JP5411790B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture.

  Conventionally, a so-called embedded lighting fixture has been provided that is embedded and installed from the front side to the back side of the construction surface through an embedding hole formed in the construction surface (see, for example, Patent Document 1).

  The lighting fixture includes a plurality of lamps provided on the lamp body, a light source block that is housed in the lamp body and exposed from the opening, a power supply unit that supplies lighting power to the light source block, and an outer peripheral surface of the lamp body. And a fixed spring having elasticity facing the inner peripheral surface of the embedded hole. And each lighting spring is being fixed in the construction surface because each fixing spring press-contacts to the internal peripheral surface of an embedding hole.

  Here, as shown in FIG. 5, in the lighting fixture in which the two fixing springs 111 are provided on the outer peripheral surface of the cylindrical lamp body 101, the holding power for the lighting fixture is insufficient and the lighting fixture cannot be reliably fixed. There was a fear.

  In addition, as shown in FIG. 6, in the lighting fixture in which the three fixing springs 111 are provided on the outer peripheral surface of the cylindrical lamp body 101 at substantially equal intervals, the holding force for the lighting fixture is sufficiently secured by the three fixing springs 111. In addition, the lighting fixture can be fixed in a balanced manner.

  On the other hand, as shown in FIG. 7, when the lamp body 102 included in the lighting fixture has a square cylindrical shape, the three fixing springs 111 could not fix the lighting fixture in a well-balanced manner.

  Here, as a method of fixing the lighting fixture in a balanced manner when the lamp main body 102 has a substantially rectangular tube shape, a first fixing spring 111 is provided on each of the four wall portions 102 a constituting the lamp main body 102. A method is conceivable.

  In addition, as a second method for fixing the lighting fixture having the square tubular lamp body 102 in a well-balanced manner, as shown in FIG. 7, two fixing springs 111 are provided in parallel on a pair of wall portions 102a facing each other. A way to do this is conceivable.

Japanese Patent Laid-Open No. 10-083714

  However, in the first and second methods for fixing the lighting fixture having the square tubular lamp body 102 in a well-balanced manner, the four fixing springs 111 are used in both cases, and the holding force for the lighting fixture is excessive. It was a thing.

  This invention is made | formed in view of the said reason, The objective is to fix the lighting fixture which has a square cylindrical lamp main body with appropriate force with sufficient balance.

  In order to solve the above-described problems, a lighting fixture of the present invention is a lighting fixture that is embedded and installed from the front side to the back side of the construction surface through an embedding hole formed in the construction surface, and is a first that faces each other. A lamp body that has a pair of wall portions and a second pair of wall portions that face each other, is formed in a substantially rectangular tube shape, and passes through the embedded hole, and a light source unit that is disposed in the lamp body. A power supply for supplying lighting power to the light source unit, and a wall portion of the first pair of wall portions, respectively, and are in pressure contact with the inner peripheral surface of the embedded hole facing the inner peripheral surface. One fixed spring, a second fixed spring provided on one wall portion of the second pair of wall portions, opposite to the inner peripheral surface of the embedded hole, and in pressure contact with the inner peripheral surface, and the other A rib protruding from the wall and facing the inner peripheral surface of the embedded hole And wherein the door.

  In this lighting fixture, it is preferable that the rib has an inclined portion that inclines toward the inner peripheral surface side of the embedded hole as it goes from the front surface side to the rear surface side of the construction surface.

  Moreover, in this lighting fixture, it is preferable that the rib has an inclined portion that inclines toward the inner peripheral surface side of the embedded hole as it goes from the back side to the surface side of the construction surface.

  In this lighting fixture, it is preferable that the first fixing spring is provided on a straight line passing through the center of gravity of the lighting fixture.

  In this invention, there exists an effect that the lighting fixture which has a square tube-shaped lamp main body can be fixed with appropriate force with sufficient balance.

The perspective view of the lighting fixture in embodiment of this invention is shown. The disassembled perspective view of the lighting fixture in the same as the above is shown. The side view of the lighting fixture in the same as the above is shown. The principal part enlarged view of another form of the lighting fixture in the same as the above is shown. The schematic of the lighting fixture in a prior art example is shown. The schematic in another form of the lighting fixture same as the above is shown. The schematic in another form of the lighting fixture same as the above is shown.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment)
The lighting fixture of this embodiment is demonstrated using FIGS. In the following description, the direction perpendicular to the up / down / left / right direction is defined as the front / rear direction, with the up / down / left / right direction in FIG.

  The lighting fixture of this embodiment is a so-called embedded type lighting fixture as shown in FIGS. 1 to 3, and includes a mounting plate 1, a light source block 2, a lamp body 3, a fixing spring 4, and an airtight packing 5. And a heat dissipation block 6, a power supply unit 7, and a connector block 8.

  The mounting plate 1 is formed in a substantially cylindrical plate shape from a metal material having heat dissipation, such as aluminum, and a cylindrical concave portion (not shown) is formed on the lower surface. Further, the mounting plate 1 is formed with an insertion hole 1a that is inserted from the center of the upper surface to the center of the lower surface.

  The mounting plate 1 is formed with a plurality of cutout portions 11 cut out in a substantially semicircular shape on the outer peripheral portion of the upper surface. Further, the mounting plate 1 is inserted through the cutout portion 11 in the vertical direction. A hole 11a is formed.

  The light source block 2 includes an LED substrate (light source unit) 21 on which LEDs are mounted, a reflecting plate 22 that houses the LED substrate 21, and a transparent plate 23 that is attached to the reflecting plate 22.

  The LED substrate 21 is formed in a disk shape in which an LED (not shown) is mounted on the lower surface and a wiring pattern is formed, and an insertion hole 21a is formed at the center thereof.

  The reflection plate 22 is formed in a cylindrical shape having an upper surface opened from a white material, and a cylindrical protrusion 221 having a screw hole 221a formed in an inner diameter portion is formed from the approximate center of the bottom surface toward the opening. . In addition, an annular rib 222 is formed from the bottom surface of the reflecting plate 22 so as to surround the periphery of the protrusion 221.

  Then, with the LED mounting surface (lower surface) of the LED substrate 21 facing the bottom surface of the reflecting plate 22, the protrusion 221 of the reflecting plate 22 passes through the insertion hole 21a of the LED substrate 21, and the LED substrate 21 reflects. It is placed on the rib 222 of the plate 22. Here, on the lower surface of the reflection plate 22, an insertion hole 22 a is formed at a location facing the LED of the LED substrate 21.

  Subsequently, the reflection plate 22 on which the LED substrate 21 is placed is housed in a recess formed on the lower surface of the mounting plate 1.

  Then, the screw 78 is inserted through the insertion hole 1 a of the mounting plate 1 and fitted into the screw hole 221 a of the protrusion 221 in the reflection plate 22. Further, the reflector 75 is attached to the attachment plate 1 by inserting the screws 75 through the plurality of insertion holes 1 b formed in the vicinity of the upper surface periphery of the attachment plate 1 and fitting into the screw holes 22 c formed at the upper end of the reflection plate 22. Fixed to the screw. That is, the LED substrate 21 is accommodated between the bottom surface of the concave portion of the mounting plate 1 and the reflection plate 22.

  The transparent plate 23 is formed in a cylindrical shape whose upper surface is opened from a translucent material, and the inner surface of the peripheral wall 23a is fitted into a step portion 22b formed on the peripheral edge of the lower surface of the reflecting plate 22. Fixed.

  The lamp body 3 is formed in a substantially rectangular tube shape having both ends opened by aluminum die casting and is coated with white paint. The lamp body 3 may be formed of a white resin. And the flange part 3a which protrudes outward is formed in the lower end of the outer peripheral surface in the lamp main body 3, and the screw hole 3b along the up-down direction is formed in the location which opposes the insertion hole 11a of the attachment plate 1 in an upper end surface. Is formed. Here, the lamp body 3 includes a pair of wall portions (first wall portions) 30A facing each other in the left-right direction and a pair of wall portions (second wall portions) 30B facing each other in the front-rear direction. The

  The lamp body 3 is formed with a partition wall 31 that divides the inner diameter portion in the vertical direction at the inner diameter portion, and a substantially rectangular through hole 31a is formed in the partition wall. Further, the lamp body 3 has an inner diameter portion that is lower than the partition wall 31 and is expanded in diameter toward the opening.

  A groove 32 that is long in the vertical direction is formed on the front side of the pair of wall portions 30 </ b> A, and a guide piece 33 is formed on the lower end side of the groove 32. The inner surface of the guide piece 33 comes into contact with the side wall of the groove portion 32 and the wall portion 30A.

Furthermore, among the pair of walls 30B, the approximate center of the rear wall portion 30B _2, the groove 32 and the guide piece 33 is provided as well.

Also, among the pair of walls 30B, in front of the wall portion 30B _1, (3 in this embodiment) multiple ribs 30a is in the left-right direction are arranged in parallel.

  The rib 30a has an inclined surface (inclined portion) 30b that is inclined forward as it goes downward from above, and is formed in a substantially triangular plate shape.

  An annular packing 311 is placed on the upper surface of the partition wall 31 of the lamp body 3, and the light source block 2 (transparent plate 23) is placed on the packing 311. Then, the lamp body 3 is screwed and fixed to the mounting plate 1 by inserting the screw 33 through the insertion hole 11 a of the mounting plate 1 and fitting into the screw hole 3 b of the lamp body 3.

  The fixed spring 4 is formed in a substantially L shape by bending a substantially strip-shaped metal plate, and the base 41 fixed to the lamp body 3 and the lower end of the base 41 are bent outward. And a spring portion 42.

  In the base 41, a substantially U-shaped hole 41a is formed on the tip (upper end) side, and a positioning piece 41b in which the tip (upper end) is a free end is formed in the hole 41a. Here, the positioning piece 41b is formed with a claw piece 41c that is bent inwardly (on the side of the lamp body 3) at the tip thereof.

  The base 41 is inserted between the bottom surface of the groove portion 32 and the guide piece 33, and the claw piece 41 c is fitted into a positioning hole (not shown) formed on the bottom surface of the groove portion 32, so that the fixed spring 4 is It is positioned and fixed to the lamp body 3.

  Further, the spring portion 42 has elasticity by forming a curved portion 42a that is curved in a substantially S shape in the thickness direction on the base end side (base portion 41 side).

  The airtight packing 5 is formed in a substantially annular shape, and the lantern body 3 is inserted through the inner diameter portion thereof, and is interposed between a flange portion 3 a in the lamp body 3 and a construction surface 9 described later.

  The heat dissipating block 6 is made of a metal material such as aluminum or copper, and is provided in a substantially half region of the top surface of the mounting plate 1 (in this embodiment, the back half of the top surface). The heat dissipation block 6 may be formed integrally with the mounting plate 1. The heat radiating block 6 includes a base plate 61 that is formed in a substantially rectangular plate shape and substantially bisects the upper surface of the mounting plate 1, and a plurality of heat radiating fins 62 that are formed on the rear surface of the base plate 61.

  The base plate 61 has a plurality of heat dissipating ribs 611 extending in the vertical direction on the front surface of the base plate 61. The plurality of heat dissipating ribs 611 increases the strength of the base plate 61 and increases the surface area. Has improved. In addition, screw holes 611a are respectively formed in the heat dissipating ribs 611A located at both ends in the left-right direction among the plurality of heat dissipating ribs 611 from the upper end surface downward.

  In addition, a substantially rectangular cylindrical insertion hole 63 is formed at the lower end of each end in the left-right direction of the base plate 61, with the vertical direction being the axial direction.

  The power supply unit 7 includes a power supply board 71 on which a power supply circuit for supplying lighting power to the LED board 21 is mounted, a board case 72 that houses the power supply board 71, and between the power supply board 71 and the board case 72. It is comprised from the insulating sheet 73 interposed.

  The power supply board 71 has a tall component mounted on the lower surface.

  The substrate case 72 is formed in a substantially rectangular box shape from a case main body 721 on which the power supply substrate 71 is arranged and a case cover 722 fixed to the mounting plate 1.

  The case body 721 includes a rectangular top plate 721a, a side plate 721b extending downward from the front end of the top plate 721a, and a side plate 721c extending downward from both front and rear ends of the top plate 721a. The And the protrusion piece 721e is formed toward the downward direction from the rear-end part of the side plate 721c.

  The projecting piece 721e is gradually narrowed from the upper end toward the lower end, and the lower end side is formed with a constant width. Thereby, the strength of the protruding piece 721e with respect to the stress that the upper end side receives when being inserted into and removed from the insertion hole 63 is increased.

  An insulating sheet 73 is provided in the case main body 721 along the inner surface of the case main body 721. A heat conductive resin (not shown) is filled between the upper surface of the power supply substrate 71 and the insulating sheet 73. In other words, the upper surface of the power supply substrate 71 is in surface contact with the top plate 721a through the heat conductive resin and the insulating sheet 73 over the entire surface. Then, the screw 74 is inserted through the insertion hole 71a formed at the corner of the power supply board 71 and fitted into the screw hole 721d formed in the top plate 721a, so that the power supply board 71 is fixed to the top plate 721a by screwing. Is done.

  The case cover 722 is formed in a substantially U-shape from a substantially rectangular bottom plate 722a and side plates 722b extending upward from both left and right ends of the bottom plate 722a. The case cover 722 is disposed on the mounting plate 1 adjacent to the heat dissipation block 6.

  An insertion hole (not shown) is formed in the approximate center of the bottom plate 722a, and the screw 79 is inserted through the insertion hole and fitted into the screw hole 1c formed on the upper surface of the mounting plate 1, whereby the case cover 722 is inserted. Is fixed to the mounting plate 1.

  Then, the case body 721 and the case cover 722 are fitted together with the inner surface of the side plate 722b facing the outer surface of the side plate 721c. At that time, the side plate 721b of the case main body 721 is inserted into a substantially rectangular notch 722c formed at the front end of the bottom plate 722a.

  At that time, the projecting piece 721e formed on the case main body 721 is inserted and fitted into the inner diameter portion of the insertion hole 63 provided in the heat dissipation block 6 in a state of being in contact with the heat dissipation rib 611A and the base plate 61.

  Furthermore, the top plate 721a of the case main body 721 has insertion holes 721f formed in the vicinity of the rear corners, and screws 76 that are inserted through the insertion holes 721f and fitted into the screw holes of the heat radiation rib 611A. The case body 721 is fixed to the heat dissipation block 6 with screws.

  The connector block 8 includes a connector main body 81 disposed on the side plate 721 b of the case main body 721 and a connector cover 82 that covers the connector main body 81.

  The connector main body 81 is formed in a substantially rectangular parallelepiped shape, an input terminal portion to which a power supply connector (power supply wire) (not shown) is connected is provided on the front surface, and an output terminal portion 811 is provided on the right side surface. Further, a pair of positioning pins (not shown) are erected from the rear surface of the connector main body 81. In addition, a pair of engaging protrusions 81a are formed at the rear end portions of the left and right side surfaces of the connector main body 81 so that the front end portion is widened and protrudes toward the rear surface side (substrate case 72).

  The engagement protrusion 81a is inserted into and engaged with the engagement hole 721i formed in the side plate 721b, and the pair of positioning pins are inserted into the pair of insertion holes 721g formed in the side plate 721b. 81 is positioned on the case body 721.

  Subsequently, the screw 77 is inserted into an insertion hole 721h formed in the side plate 721b and fitted into a screw hole (not shown) formed in the rear surface of the connector main body 81, so that the connector main body 81 is screwed and fixed to the case main body 721. Is done.

  Also, one end of a lead wire (not shown) is connected to the output terminal portion 811, the lead wire passes through a substantially circular notch 721 j formed on the side edge of the side plate 721 b, and the other end of the lead wire is the power supply board 71 is connected to the input terminal.

  The connector cover 82 is formed in a substantially rectangular box shape with a rear surface opened from a resin material or the like, and is covered with the connector main body 81. Here, a pair of insertion holes 82 a are formed on the front surface of the connector cover 82 at locations facing the input terminal portion of the connector body 81. In addition, a connector insertion port 82b made of an annular wall portion surrounding the pair of insertion holes 82a protrudes from the front surface of the connector cover 82.

  Then, a power supply connector (power supply wire) is inserted into the connector insertion opening 82b and the power supply plug is connected to the input terminal portion, so that power is supplied to the input terminal portion of the power supply board 71 via the connector body 81. The power supply board 71 outputs lighting power to the LED board 21. As a result, the LED mounted on the LED substrate 21 is turned on.

  As shown in FIG. 1, when the lighting fixture having the above-described configuration is installed in the construction surface 9, first, the spring portion 42 of each fixed spring 4 is bent toward the lamp body 3. Then, the lighting fixture is inserted from the distal end side of the spring portion 42 into the rectangular embedded hole 91 formed in the construction surface 9.

  In addition, the rib 30a is formed with an inclined surface 30b that is inclined forward as it goes downward from above. Therefore, when the lighting fixture is inserted into the embedded hole 91, the opening peripheral edge portion of the embedded hole 91 slides on the inclined surface 30b of the rib 30a, and the lighting fixture can be more easily inserted into the embedded hole 91. .

  And the curved part 42a of the fixed spring 4 provided in each surface of a pair of wall part 30A press-contacts to the inner wall 91b of the embedding hole 91, and can fully acquire the holding force of the left-right direction with respect to a lighting fixture. it can.

Further, the curved portion 42a of the fixed spring 4 provided on the wall 30B ₂ are, by pressing the inner wall 91b of the embedded hole 91, the luminaire is energized forward (leftward in FIG. 3), the rib 30a The lower end portion of the inclined surface 30 b is in line contact with the inner wall 91 b of the embedded hole 91. Here, since the rib 30a is in line contact with the inner wall 91b, the contact pressure with respect to the inner wall is increased. Therefore, fixing spring 4 provided on the wall 30B ₂ are embedded and pressed against the inner wall 91b of the hole 91, further, the ribs 30a are embedded by line contact with the inner wall 91b of the hole 91, the front-rear direction with respect to the luminaire A sufficient holding force can be obtained.

  Therefore, since the lighting fixture of this embodiment can obtain sufficient holding force in the front-rear and left-right directions, it is embedded and fixed in a balanced manner with an appropriate force.

Moreover, the lighting fixture of this embodiment is the power supply part 7 which is a heavy article in the component of the said lighting fixture.
Is disposed on the front side, the center of gravity is closer to the front. Here, in the lighting fixture of this embodiment, the fixing springs 4 respectively provided on the pair of wall portions 30A are provided at locations closer to the center of gravity closer to the front than the center of the wall portions 30A. More specifically, the fixed springs 4 provided on the pair of wall portions 30A are positioned on a straight line passing through the center of gravity in the opposing direction of the pair of wall portions 30A. Thereby, a lighting fixture is fixed with a better balance.

  Moreover, in this embodiment, it has the inclined surface 30b which inclines ahead as the rib 30a goes downward from the upper direction. However, instead of forming the inclined portion 30b, as shown in FIG. 4, an inclined surface 30c that is inclined forward (leftward in FIG. 4) from the bottom to the top may be formed on the rib 30a. In this case, the inclined surface 30c is in line contact with the inner wall 91b of the embedded hole 91, and an upward force is applied to the lighting fixture. That is, since the force opposite to the direction of gravity acts on the lighting fixture, the lighting fixture can be more stably fixed.

2 Light source block 3 Lamp body 4 Fixing spring 6 Heat dissipation block 7 Power source 9 Construction surface 21 LED substrate (light source unit)
30a Rib 30b Inclined surface (inclined part)
91 Embedded hole

Claims (4)

It is a lighting fixture that is embedded and installed from the surface side of the construction surface to the back side through an embedding hole formed in the construction surface,
A lamp body having a first pair of wall portions facing each other and a second pair of wall portions facing each other, formed in a substantially rectangular tube shape, and penetrating the embedded hole;
A light source unit disposed in the lamp body;
A power supply for supplying lighting power to the light source unit;
A first fixed spring provided on each wall portion of the first pair of wall portions, facing the inner peripheral surface of the embedded hole and in pressure contact with the inner peripheral surface;
A second fixed spring provided on one wall portion of the second pair of wall portions, opposed to the inner peripheral surface of the embedded hole and pressed against the inner peripheral surface, and protruded from the other wall portion; And a rib facing the inner peripheral surface of the embedded hole.   The lighting apparatus according to claim 1, wherein the rib has an inclined portion that inclines toward the inner peripheral surface side of the embedded hole from the front surface side to the rear surface side of the construction surface.   The lighting apparatus according to claim 1, wherein the rib has an inclined portion that inclines toward the inner peripheral surface side of the embedded hole from the back surface side to the front surface side of the construction surface. The lighting fixture according to any one of claims 1 to 3, wherein the first fixing spring is provided on a straight line passing through the center of gravity of the lighting fixture.

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