JP6658834B2 - Lighting equipment - Google Patents

Description

  Embodiments described herein relate generally to a lighting device capable of improving insulation performance.

  2. Description of the Related Art Conventionally, for example, in a lighting device used outdoors, such as a security light or a street light, a main body, which is an outer shell of the lighting device, is formed of a metal material in terms of durability and strength. Further, a case which is attached to the main body and houses a power supply circuit for controlling lighting of the light source may be formed of a metal material. When a metal material is used for the main body of these lighting devices, it is necessary to ground from the viewpoint of safety. When the lighting device whose main body is formed of a metal material is grounded, a surge voltage due to lightning or the like is generated between the charged portion and a portion having the same potential as the ground potential.

  Therefore, it is necessary to ensure insulation performance that can withstand a lightning surge between the charged portion and a portion having the same potential as the ground potential. For example, it may be necessary to secure a predetermined distance between a case and a wiring pattern on a printed circuit board that constitutes a power supply circuit in order to ensure insulation performance against a high voltage due to a lightning surge or the like. In addition, there is a problem that the range in which the wiring pattern is formed, that is, the layout of the wiring pattern is limited.

  For this reason, it is known that an insulating sheet is provided on the upper and lower surfaces of a power supply circuit in order to avoid the restriction of the layout of the wiring pattern and secure the insulating performance.

JP 2010-108879 A

  However, in the above configuration, the insulation performance is insufficient against a high voltage due to a lightning surge or the like, and when a high voltage is applied to a charging unit, for example, a metal case, the charging unit passes through the charging unit case. There is a possibility that an overvoltage is applied to the circuit component and the circuit component is destroyed.

  The present invention has been made in view of the above problems, and has as its object to provide a lighting device that has excellent heat dissipation even when it is downsized.

The lighting device according to the embodiment of the present invention is a device main body, which has an opening, has a plurality of mounting bosses erected on the back side with an interval in the short direction, and on one end side in the longitudinal direction. , the apparatus main unit body and having a mounting portion for mounting a predetermined mounting target; a power supply device, the said four attachment bosses of the mounting member and the apparatus main body for mounting the power unit A power supply circuit in which a plurality of circuit components are disposed in a space where the boss is formed, which is a space formed ; a power supply device disposed in the four mounting bosses; A substantially mountain-shaped mounting plate having a pair of inclined surfaces extending from the boss tip to the back side of the device body while extending the distance greatly in the short direction of the body, and protruding toward the opening side of the device body. The mounting plate. A light-emitting element substrate attached to a surface; a part of the light-emitting element substrate is located on the back side of the device main body with respect to the tip of the boss, and the power supply device and the light-emitting element substrate are connected to each other. The mounting plates to be mounted overlap each other when viewed from the opening side of the apparatus main body.

  According to the embodiment of the present invention, it is possible to provide a lighting device that can hold a power supply circuit stably while suppressing deformation of the lighting device even when used for a long time. Further, while the light-emitting element is turned on, heat is generated from the light-emitting element. However, it is possible to provide a lighting device in which the heat from the light-emitting element during the turn-on is transmitted to the fixture side and can be dissipated.

FIG. 1 is a perspective view illustrating a lighting device according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view showing the glowing device in the lighting device. It is a perspective view which removes and shows a glove in the same lighting device. FIG. 4 is a cross-sectional view of the lighting device taken along line YY in FIG. 3. It is a top view which shows a power supply device seen from the back side. It is a side view showing the state where the same lighting installation was attached to a telephone pole. FIG. 5 is an exploded perspective view illustrating a power supply device according to a second embodiment of the present invention. FIG. 5 is a sectional view corresponding to FIG. 4.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. This embodiment shows a security light as the lighting device. Security lights are installed and used on poles such as telephone poles and parks erected on roads, outer walls of factories, and the like, and are mainly used to ensure pedestrian safety.

  FIG. 1 is a perspective view showing a security light, FIG. 2 is an exploded perspective view showing a glove removed, and FIG. 3 is a perspective view showing a glove removed. FIG. 4 is a sectional view, and FIG. 5 is a plan view showing the power supply device as viewed from the rear side. FIG. 6 is a side view showing a state in which a security light is attached to a utility pole. In each of the drawings, the same portions are denoted by the same reference numerals, and redundant description will be omitted.

  The security light includes a device main body 1, a globe 2, a light source unit 3, and a power supply device 4. The apparatus main body 1 is made of a metal material, for example, is made of aluminum die-cast, and is formed in a substantially boat shape with an open lower part, and is provided with a light source unit 3, a power supply device 4, and an automatic blinker, which will be described later. ing. On the back side of the inner peripheral surface of the apparatus main body 1, four mounting bosses 11 for mounting the power supply device 4 and other mounting bosses are integrally provided upright.

  As shown in FIGS. 2 to 4, a substantially mountain-shaped metal mounting plate 12 having inclined surfaces on both sides is mounted on the opening side of the apparatus main body 1 so as to protrude toward the opening side. The light source unit 3 is mounted on the inclined surface of the mounting plate 12. Note that the mounting plate 12 may be configured as a reflection plate.

  The globe 2 is formed in a substantially boat-like shape with an upper opening, which is attached so as to cover a lower opening of the apparatus main body 1. The front end side of the glove 2 is connected to the apparatus main body 1 by a hinge 21 so as to be openable and closable, and the rear end side is screwed.

  As shown in FIGS. 1 and 4, the globe 2 is made of a light-transmissive material such as an acrylic resin, and a plurality of prisms integrally formed on both sides of the inner surface in the longitudinal direction. Have been. The prism is formed so that ridge lines are continuous in the longitudinal direction, and has a function of refracting light emitted from the light source unit 3 and distributing light mainly to the side (a direction orthogonal to the longitudinal direction). I have.

  The light source unit 3 includes a substrate 31 and a plurality of light emitting elements 32 mounted on the substrate 31. On the front surface side of the substrate 31, a lens member formed of a transparent material such as acrylic resin (not shown) having a lens portion formed so as to face each light emitting element 32 is arranged. .

  The substrate 31 is formed in a substantially rectangular shape and is made of a flat plate of a glass epoxy substrate (FR-4) or a glass composite substrate (CEM-3), which is an insulating material, and a wiring formed of copper foil on the surface side. A pattern is formed. When the substrate 31 is made of an insulating material, a ceramic material or another synthetic resin material can be used. Further, in the case of using a metal, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good heat conductivity and excellent heat dissipation, such as aluminum, can be applied.

  Such substrates 31 are attached to the inclined surfaces on both sides of the attachment plate 12 by fixing means (not shown).

  The light emitting element 32 is an LED, and is a surface mount type LED package. Roughly composed of an LED chip mounted on a body made of ceramics or heat-resistant synthetic resin, and a translucent resin for molding such as epoxy resin or silicone resin that seals the LED chip Have been.

  The LED chip is a blue LED chip that emits blue light. In the translucent resin, a phosphor is mixed, and in order to emit white light, a yellow phosphor that emits yellow light having a complementary color with blue light is used. I have.

  The LEDs may be mounted as shell-type LEDs, and the mounting method and format are not particularly limited.

  In addition, it is preferable to form a white resist layer over the entire surface of the substrate 31. This resist layer acts as a reflective layer, and can reflect light toward the surface of the substrate 31 out of the light emitted from the light emitting element 32 toward the front side, thereby effectively reducing the light emitted from the light emitting element 32. Can be used.

  The power supply device 4 is connected to a commercial AC power supply AC by a power supply line, and receives the AC power supply AC to generate a DC output.

  The power supply device 4 is configured, for example, by connecting a smoothing capacitor between output terminals of a full-wave rectifier circuit, and connecting a DC voltage conversion circuit and current detecting means to the smoothing capacitor. Therefore, the power supply unit 4 is connected to the light source unit 3 by a wiring connection member such as a lead wire, supplies its DC output, and controls lighting of the light source unit 3. Note that two power supply devices 4 may be provided corresponding to each substrate 31.

  As shown in FIGS. 2, 4 and 5, such a power supply device 4 is disposed on the back side of the mounting plate 12, and has a mounting member 41 having an insulating property and a metal box-like shape. A case 42 and a power supply circuit 43 housed in the case 42 are provided. Further, the power supply circuit 43 has a printed wiring board 44 and a circuit component 45 mounted on the printed wiring board 44.

  The mounting member 41 is formed of a plate-like synthetic resin material having an insulating property, and has a substantially rectangular shape. Further, the mounting member 41 has predetermined heat resistance and durability. Specifically, a bakelite plate is used.

  The mounting member 41 has four screw holes 41 a as mounting portions for the apparatus main body 1 corresponding to the mounting bosses 11 erected on the back side of the apparatus main body 1, and is used for mounting the case 42. Two screw holes 41b are formed.

  The case 42 is formed in a box shape by bending a metal flat plate. For example, using a steel plate material, it is formed in a box shape with a bottom wall 42a, a pair of both side walls 42b and a pair of both end walls 42c along the longitudinal direction. Therefore, an opening 42d is formed on the surface facing the bottom wall 42a.

  A mounting piece 42e is formed diagonally on the side of the opening 42d on both end walls 42c so as to protrude in the outer peripheral direction. The case 42 is attached to the attachment member 41 by screwing the attachment piece 42e into the screw hole 41b of the attachment member 41 with an attachment screw (see FIG. 5).

  Further, locking claws 42f for locking the printed wiring board 44 to the case 42 are formed at a plurality of positions near the bottom wall 42a on both side walls 42b.

  The printed wiring board 44 is formed in a substantially rectangular shape, and a wiring pattern formed of copper foil is formed on the surface thereof. The printed wiring board 44 includes a switching element such as a capacitor, a winding component or a transistor, and an input / output Circuit components 45 necessary for configuring the power supply circuit 43 such as a terminal block are mounted.

  Such a power supply circuit 43 is housed in a case 42. Specifically, the peripheral edge of the printed wiring board 44 is locked and attached to the locking claws 42f of the case 42.

  As shown in FIGS. 4 and 5, the case 42 is disposed and mounted at a substantially central portion of the mounting member 41. Further, the mounting member 41 is configured such that a screw hole 41a as a mounting portion is mounted corresponding to the mounting boss 11.

  In this state, a predetermined insulation distance L in the width direction from both side walls 42b of the case 42 to the screw hole 41a as an attachment portion is secured. That is, since the mounting member 41 has insulation properties, the mounting member 41 is configured such that an insulating distance L from the metal mounting boss 11 at the ground potential to both side walls 42b of the metal case 42 is ensured. I have. More specifically, the insulation distance L is set to be at least ten and several millimeters, and the insulation distance L from the mounting boss 11 to each side wall 42b is set substantially equal.

  According to such a configuration, the mounting member 41 has an insulating property, and a predetermined insulating distance L can be secured between the case 42 and the mounting boss 11, so that the insulating performance can be improved. It becomes possible. Therefore, the insulation distance between the case 42 and the printed wiring board 44 or the metal component can be reduced, and for example, the charged portion of the printed wiring board 44, that is, the range in which the wiring pattern is formed is limited. In addition, it is possible to increase the degree of freedom in layout in forming a wiring pattern.

  Further, the case 42 is disposed substantially at the center of the mounting member 41, and the insulation distance L from the mounting boss 11 to the side walls 42b is set substantially equal. And the weight of the case 42 is substantially evenly applied. Therefore, even during long-term use, it is possible to suppress the deformation of the mounting member 41 and stably maintain the power supply circuit 43 in terms of strength.

  Further, since the power supply device 4 is mounted on the rear side of the mounting plate 12 formed in a substantially mountain shape, the power supply device 4 can be disposed by utilizing a concave space formed by the substantially mountain shape. The size of the apparatus body 1 can be reduced.

  For example, as shown in FIG. 6, the security light configured as described above is fixed by winding the rear wall portion of the apparatus main body 1 around a utility pole 6 erected on a road via a mounting band 5 and from above the ground. It is mounted at a height of about 5m.

  In the security light installed in this way, when the outdoors become dark, the switch of the automatic blinker is automatically turned on, power is supplied to the light source unit 3 from the power supply side via the power supply device 4, and the light emitting element 32 is turned on. . When the outdoors become bright, the switch of the automatic blinker is automatically turned off, and the light emitting element 32 is turned off.

  In the lighting state of the security light, light emitted from the light emitting element 32 passes through a lens member (not shown), passes through the translucent globe 2, and is emitted outward. More specifically, the light emitted from the light emitting element 32 is refracted laterally by the prisms formed on both side surfaces in the longitudinal direction of the globe 2 and is skipped in the traveling direction of the road to irradiate the traveling direction of the road. . In addition, the globe 2 is scattered right below from the central portion in the longitudinal direction, and irradiates directly below. Accordingly, the traveling direction and the direction directly below the road are effectively irradiated.

  On the other hand, while the light emitting element 32 is turned on, heat is generated from the light emitting element 32. This heat is transmitted to the substrate 31 and is conducted to the mounting plate 12 from the back surface side of the substrate 31 to be radiated.

  Also, for example, even if a high voltage due to a lightning surge or the like is applied to the apparatus main body 1, since the insulating distance L is ensured between the case 42 and the mounting boss 11 by the mounting member 41, the overvoltage is It is possible to prevent the circuit component 45 from being broken by being applied to the circuit component 45.

  As described above, according to this embodiment, the insulation performance can be improved, the circuit component 45 can be prevented from being destroyed by an overvoltage, and the degree of freedom of layout in forming a wiring pattern on the printed wiring board 44 can be improved. It is possible to increase.

  In addition, the deformation of the mounting member 41 having insulation properties is suppressed, and the power supply circuit 43 can be stably held in strength.

  Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 7 is an exploded perspective view mainly showing the power supply device 4, and FIG. 8 is a sectional view showing a security light. Note that the same or corresponding parts as those of the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

  In the present embodiment, the entire periphery of the power supply circuit 43 is surrounded by the bent insulating sheet 46. Then, the power supply circuit 43 surrounded by the insulating sheet 46 is accommodated in the case 42. The attachment member 41 is formed of a metal material.

  The insulating sheet 46 is formed of an electrical insulating material such as a polyester film, and is formed by bending one sheet into a box shape having six surfaces. The insulating sheet 46 has a bottom part 46a, both side parts 46b, both end parts 46c, and a top part 46d. Further, a bent step portion 46e is formed at a connection portion between the bottom surface portion 46a and both side surface portions 46b, and a flap 46f is connected to a front edge portion of the upper surface portion 46d.

  The power supply circuit 43 is accommodated in the box-shaped insulating sheet 46. In this case, as shown in FIG. 8, the periphery of the printed wiring board 44 is supported by the bent step 46e. Therefore, the power supply circuit 43 is housed in the case 42 with its entire circumference surrounded and covered by the six surfaces of the insulating sheet 46. For this reason, the power supply circuit 43 can ensure insulation performance with a simple configuration.

  Further, it is preferable to fill a gap formed between the outer peripheral surface of the insulating sheet 46 and the inner peripheral surface of the case 42 with an insulating resin R such as a silicone resin. This makes it possible to further enhance the insulation performance.

  As described above, according to the present embodiment, the insulation performance can be improved, and the breakdown of the circuit component 45 due to the overvoltage can be suppressed.

  Although the mounting member 41 in the present embodiment is formed of a metal material, it may be formed of a synthetic resin material having an insulating property as in the first embodiment. In this case, further improvement in insulation performance can be expected.

  The present invention is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the gist of the invention. For example, the light source is not limited to the LED, but may be an HID lamp, a fluorescent lamp, or the like.

  The lighting device is not limited to a device used outdoors, and may be a device used indoors. It is applicable to various lighting devices used outdoors or indoors.

DESCRIPTION OF SYMBOLS 1 ... Device main body, 2 ... Globe, 3 ... Light source part, 4 ... Power supply device, 31 ... Substrate, 32 ... Light emitting element (LED), 41 ... Mounting member, 41a mounting portion (screw hole), 42 case, 42a bottom wall, 42b side wall, 42c end wall, 43 power circuit, 44 printed wiring Substrate, 45: Circuit parts, 46: Insulation sheet, L: Insulation distance

Claims (1)

An apparatus main body having an opening, four mounting bosses erected on the back side with an interval in the short direction, and having the apparatus main body at a predetermined end on one end side in the longitudinal direction. A device body having a mounting portion for mounting the device;
A power supply device, wherein a plurality of circuit components are disposed in a boss standing space, which is a space formed by a mounting member for mounting the power supply device and the four mounting bosses in the device main body. A power supply device having a power supply circuit, the power supply device being disposed on the four mounting bosses;
A substantially mountain-shaped mounting plate having a pair of inclined surfaces extending farther in the short side direction of the device main body than between the bosses and extending in a rear side direction of the device main body from the boss tip is provided in the device. A light emitting element substrate mounted so as to be convex on the opening side of the main body and mounted on an inclined surface of the mounting plate;
Has,
A part of the light emitting element substrate is located on the back side of the device main body from the tip of the boss, and a mounting plate for mounting the power supply device and the light emitting element substrate overlaps when viewed from the device main body opening side. A lighting device characterized by the above-mentioned.

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