JP2020061264A - Wall-mounted lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wall-mounted lighting fixture which can be made thin while ensuring fire safety.
A wall-mounted lighting fixture (1) is mounted on a wall of a bathroom, and includes a substrate (2), a case (4) housing the substrate (2), a globe attached to the case (4), and an incombustible part (8). ing. A plurality of light sources 31 are arranged on the surface 21 of the substrate 2 on the globe side. A terminal block 32 and power supply circuit components 33 to 36 are arranged on the back surface of the substrate 2. The non-combustible portion 8 covers the power supply circuit components 33 to 36, and has three surfaces, that is, a rectangular plate-shaped facing surface 81 and a pair of intersecting surfaces 82 standing from both ends in the width direction of the facing surface 81. It is configured. When the wall-mounted lighting fixture 1 is mounted on the wall, the non-combustible portion 8 and the substrate 2 surround the front, rear, left, and right of the power circuit components 33 to 36, and above and below the power circuit components 33 to 36. Is open.
[Selection diagram] Fig. 4

Description

  The present invention relates to a wall-mounted lighting fixture.

  Patent Document 1 discloses a wall-mounted lighting fixture that is mounted on a wall of a bathroom or the like. This wall-mounted lighting fixture includes a light source unit in which electronic components such as LEDs are mounted on a substrate, a case that houses the light source unit, and a globe that is attached to the case.

JP, 2017-84510, A

  In the above-described conventional wall-mounted lighting fixture, there is a demand for further thinning (reducing the amount of protrusion from the wall). However, the power circuit component among the electronic components mounted on the board may be ignited due to high temperature if heat dissipation is insufficient. The fire safety was secured by keeping a sufficient distance to, and it was not easy to make it thinner.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a wall-mounted lighting fixture that can be thinned while ensuring fire safety.

  The present invention includes a substrate, a light source and a power supply circuit component mounted on the substrate, a case that accommodates the substrate, and a glove attached to the case, and is attached to a wall with a vertical direction defined. In the wall-mounted lighting fixture, the light source is arranged on the surface of the substrate on the side of the globe, the power circuit component is arranged on the back surface of the substrate opposite to the globe, and the non-combustible covering the power circuit component. A non-combustible portion, the non-combustible portion having three surfaces, that is, a facing surface that faces the back surface of the substrate and a pair of intersecting surfaces that intersect with the substrate. It is characterized in that it surrounds the front, back, left and right of the component, and that the upper and lower parts of the power circuit component are open.

  According to the present invention, convection can be generated from the lower side to the upper side of the power supply circuit component by the non-combustible portion having the above-described configuration, and the heat dissipation efficiency of the power circuit component can be improved. Therefore, it is possible to prevent an excessive temperature rise of the power supply circuit components. Even in the unlikely event that the power supply circuit components ignite, the incombustible portion and the substrate surround the front, rear, left, and right of the power circuit components, so that the case can be prevented from spreading fire. As a result, while ensuring fire safety, the distance from the substrate to the case can be made narrower (thinner) than conventional products.

It is a perspective view of the wall-mounted lighting fixture concerning 1st Embodiment of this invention. FIG. 2 is an exploded view of the wall-mounted lighting fixture of FIG. 1. It is a figure which shows the state in which the noncombustible part was piled up on the case of FIG. It is a figure which shows the state with which the board | substrate was accommodated in the case of FIG. It is an enlarged view of the board | substrate of FIG. It is a figure which shows the back surface of the board | substrate of FIG. It is explanatory drawing explaining the heat convection in the lighting fixture for wall mounting of FIG. It is a perspective view of the case which comprises the lighting fixture for wall mounting concerning 2nd Embodiment of this invention. It is a figure which shows the state by which the sheet-shaped incombustible part was affixed to the case of FIG. It is a figure which shows the state with which the board | substrate was accommodated in the case of FIG.

  The "wall-mounted lighting fixture" according to the first embodiment of the present invention will be described with reference to FIGS. The wall-mounted lighting fixture 1 shown in FIG. 1 is used by being mounted on a wall 10 of a bathroom. As shown in FIGS. 2 and 6, the wall-mounted lighting fixture 1 includes a board 2, electronic components mounted on the board 2, a case 4 for housing the board 2, and a globe 5 attached to the case 4. It is provided with packings 6 and 7 and an incombustible portion 8. Further, the packings 6 and 7 are used for the purpose of enhancing the sealing property because they can be attached to the bathroom.

  The board 2 is a printed board on which a wiring pattern is formed, and is formed in a circular plate shape. As shown in FIGS. 2 and 5, a plurality of light sources 31 are arranged on the surface 21 of the substrate 2 on the globe 5 side. The light source 31 in this example is an LED. As shown in FIG. 6, a terminal block 32 and power supply circuit components 33 to 36 are arranged on the back surface 22 of the substrate 2 opposite to the globe 5. The terminal block 32 electrically connects the electric wire arranged on the back side of the wall 10 and the substrate 2. In addition, a positioning hole 23 and a screw insertion hole 24 are formed in the substrate 2.

  In addition, in the wall-mounted lighting device 1, the vertical direction at the time of wall mounting is determined by the direction of the wire connection mechanism of the terminal block 32. That is, the wall-mounted lighting fixture 1 is designed so that the electric wire is drawn out downward from the terminal block 32, and the side from which the electric wire is drawn out is defined as “down” and the opposite side is defined as “upper”.

  The case 4 is made of a synthetic resin, and as shown in FIGS. 2 and 3, a circular plate-shaped facing portion 41 that is stacked on the wall 10, and a cylindrical portion that is erected from the facing portion 41 on the opposite side to the wall 10. 42, a boss 43 for positioning the substrate 2, a screw mounting portion 44 for fixing the substrate 2, a screw insertion hole 45 penetratingly formed in the facing portion 41, and a convex portion formed in the facing portion 41. 46, a pair of positioning parts 48 for positioning the incombustible part 8, and a locking part 49 for locking the globe 5.

  As shown in FIG. 4, the board 2 is positioned in the case 4 by inserting the boss 43 into the positioning hole 23, and the screw 9 is inserted into the screw insertion hole 24 and screwed into the screw attachment portion 44. As a result, it is fixed to the case 4. The substrate 2 is placed inside the cylindrical portion 42 and is housed in the case 4 with the back surface 22 facing the facing portion 41.

  The convex portion 46 is formed to be convex from the facing portion 41 to the side opposite to the wall 10. An opening 47 communicating with the outside of the case 4 is formed in the protrusion 46. The terminal block 32 is positioned in the opening 47 when the substrate 2 is accommodated in the case 4.

  The pair of positioning portions 48 project from the facing portion 41 to the side opposite to the wall 10. The pair of positioning portions 48 position the non-combustible portion 8 by positioning the non-combustible portion 8 between them. In addition, the pair of positioning portions 48 are arranged at intervals in the vertical direction.

  The case 4 is fixed to the wall 10 by screwing the screw inserted into the screw insertion hole 45 into the wall 10.

  The globe 5 covers the light source 31 and diffuses the light emitted from the light source 31, and is made of a translucent synthetic resin. The globe 5 includes a circular plate-shaped front portion 51 that positions the substrate 2 between the facing portion 41, a cylindrical side portion 52 that stands from the outer edge of the front portion 51, and a locking portion 49 of the case 4. And a lock receiving portion 59 for stopping. The side portion 52 of the globe 5 is placed on the outer peripheral surface of the cylindrical portion 42 of the case 4, and the engagement portion 49 is engaged with the engagement receiving portion 59, whereby the globe 5 is fixed to the case 4. Further, in this example, the case 4 and the globe 5 form a closed space, and the substrate 2 and the electronic component are arranged in the closed space.

  The packing 6 is formed in an annular shape and is attached to the outer peripheral surface of the cylindrical portion 42 of the case 4. The packing 6 seals between the cylindrical portion 42 of the case 4 and the side portion 52 of the globe 5.

  The packing 7 is formed in a sheet shape and is attached to the outer surface of the facing portion 41 of the case 4. The packing 7 seals between the facing portion 41 and the wall 10.

  The non-combustible portion 8 covers the power circuit components 33 to 36, and has three surfaces, that is, a rectangular plate-shaped facing surface 81 and a pair of intersecting surfaces 82 that are erected from both ends of the facing surface 81 in the width direction. It is configured. Notches 83 are formed at both ends of the facing surface 81 in the longitudinal direction. In addition, in this example, the non-combustible portion 8 is made of a metal separate from the case 4, that is, a non-combustible material. In addition to this, the "incombustible portion" of the present invention may be configured by attaching an aluminum tape, a copper tape, mica or the like to a resin or the like having the same shape as the incombustible portion 8.

  As shown in FIG. 3, the incombustible portion 8 is positioned in the case 4 by overlapping the facing surface 81 with the facing portion 41 of the case 4 and positioning the positioning portions 48 in the notches 83. In this state, the substrate 2 is fixed to the case 4 as shown in FIG. In the state shown in FIG. 4, the facing surface 81 faces the back surface 22 of the substrate 2, and the pair of intersecting surfaces 82 intersects the substrate 2.

  Further, in this example, since the substrate 2 is fixed to the case 4, the substrate 2 comes into contact with the tips of the pair of intersecting surfaces 82. By thus sandwiching the non-combustible portion 8 between the facing portion 41 and the substrate 2, the non-combustible portion 8 is held by the case 4. As described above, in this example, since the noncombustible portion 8 can be held in the case 4 without using screws or the like, the number of parts can be reduced and the assembly can be facilitated.

  As shown in FIG. 1, when the wall-mounted lighting fixture 1 is mounted on the wall 10, the non-combustible portion 8 and the substrate 2 surround the front and rear and left and right of the power circuit components 33 to 36, and the power circuit configuration. The upper and lower parts of the parts 33 to 36 are open. That is, the wall-mounting lighting fixture 1 is mounted on the wall 10 in a direction in which the longitudinal direction of the non-combustible portion 8 matches the vertical direction. Further, the lighting fixture 1 for wall mounting has a distance from the substrate 2 to the facing portion 41 smaller than that of the conventional product, and is thinned as a whole (the amount of protrusion from the wall 10 is small). .

  The “front and rear of the power supply circuit components 33 to 36” are the front and the rear of the power supply circuit components 33 to 36 in the thickness direction of the facing surface 81. The “left and right of the power supply circuit components 33 to 36” are the left and right sides of the power supply circuit components 33 to 36 in the width direction of the facing surface 81. The “above and below the power supply circuit components 33 to 36” means above and below the power supply circuit components 33 to 36 in the longitudinal direction of the facing surface 81.

  The power supply circuit components 33 to 36 become heat sources by being energized. In this respect, in the present invention, since the upper and lower sides of the power supply circuit components 33 to 36 are open, convection can be generated from the lower side to the upper side of the power supply circuit components 33 to 36, and the power circuit configuration The heat dissipation efficiency of the components 33 to 36 can be improved. Therefore, it is possible to prevent an excessive temperature rise of the power supply circuit components 33 to 36. Even if the power supply circuit components 33 to 36 are ignited, the incombustible portion 8 and the substrate 2 surround the front and rear and right and left of the power supply circuit components 33 to 36, so that the case 4 can be prevented from spreading fire. . Further, above and below the power supply circuit components 33 to 36, a sufficient distance is provided from the power supply circuit components 33 to 36 to the case 4, so that it is possible to prevent the case 4 from spreading fire.

  Further, in this example, since the airtightness is enhanced for bathroom installation, the substrate 2 and the electronic component are arranged in the closed space. If the non-combustible part 8 is not used, heat will accumulate in the upper part of the wall-mounted lighting fixture 1. In this respect, in this example, by using the non-combustible portion 8, it is possible to generate convection indicated by arrows A and B in FIG. 7, that is, convection that circulates in the entire wall-mounted lighting fixture 1. The heat dissipation efficiency of the entire instrument 1 can be improved.

  As described above, according to the present invention, it is possible to provide the wall-mounted lighting fixture 1 that can be made thinner while ensuring fire safety.

  The "wall-mounted lighting fixture" according to the second embodiment of the present invention will be described with reference to FIGS. 8 to 10, the same components as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

  The wall-mounted lighting device of this example is different from the first embodiment in the configuration of the case 104 shown in FIG. 8 and the incombustible portion 108 shown in FIG. 9, and is otherwise the same as that of the first embodiment. ing.

  The case 104 has a pair of intersecting portions 142 standing upright from the facing portion 41. The pair of intersecting portions 142 are formed in the same shape and at the same position as the pair of intersecting surfaces 82 of the incombustible portion 8 of the first embodiment.

  The non-combustible portion 108 is formed of a sheet made of a non-combustible material, and this sheet is fixed to the pair of intersecting portions 142 and the portion 141 of the facing portion 41 located between the pair of intersecting portions 142. In this example, the non-combustible portion 108 is composed of a sheet in which an adhesive is applied to one surface of an aluminum film. The portion of the sheet attached to the portion 141 forms the facing surface 181 of the non-combustible portion 108, and the portion of the sheet attached to the pair of intersecting portions 142 forms the pair of intersecting surfaces 182 of the non-combustible portion 108. Is made.

  As shown in FIG. 10, when the substrate 2 is fixed to the case 104, the facing surface 181 faces the back surface 22 of the substrate 2, and the pair of intersecting surfaces 182 intersects the substrate 2. The non-combustible portion 108 of this example as described above has the same effects as the non-combustible portion 8 of the first embodiment.

  It should be noted that the above-described embodiment merely shows a typical form of the present invention, and the present invention is not limited to the embodiment. That is, various modifications can be made without departing from the gist of the present invention.

1 Lighting Equipment for Wall Mounting 2 Substrate 4,104 Case 5 Globe 8,108 Incombustible Part 31 Light Source 33-36 Power Circuit Component 81,181 Opposing Face 82,182 Crossing Face

Claims (6)

A wall-mounted illumination that includes a substrate, a light source and a power supply circuit component mounted on the substrate, a case that accommodates the substrate, and a globe that is attached to the case, and is mounted on a wall in which the vertical direction is determined. In the equipment,
The light source is arranged on the surface of the substrate on the globe side, and the power circuit component is arranged on the back surface of the substrate opposite to the globe,
A non-combustible portion that covers the power circuit components,
The non-combustible portion is composed of three surfaces, a facing surface facing the back surface of the substrate and a pair of intersecting surfaces intersecting with the substrate,
The wall-mounted lighting fixture, wherein the non-combustible portion and the substrate surround the front and rear and right and left of the power circuit component, and the upper and lower parts of the power circuit component are open. The wall-mounted lighting fixture according to claim 1, wherein the case and the globe form a closed space. The said light source is LED. The wall-mounted lighting fixture of Claim 1 or 2 characterized by the above-mentioned. The wall-mounted lighting fixture according to any one of claims 1 to 3, wherein the non-combustible part is made of a non-combustible material separate from the case. The wall-mounted lighting fixture according to claim 4, wherein the non-combustible portion is held by the case by being sandwiched between the case and the substrate. The non-combustible part is made of a sheet made of non-combustible material,
The case has a facing portion that faces the back surface of the substrate, and a pair of intersecting portions that intersect the substrate,
The wall-mounted lighting device according to any one of claims 1 to 3, wherein the sheet is fixed to the facing portion and the pair of intersecting portions.

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