JP5520398B1 - LED lighting device - Google Patents

Abstract

【Task】
An object of the present invention is to provide an LED lighting device with high heat dissipation by reducing the heat transfer resistance of the substrate support that supports the LED substrate.
[Solution]
In an LED illuminating apparatus including an LED substrate serving as a light source and a substrate support that supports the LED substrate in the main body, the substrate support is formed into a block shape, and the substrate support is aligned with the irradiation direction of the LED substrate. [Selection diagram] Fig. 1

Description

  The present invention relates to an LED lighting device, and more particularly to an LED lighting device used outdoors.

  The LED lighting device used outdoors needs to illuminate a wide range with uniform brightness, and in order to realize this, a plurality of LED substrates mounted with LED elements as light sources are arranged inside the LED lighting device. .

  Since the member that supports the LED light source body is made of a metal plate having high thermal conductivity, the LED illumination lamp described in Patent Literature 1 is a member that supports the LED light source body by heat supplied to the LED light source body (light emission). Since heat can be efficiently dissipated through the LED, an increase in temperature associated with power feeding to the LED element can be suppressed, and sufficient illuminance and product life can be secured.

JP 2012-9316 A

  However, a heat sink and a heat radiating metal plate having a high thermal conductivity and a heat sink made up of a member that supports the LED light source body, that is, a mounting plate on which the LED light source body is mounted and a base plate that is closely fixed to the mounting plate. In spite of being formed using heat, the heat transfer area of the heat path between the mounting plate and the base plate is the plate thickness of the mounting plate, so the heat transfer resistance is high and the heat conduction efficiency is low. There is a problem.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an LED lighting device with high heat dissipation by reducing the heat transfer resistance of a substrate support that supports the LED substrate.

In order to solve the above-mentioned problem, in the invention according to claim 1, an LED unit member serving as a light source, a power supply device and a lighting control device for lighting the LED unit member, and a wiring portion for covering the LED unit member are covered. An inner cover; a main body to which the LED unit member, the power supply device, the lighting control device, and the inner cover are attached; and a cover member that is provided on the main body and covers an irradiation direction of the LED unit member.
The LED unit member includes an LED substrate on which a plurality of LED elements are mounted, a substrate support that supports the LED substrate and is fixed to the main body, and the LED elements are exposed corresponding to the LED elements of the LED substrate. A reflective member formed with a reflective opening,
The substrate support is a block body having thermal conductivity and heat dissipation in which an inclined surface is formed in the irradiation direction of the LED substrate, and a bottom surface fixed to the main body is formed in a block shape.
The smooth surfaces of the bottom surface of the substrate support and the fixed surface of the substrate support fixing portion formed on the main body are fixed in close contact with each other.

In the invention according to claim 2, the substrate support has a substantially trapezoidal cross section, and a screw hole for a fixing screw with the main body is formed on the bottom surface of the substrate support, and the inclination An insertion groove for the fixing screw tightening tool is provided on a vertical surface opposite to the surface .

  According to a third aspect of the present invention, the substrate support is formed by aluminum die casting.

  According to the present invention, by disposing the LED substrate on the main body via the substrate support having heat conductivity and heat dissipation, the heat transfer resistance of the heat path from the LED substrate to the main body is lowered, and heat is efficiently generated. It can be transmitted and heat dissipation can be improved.

It is a component block diagram of the LED lighting apparatus of this invention. It is a figure of an LED unit same as the above, (a) is an external perspective view, (b) is an external perspective view as seen from the bottom direction, (c) is a component configuration diagram, (d) is a line AA ′ in the figure It is sectional drawing. It is a perspective view of the shape inside the main body of the LED lighting apparatus of this invention. It is explanatory drawing about the heat-transfer area of an LED unit, (a) is the perspective view which showed arrangement | positioning of the LED unit in the LED illuminating device of this invention, (b) is CC 'line | wire of description of the figure It is sectional drawing. It is explanatory drawing of an inner cover same as the above, (a) is the perspective view seen from the bottom in attachment state, (b) is the perspective view seen from the top in attachment state, (c) is the direction of the figure (a) description The arrow view of F and (d) are line sectional views of GG 'of the figure (c) description. It is a figure of the state which attached the LED lighting apparatus same as the above to a to-be-attached member, (a) is a whole external perspective view, (b) is sectional drawing which follows the HH 'line | wire of the same figure (a). It is a perspective view of the state which connected each LED unit same as the above and a power supply device by wiring. It is a perspective view of the state which attached each inner LED cover and the power supply device same as the above, after attaching an inner cover. It is a perspective view of the state which attached the same to the to-be-attached member. It is a component block diagram of an automatic blinker same as the above. It is a partially expanded sectional view of a periphery of an automatic blink unit same as the above. It is a perspective view explaining the attachment state to the main body of an automatic flashing unit same as the above, (a) is a perspective view explaining the state after attachment, (b) is before attachment, (c) is the same figure (b) description FIG. 5 is an enlarged view of a portion surrounded by an arrow J. It is line sectional drawing of II 'of FIG. 6 (a) same as the above. It is a back side perspective view of the state which attached the LED lighting apparatus of this invention to the to-be-attached member.

  Hereinafter, embodiments of an LED lighting device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a component configuration diagram of an LED lighting device according to the present invention. As shown in FIG. 1, an LED lighting device 100 of the present invention is housed in a main body 1, a translucent cover 2 fixed to the lower portion of the main body 1, and the main body 1 and the translucent cover 2. The LED unit 4 and an inner cover 3 for covering the lower end portion (wiring portion) of the LED unit 4 are provided. The power supply device 5 and the lighting control device 6 are fixed inside the main body 1, and the translucent cover 2 covers the LED unit 4 and the inner cover 3 fixed inside the main body 1.

  The main body 1 is formed into a substantially semi-disc shape using a metal or a synthetic resin, and the box-shaped translucent cover 2 fixed to the main body 1 by screws or the like is molded using a translucent resin. Yes.

  The structure of each LED unit member 41-46 and 42'-45 'is demonstrated using FIG. Note that the description of the structure of the LED unit member will be made with the LED unit member 43 as a representative example because each LED unit member has the same structure. FIG. 2C is a component configuration diagram of the LED unit member 43, and the LED substrate 43b on which the LED element 200 is mounted is sandwiched between the reflector 43a and the substrate support 43c. The mounting hole 43g provided in the reflector 43a, the mounting hole 43f of the LED substrate 43b, and the fixing hole 43f provided in the substrate support 43c are overlapped, and these three members are fixed simultaneously using a fixing screw 43d. .

  The reflector 43a is molded with a synthetic resin in which an additive having a high reflectance is blended, or is molded with a synthetic resin having good heat resistance, and then subjected to a plating process such as aluminum vapor deposition plating to increase the reflectance. The reflector 43a has a plurality of openings (reflective portions) 43h corresponding to the LED elements so that the light emitting surface of each LED element 200 mounted on the LED substrate 43b is exposed, and surrounds each LED element 200. It is formed in a concave curved shape. Light distribution is controlled by the reflector 43a.

The substrate support 43c is formed in a block shape having a substantially trapezoidal cross section by cutting a material having high thermal conductivity and heat dissipation, such as aluminum, or aluminum die casting. As for the board | substrate support body 43c, the front part becomes an inclined surface, and this inclined surface becomes the irradiation direction of LED board 42b. Fixing holes 43k and 43k ′ are provided in the bottom surface 43j of the substrate support 43c, and the substrate support 43c is fixed to the main body 1 using these fixing holes. That is, an LED unit fixing portion 110 is provided on the inner surface of the main body 1 as shown in FIGS. 4A and 4B, and the LED unit fixing portion 110 will be described later in accordance with the arrangement of each LED unit. Fixing holes 113a and 113b are formed, and the bottom surface 43j of the substrate support 43c is brought into close contact with the surface portion of the LED unit fixing portion 110 and fixed by fixing screws (not shown). In order to tighten the fixing screw with a tool, a tool insertion groove 43n is provided on a vertical surface (see FIG. 2) opposite to the surface on which the LED substrate 43b is attached.

As described above, the inner surface of the main body 1 is provided with LED unit fixing portions 110 for attaching the LED unit members 41 to 45 and 42 'to 45', as shown in FIG. An LED unit fixing part 120 for attaching the member 46 is provided. The LED unit fixing portions 110 and 120 are integrally formed with the main body 1 and are provided on the respective LED unit members 41 to 46 and 42 'to 45'. The substrate supports 41c to 46c and 42'c to 45 'are provided. The bottom surfaces 41j to 46j and 42'j to 45'j of c are flat and smooth so that they are fixed in close contact with each other. In addition, fixing holes 111a to 120a and 111b to 120b for fixing the LED unit are provided. The fixing holes 111a to 120a and 111b to 120b provided in these LED unit fixing portions 110 are, for example, a pair of 113a and 113b that are used for fixing the LED unit member 43 so that a pair of 113a and 113b are used. The fixing hole is determined, and the LED substrate and the reflector can be directed in a predetermined irradiation direction as shown in FIG. 6 simply by fixing the LED unit member to the corresponding fixing hole.

  In the substrate support of the present invention, as shown in FIG. 4B, the bottom surface 44j of the substrate support 44c indicated by the oblique lines in the drawing is in a block shape, so that the substrate support is transmitted in comparison with a thin plate surface of an aluminum plate, for example. Wide heat area. Since the bottom surfaces of the other substrate supports have the same configuration, excellent heat conductivity can be ensured. Furthermore, the surface of the bottom surface of each substrate support and the surfaces of the fixing parts 110 and 120 of the main body are ground so that the surfaces are in close contact with each other to increase the contact area, thereby improving the heat transfer from the substrate support to the main body. Can be made.

  As described above, the heat generated in the LED substrate due to the light emission is transmitted to each substrate support of each of the unit members 41 to 46 and 42 'to 45', and the heat transfer resistance is low, so the LED unit fixing portion of the main body is efficiently provided. 110 and 120 are transmitted, and the transmitted heat is dissipated from the main body to the outside.

  As shown in FIGS. 1 and 7, the power supply device 5 and the LED unit 4 are electrically connected by a wiring 10. That is, the connectors 41m to 46m and 41'm to 46'm are attached to each LED unit member, and the connector 10a is attached to the end portion (both ends) of the wiring 10 correspondingly. The connectors are detachably connected. For example, the connector 10 a at the end of the wiring 10 is connected to the connector 45 m attached to the LED unit member 45, and the connector 10 a at the other end of the wiring 10 is connected to the connector 44 m of the LED unit material portion 44 adjacent to the LED unit member 45. Thereafter, by connecting the connector 10a attached to the wiring 10 in order to the connector of the LED unit member in the same manner, wiring can be reliably performed while preventing erroneous wiring. The connectors 41m to 46m and 41'm to 46'm are wiring connectors having a known structure that are usually used in electric appliances.

  The inner cover 3 has a substantially semi-disc shape corresponding to the shape of the main body 1 and is formed using a synthetic resin. 6B is a cross-sectional view taken along the line HH ′ of FIG. 6A, and the inner cover 3 has a wall 33 and a wall 33 rising from the bottom surface portion 32 as shown in FIGS. 5 and 6B. 5 is formed by a folded portion 34 that extends in a substantially horizontal direction. As shown in FIGS. 5A and 5B, the bottom surface portion 32 has hollow cylindrical projecting portions 35, 36, and 37. As shown in FIG. 5 (c), screw holes 35a, 36a, and 37a through which fixing screws (not shown) pass are provided at the bottoms thereof. As shown in FIGS. 5 (c) and 5 (d), the inclined portion 31 of the LED unit 46 is in the opposite direction to the attached member 8 indicated by the arrow in FIG. It is formed to be inclined so as to irradiate, and an opening 31a is provided in the inclined portion. The LED unit 46 irradiates through the opening 31a. As shown in FIG. 6B, the inner cover 3 has fixing bosses 17a, 17b, 17c provided inside the main body 1 by using fixing screws (not shown) in these screw holes 35a, 36a, 37a. Fixed to.

  The inner cover 3 covers the power supply device 5 and the lighting control device 6 fixed to the inside of the main body 1 from below, and also connects the connectors 41m, 42m,... The wiring 10 for connection is also covered. Since the inner cover 3 covers the portions of the connectors 41m, 42m,..., LED irradiation from the opening 43h of the LED unit group 4 is not hindered.

  FIG. 7 shows a state where wiring with the power supply device 5 and each LED unit is completed. In FIG. 7, the cover is removed so that the internal state can be seen. As can be seen from FIG. 7, the appearance of the wiring 10 connected to the LED unit group 4 is complicated because it looks complicated.

  FIG. 8 shows a state in which the inner cover 3 is attached to the main body 1. The inner cover 3 covers the power supply device 5, the lighting control device 6, and the connectors 41m to 46m and 41'm to 46'm to which the wiring 10 is connected. Further, the wiring 10 and the connectors 41m to 46m and 41'm to 46'm connected to the wiring 10 are also covered.

  As described above, the inner cover 3 attached to the main body 1 includes the power supply device 5 and the lighting control device 6 fixed inside the main body 1, the connector provided at the lower part of the LED unit group 4, and further electrically connected thereto. 9, when the LED lighting device 100 attached to the attached member 8 is looked up from below, the reflector of the LED unit group 4 is covered by the inner cover 3 as shown in FIG. 9. Since portions other than 41a to 46 and 42'a to 45'a cannot be seen, the aesthetic appearance is not impaired.

The LED lighting device 100 described above is provided with an automatic flashing unit 7 (FIG. 1). As shown in FIGS. 10 and 11, the automatic flashing unit 7 includes an automatic flashing substrate 71 having a light receiving sensor 71c, a light shielding member 73, and a translucent cap 72. The light shielding member 73 has a partition wall portion 73e at an intermediate portion, and a gap portion 73b is formed in the front portion of the partition wall portion 73e. The automatic flashing substrate 71 is mounted in an automatic flashing substrate housing recess 73a formed at the rear end of the light shielding member 73, and the light receiving sensor 71c has an opening 73d (see FIG. 10) provided in the partition wall portion 73e . It passes through and protrudes into the gap 73b. The opening side (front end side) of the gap 73b of the light shielding member 73 is inserted into a groove 14a provided on the inner wall of the main body 1 to ensure light shielding properties and substrate retention. The light shielding member 73 is formed of black rubber or the like having good light shielding properties.

  The light shielding member 73 that accommodates the automatic flashing substrate 71 is inserted into the substrate fixing slits 18a, 18b, 18c, and 18d provided in the main body 1 shown in FIG. Thus, the axial direction of the light receiving sensor 71c attached to the automatic flashing substrate 71 housed in the light shielding member 73 is fixed. The four corners 71a, 71a ′, 71b, 71b ′ of the automatic flashing substrate 71 shown in FIG. 10 are inserted into the substrate fixing slits 18d, 18a, 18c, 18b, respectively, and bosses 17, 17 ′ extending from the inner wall of the main body 1. When the bottom extension 61 of the lighting control device 6 is fixed with a screw or the like, the automatic flashing substrate 71 is sandwiched between the bottom extension 61 of the lighting control device 6 and the substrate fixing slits 18a, 18b, 18c, 18d, and the automatic A light blocking member 73 that houses the blinking substrate 71 is fixed inside the main body 1 as shown in FIG.

  As shown in FIG. 11, the translucent cap 72 has a cylindrical portion 72 b that is press-fitted into the daylighting hole 14 provided in the main body 1, and a diameter larger than the diameter of the daylighting hole 14 at one end side of the cylindrical portion 72 b. A circular daylighting window portion 72a and an engaging portion 72c are formed on the other end side of the cylindrical portion 72b so that the translucent cap 72 does not come off. Since the daylighting window portion 72a, the cylindrical portion 72b, and the engaging portion 72c are in close contact with the daylighting hole 14, the watertightness is high and the intrusion of rainwater or the like is prevented. The translucent cap 72 is integrally molded using a translucent soft member such as silicone rubber.

  As described above, a space for the light receiving sensor 71c to receive light is formed by the light blocking member 73, the daylighting window portion 72a, and the daylighting hole 14, and the light blocking member 73 prevents intrusion of disturbance light. Only the light taken from 72a can be received.

  In response to an output signal from the automatic flashing substrate 71, the lighting control device 6 connected to the power supply device 5 cuts off the supplied power and controls the supply, and the LED unit is turned off / on. Is called.

  FIG. 13 is a cross-sectional view taken along the line II ′ of FIG. 6A. The automatic flashing unit 7 is shifted from the center when viewed from above, and the LED lighting device 100 is attached to a member 8 such as a utility pole or pole. It is provided on the side of the mounting arm 15 for mounting to the head. When the translucent cap 72 is provided in the center of the LED lighting device 100, that is, between the mounted member 8 and the mounting arm 15, foreign matter such as fallen leaves closes the space surrounded by the mounted member 8 and the mounting arm 15. In such a case, even if the surroundings are bright, the illuminance taken from the translucent cap 72 decreases, and the automatic flashing unit 7 is determined to be at night, and there is a possibility that the lighting will continue indefinitely. In order to prevent such a malfunction, the automatic flashing unit 7 is installed shifted from the center so as not to be covered with foreign matter such as fallen leaves.

  FIG. 14 shows a state in which the LED lighting device 100 is attached to the attached member 8. The translucent cap 72 of the automatic flashing unit 7 is attached substantially horizontally and in a direction substantially opposite to the irradiation direction of the LED unit 4 of the LED lighting device 100. By installing in this position, light from the upper side is not received, so that it is possible to prevent disturbance light such as lighting of surrounding buildings and lights such as signs at night, and light from the lower side is not received. When the road surface is brightly illuminated for a certain period of time to recognize that the automatic flasher has been brightened by the car lights at night without receiving ambient light, the switch built into the automatic flasher is It is possible to prevent a malfunction that is shut off and turned off. Further, the light shielding member 73, the daylighting window 72a, and the daylighting hole 14 form a space for the light receiving sensor 71c to receive light, and the light shielding member 73 prevents the intrusion of disturbance light. It is also possible to prevent a malfunction in which the light reflected by the protective cover 2 is received and recognized as being brightened outside.

  An eaves 11 is provided on the translucent cap 72 to prevent disturbance light from entering the translucent cap 72, and rainwater or the like falls directly on the translucent cap 72, and the LED lighting device. Prevents water from entering the interior of 100.

DESCRIPTION OF SYMBOLS 1 Main body 2 Translucent cover 3 Inner cover 4 LED unit group 41c-46c, 42'c-45'c Board | substrate support body 5 Power supply device 7 Automatic blinking unit 8 Mounted member 10 Wiring 11 庇 14 Daylighting hole 100 LED illumination device 110, 120 LED unit fixing part 200 LED element

Claims (3)

An LED unit member serving as a light source, a power supply device and a lighting control device for lighting the LED unit member, an inner cover for covering a wiring portion of the LED unit member, the LED unit member, the power supply device, and the lighting control device; A main body to which the inner cover is attached, and a cover member that is provided on the main body and covers the irradiation direction of the LED unit member.
The LED unit member includes an LED substrate on which a plurality of LED elements are mounted, a substrate support that supports the LED substrate and is fixed to the main body, and the LED elements are exposed corresponding to the LED elements of the LED substrate. A reflective member formed with a reflective opening,
The substrate support is a block body having thermal conductivity and heat dissipation in which an inclined surface is formed in the irradiation direction of the LED substrate, and a bottom surface fixed to the main body is formed in a block shape.
A smooth surface between the bottom surface of the substrate support and a fixing surface of a substrate support fixing portion formed on the main body is fixed in close contact with each other. The substrate support has a substantially trapezoidal cross section, and a screw hole for a fixing screw with the main body is formed on the bottom surface of the substrate support, and the fixing screw tightening tool is formed on a vertical surface opposite to the inclined surface. The LED illumination device according to claim 1, wherein an insertion groove is provided .   The LED lighting device according to claim 1, wherein the substrate support is formed by aluminum die casting.