on a lamp, it falls down from the lamp socket as a worst case. There is a fear. A member that reinforces other than the members constituting the above-described single fluorescent lamp type LED illumination for maintaining the shape is required.

  In the prior art, as described above, for the purpose of heat radiation and strength reinforcement, a method of attaching aluminum steel material to the back surface of the resin tube is mainly used. However, fluorescent lamps can be attached depending on the strength of the socket of the lamp to be attached. The weight of the lamp is specified, and there is a risk of exceeding the specified weight in the above-described method.

JP 2009-105354 A

  1 Fluorescent lamp type LED lighting includes a plurality of 7LED chips, a 5LED mounting printed circuit board for mounting these 7LED chips and an 8AC / CD converter in a resin tube, and both ends of the tube are sealed with two caps. Therefore, the temperature inside the tube becomes higher than the outside due to heat generated from the 8AC / CD converter and the 7LED chip itself. Since the 7LED chip has a characteristic that the lifetime decreases when the temperature becomes high, the temperature inside the four resin tubes must be diffused and cooled.

  Due to the nature of 4 resin tubes of 1 fluorescent lamp type LED lighting, it has heat expansion and contraction characteristics. The four resin tubes are extended because the internal temperature of the four resin tubes becomes higher than the outside air temperature due to the heat generated by the fluorescent lamp type LED lighting itself. When this is installed in a current lighting fixture and used, the phenomenon that the center of the tube hangs down due to the weight of one fluorescent lamp type LED lighting and the characteristics of four resin tubes due to heat, and in the worst case, there is a risk of falling off the lamp. .

In order to solve the above-mentioned problem, a method of reinforcing the strength of incorporating a metal member into a part of the 4 resin tube and a method of increasing the thickness of the 4 resin tube can be considered. Since there is a weight rule guaranteed by each manufacturer for excess weight, it is necessary to keep the weight of one fluorescent lamp type LED illumination within the weight within the rules of a commercially available lamp.
An object of the present invention is to provide a single fluorescent lamp type LED illumination having a structure that is lightweight and has good heat dissipation as a means for solving these problems.

  In order to solve the above problem, by attaching an aluminum steel material with good thermal conductivity to the back of the 5LED mounting printed circuit board contained in 4 resin tubes of 1 fluorescent lamp type LED lighting, and simultaneously connecting to 8AC / CD converter Both the heat generated by the LED itself and the heat generated by the 8AC / CD converter are diffused at a time through this steel material and dissipated.

  The 6L type aluminum steel material is bonded to a 5LED mounting printed circuit board and encapsulated in 4 resin tubes of 1 fluorescent lamp type LED illumination, thereby preventing a change in shape of the 1 fluorescent lamp type LED illumination itself.

  ADVANTAGE OF THE INVENTION According to this invention, the temperature rise inside 1 fluorescent lamp type LED lighting is prevented, shape change is prevented, and 1 fluorescent lamp type LED lighting with long life and high safety | security is realizable.

It is a perspective view which shows the straight tube | pipe type fluorescent lamp type LED illumination of embodiment which concerns on this invention. It is a block diagram which shows the cross section of the straight tube | pipe type fluorescent lamp type LED illumination of embodiment. It is the schematic diagram which mounted | wore the L-type aluminum steel material with the AC / CD converter.

Embodiments according to the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 2, a 5LED mounting printed board in which 7LED chips are attached to 10 ribs running on the inner surface of the tube is passed. A 6L type aluminum steel material is mounted on the opposite surface of the printed circuit board on which the 7LED chip is mounted.

An 8AC / CD converter is connected to a 6L type aluminum steel material mounted on a 5LED mounting printed board with 9 connecting screws.

Claims (2)

  In order to promote diffusion of internal temperature and temperature reduction in an LED circuit having a plurality of LEDs, an AC / CD converter for driving the LED circuit, and a fluorescent lamp type LED lighting device including a resin tube and a base including them Cooling system   Strength reinforcement device for preventing fluorescent lamp type LED lighting device having the above structure from changing shape due to heat

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