JP2006179443A - Illumination led mounting board with excellent heat radiation property and case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED device for illumination restraining an effect of heat between a plurality of LEDs arranged, eanabling to reduce a total heat volume by promoting convection of air, operate the LEDs with a higher output, and to densely arrange the LEDs. <P>SOLUTION: The case for the LEDs for illumination is composed of a mounting board on which notches and holes preventing heat transfer between the distribution of the plurality of LEDs are arranged; a case on which an LED unit integrated with the mounting board is mounted; and vent holes communicated with the notches and holes. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an LED mounting substrate shape, a shape of a housing surface on which a substrate-integrated LED is mounted, and a shape of a housing of a lighting fixture that includes them.

  The conventional mounting form of the LED for illumination has been usually arranged on a square base, for example, and attached to the housing. However, due to the recent increase in the output of the LED, this method prevents the heat generated by the LED. However, the heat dissipation performance of the base and the casing could not catch up, leading to a decrease in the illuminance of the LED, a shortened lifetime, and a failure. In addition, when a plurality of high-power LEDs are mounted at a short distance, the heat generated by each LED affects each other, and the total value of the temperature rise is higher than when mounted at an appropriate interval. Invited the state. Conventionally, in order to avoid these problems, the current flowing through the LED itself has been reduced, but as a result, the illuminance has been reduced. Moreover, in order to avoid the mutual thermal influence of several LED, there existed a problem that the light distribution of illumination did not concentrate, when LED was arrange | positioned at appropriate distance.

  The present invention has been made in view of the points pointed out in the background art described above, eliminates the above-mentioned problems, suppresses temperature rise while arranging a plurality of LEDs at a short distance, and drives at higher output. Objective.

  In order to solve the above-described problem, as described in claim 1, each LED (or board-integrated LED unit) is mounted on a board on which a plurality of LEDs are mounted and a housing mounting surface on which the board-integrated LED unit is mounted. ) Provide a notch or hole to partially block the heat transfer between. In addition, as described in claim 2, the luminaire outer casing is provided with an intake port and an exhaust port communicating with the cutout of claim 1.

  Since the housing mounting surface to which the LED mounting substrate of the present invention and the substrate-integrated LED unit are mounted is provided with notches and holes for interrupting and reducing heat transfer between adjacent LEDs. The heat transfer distance at which the heat generation of the LEDs affects each other can be made longer than the actual arrangement distance, and the total temperature rise value can be reduced. In addition, since the notch and the intake and exhaust ports communicating with the holes are provided in the outer casing, the air that has entered from the intake vents of the LED, the mounting base (or the casing surface to which the LED unit is attached) Air convection is easily born by being warmed around and going out from the exhaust port. Furthermore, since this convection passes through the mounting base and the notch (or hole) of the mounting housing close to the LED of the heat source, the temperature rise of the LED can be suppressed more efficiently. From these things, it is possible to suppress the total temperature rise value and drive the LED with higher output while arranging the LEDs at a short distance.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a perspective view from the lower left of an LED, a mounting base to which the present invention is applied, and an outer case, when an LED mounting base is used. FIG. 2 is a perspective view from the lower left of the LED unit, the housing mounting surface to which the present invention is applied, and the outer housing in the case where the board-integrated LED unit is used.

  As shown in the figure, the housing 1 and the housing 2 are produced by, for example, aluminum die casting, and the vent hole 3 and the vent hole 4 are provided, respectively. Then, the LED 6, the LED 7, the LED 8, and the LED 9 are mounted on the substrate 5 provided with the heat transfer preventing cutout 10 and attached to the housing 1. It is assumed that board mounting screws 11, 12, 13, and 14 and board mounting tap holes 15, 16, 17, and 18 provided in the housing 1 are used for the mounting. In addition, power supply to the LED is performed by an electric wire 31, and the electric wire 31 passes through an electric wire notch 32 provided in the housing 1. The housing 1 and the housing 2 are coupled by housing mounting screws 19, 20, 21, 22 and housing mounting tap holes 23, 24, 25, 26, and LED light is provided in the housing 2. The LED light windows 27, 28, 29, and 30 are irradiated outside. Furthermore, it is assumed that a component that supports the entire housing is attached to the support component attachment portion 33. Since the present invention is configured as described above, the heat of each LED or LED unit is hardly affected by the notch 10 and the total heat generation amount can be suppressed. Further, since air entering and exiting from the air holes 3 and 4 passes through these notches, heat dissipation can be promoted by convection, and the total heat generation can be suppressed.

FIG. 2 shows a case where the substrate-integrated LED unit is used as the light source in the configuration described above. In this case, the housing 1 is replaced with the housing 54 provided with the heat transfer-preventing cutout 55 that also serves as a vent hole, and the LED units 34, 35, 36, and 37 are attached to the mounting surface of the housing 54. In this case, the LED unit mounting screws 38, 39, 40, 41, 42, 43, 44, 45 and LED mounting tap holes 46, 47, 48, 49, 50, 51 provided in the housing 54 are used. , 52, 53.

In the configuration described above, the heat transfer preventing cutouts 10 and 55 are not in the shape shown in the figure, but can be replaced with other shapes as long as they are located between the plurality of LEDs and prevent the heat transfer. Alternatively, a plurality of holes can be made in addition to the continuous cutout shape.

In the above-described configuration, the vent hole 3 and the vent hole 4 are provided so long as they communicate with the outside of the housing and the substrate cutout portion 10 (in the case of a board-mounted LED unit, the housing mounting surface cutout portion 55). Other shapes are possible. Moreover, even if it is not a continuous notch shape, an alternative is possible by making a plurality of holes.

In the configuration described above, the vent hole 3 and the vent hole 4 can be substituted even if they are provided at positions other than those shown in the figure as long as they communicate with the outside of the housing and the substrate cutout portion 10.

In the above-described configuration, the casing 1, the casing 2, and the casing 54 can be replaced by other metal, resin, or the like processed in the same shape other than aluminum die casting.

In the configuration described above, the casing 2 can be replaced with a processed transparent resin. In this case, the LED light windows 27, 28, 29, and 30 may not be provided.

In the above-described configuration, the component fixing method can be replaced by other fixing methods such as fitting, lever, and spring.

In the configuration described above, the number of the electric wires 31 varies into a plurality depending on the LED connection circuit such as series or parallel.

In the configuration described above, the number of LEDs is not limited to four, and an appropriate number can be selected from illuminance, power, and the like, and a plurality other than four can be substituted. Further, the arrangement can be replaced even if it is not as illustrated.

In the configuration described above, the notch 32 for the electric wire can be replaced by a shape that secures the shape and cross-sectional area through which the electric wire passes, even if it is not the shape and position of the drawing. Also, a hole that communicates with the outside of the housing can be substituted.

In the above-described configuration, for the reasons of joining, processing, assembly, aesthetics, and the like, even if necessary parts are added, as long as the casing portion vent hole and the heat transfer prevention cutout communicate with each other, an alternative is possible.

In the configuration described above, the housing shape and the number of housings may be any shape and number other than those shown in the figure for reasons of joining, processing, assembly, aesthetics, etc. Alternatives are possible.

In the above-described configuration, the LED light windows 27, 28, 29, and 30 can be replaced with those that are not connected to the outside, but that are provided with transparent resin parts, glass parts, or the like.

In the above-described configuration, the support component mounting portion is not shown in the figure, but can be replaced with one that matches the support component used.

It is a perspective view from the lower left of the mounting base | substrate, outer case, LED, and other components to which this invention was arrange | positioned spaced apart from the height axis. It is a perspective view from the lower left of the outer housing | casing which applied this invention, the board | substrate integrated LED unit, and other components arrange | positioned at intervals in the height axis.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case to which a board is mounted 2 Case 3 Vent hole 4 Vent hole 5 Substrate 6 LED
7 LED
8 LED
9 LED
10 heat transfer prevention notch 11 board mounting screw 12 board mounting screw 13 board mounting screw 14 board mounting screw 15 board mounting tap hole 16 board mounting tap hole 17 board mounting tap hole 18 board mounting tap hole 19 Housing Mounting Screw 20 Housing Mounting Screw 21 Housing Mounting Screw 22 Housing Mounting Screw 23 Housing Mounting Tap Hole 24 Housing Mounting Tap Hole 25 Housing Mounting Tap Hole 26 Housing Mounting Tap hole 27 LED light window 28 LED light window 29 LED light window 30 LED light window 31 Electric wire 32 Electric wire notch 33 Support component mounting portion 34 Integrated board LED unit 35 Integrated board LED unit 36 Integrated board type LED unit 37 Substrate integrated LED unit 38 Substrate integrated L D unit mounting screw 39 Board integrated LED unit mounting screw 40 Board integrated LED unit mounting screw 41 Board integrated LED unit mounting screw 42 Board integrated LED unit mounting screw 43 Board integrated LED unit mounting screw 44 Board-integrated LED unit mounting screw 45 Board-integrated LED unit mounting screw 46 Board-integrated LED unit mounting tap hole 47 Board-integrated LED unit mounting tap hole 48 Board-integrated LED unit mounting tap hole 49 Board Integrated LED unit mounting tap hole 50 Substrate integrated LED unit mounting tap hole 51 Substrate integrated LED unit mounting tap hole 52 Substrate integrated LED unit mounting tap hole 53 Substrate integrated L ED unit mounting tap hole 54 Housing 55 when using board-integrated LED unit Notch to prevent heat transfer

Claims (3)

      A substrate on which an LED is mounted, and a housing on which a board-integrated LED unit is mounted, wherein a notch and a hole for preventing or reducing heat transfer between the plurality of LEDs are provided.       An LED lighting housing provided with the cutout and the vent hole communicating with the hole according to claim 1.       A device for LED lighting according to the combination of claim 1 and claim 2.

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