JP2012146496A - Led lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting fixture, in which holding force for holding a light source unit and a heat radiating plate to a frame body is increased.SOLUTION: The LED lighting fixture 1 is provided with a fixture body 10 and a lighting unit 20 installed on the fixture body 10 using a kick spring 60. The lighting unit 20 is provided with a frame body 21, a light source unit 30 supported by the frame body 21, and a heat radiating plate 37. A spring retainer 24 to which a coil part 61 of the kick spring 60 is connected through a connecting fitting 65 is installed on the frame body 21. The light source unit 30 has an LED 31 arranged on the front side, is mounted on the frame body 21 with its front side facing outside, and has the heat radiating plate 37 installed on the rear side. A locking piece 27 is installed in the spring retainer 24 holding the kick spring 60, and is hooked to a locked piece 37a of the heat radiating plate 37 in the state the spring retainer 24 is installed on the frame body 21 mounted with the light source unit 30 and the heat radiating plate 37.

Description

  The present invention relates to an LED lighting apparatus.

  Conventionally, the lighting fixture used in the state embedded in the ceiling is provided (for example, refer patent document 1).

  The lighting fixture disclosed in Patent Document 1 includes a box-like fixture body with one side opened, a frame attached to an opening portion of the fixture body, and a translucent panel held by the frame.

  The instrument body is embedded in an embedding hole provided in the ceiling with the opening facing downward. A socket for mounting a fluorescent lamp is attached inside the instrument body. In addition, a ballast for turning on the fluorescent lamp is attached to the instrument body.

  The frame body is made of metal, and includes a pair of side frame portions arranged substantially in parallel, and a plate-like louver portion that is fixed between the side frame portions and controls light distribution.

  The translucent panel is made of a milky white translucent material, and is attached to the frame while being placed on the upper side of the louver portion.

  And the frame holding the translucent panel locks the V-shaped kick springs respectively attached to the pair of side frame portions to spring receivers respectively provided on two mutually opposing inner walls of the instrument body, It can be attached to the instrument body.

JP-A-8-321211

  In recent years, LEDs (light-emitting diodes) with long life and low power consumption are becoming popular as light sources to replace fluorescent lamps, and use of LEDs as light sources is also being considered for the above-described ceiling-mounted lighting fixtures. . By the way, when the light source is an LED, it is desirable that the light source unit that houses the LED substrate on which the LED is mounted is held by the frame so that the irradiation light from the LED can be efficiently taken out to the outside. Further, since the luminous efficiency of the LED decreases when the temperature becomes high, a heat sink made of metal (for example, an aluminum alloy) is generally attached to the light source unit in order to dissipate the heat generated by the LED. The plate is also held on the frame together with the light source unit. Therefore, in the ceiling-mounted lighting fixture using LEDs, in addition to the light-transmitting panel, a light source unit and a heat sink that are heavier than the light-transmitting panel are held by the frame. In the conventional lighting fixture, with the translucent panel mounted on the frame, a holding piece formed by bending a part of the frame is applied to the upper surface of the translucent panel, and the translucent panel is pressed by pressing the upper surface of the translucent panel. Holding the panel. With such a holding structure, when a heavy light source unit or heat sink is held on the frame, if the frame is suspended only by one kick spring during construction or maintenance, the light source unit or heat sink The holding piece may be deformed by the weight of the plate and the holding force may be weakened.

  This invention is made | formed in view of the said subject, The place made into the objective is providing the LED lighting fixture which raised the holding power which hold | maintains a light source unit and a heat sink to a frame.

  In order to solve the above problems, an LED lighting apparatus of the present invention includes an apparatus main body, a frame, a light source unit, a heat sink, a kick spring, a spring holding body, and a locking portion. The instrument body is provided with an opening on one side and the opening is on the lower side. The frame is attached to the opening of the instrument body. The light source unit is mounted on the frame body with LEDs arranged on the front side and the front side facing outward. The heat sink is provided on the back surface of the light source unit. The kick spring is formed into a V shape by bending the spring wire, and both arm portions extending from the center portion are expanded outward in a free state, and the spring receiver provided on the instrument body The arm is supported. The central portion of the kick spring is connected to the spring holder. The locking portion is provided on the spring holding body, and is hooked on the locked portion included in the heat radiating plate in a state where the spring holding body is attached to the frame on which the light source unit and the heat radiating plate are mounted.

  In this LED lighting apparatus, the locked portion may be formed by bending substantially the entire edge of the heat sink, and the locking portion may be formed by bending substantially the entire edge of the spring holder. preferable.

  In this LED lighting apparatus, it is also preferable that the spring holder is formed of a material having thermal conductivity.

  ADVANTAGE OF THE INVENTION According to this invention, the light source unit and heat sink which are heavy objects can be hold | maintained firmly with respect to a frame.

It is a side view which can partly fracture | rupture the LED lighting fixture of this embodiment. It is construction explanatory drawing same as the above. (A) is a top view same as the above, (b) is a bottom view partially broken. It is a side view which fractures | ruptures partially viewing the same from the other direction. It is an external appearance perspective view of the lighting unit which comprises the same. It is a disassembled perspective view of the lighting unit which comprises the same. It is a disassembled perspective view of the light source unit which comprises the same.

  The LED lighting fixture of this embodiment is demonstrated with reference to FIGS. In the following description, unless otherwise specified, the vertical and horizontal directions are defined in the direction shown in FIG. 1, and the direction perpendicular to the paper surface of FIG.

  As shown in FIGS. 1 to 4, the LED lighting fixture 1 includes a fixture main body 10 and a lighting unit 20 as main components.

  The instrument main body 10 is formed of a steel plate, and is formed in a rectangular plate-shaped upper wall 11 and a side wall 12 extending substantially perpendicularly from the four sides of the upper wall 11 in a box shape in which one surface (the lower surface in the construction state) is opened. Has been. The upper wall 11 and the side wall 12 are provided with a plurality of heat radiation holes 13 for releasing heat generated by the light source unit 30 and the lighting devices 50a and 50b, which will be described later, disposed inside the instrument body 10 to the outside. . The instrument body 10 is attached in a state of being embedded in an embedding hole 101 provided in the ceiling material 100, and the instrument body 10 is formed to have a size smaller than the dimension of the embedding hole 101. The upper wall 11 has an insertion hole 14 through which the embedded bolt 102 provided in the building frame (not shown) faces the embedded hole 101, and the embedded bolt 102 passed through the insertion hole 14 has an opening. By passing the washer 15 and screwing the nut 16, the instrument body 10 is fixed to the building frame. In addition, two metal spring receivers 18 that support a kick spring 60 described later are attached to the inner side surfaces of the two side walls 12 facing each other. Each spring receiver 18 has a pair of support pieces 18a each protruding in a direction substantially orthogonal to the side wall 12 and having a recessed groove into which the kick spring 60 is inserted at the opposite side edges.

  Further, lighting devices 50a and 50b for turning on an LED as a light source and relay terminal blocks 51 and 52 are attached to the inner side surface of the upper wall 11 (the lower surface in the construction state). The terminal block 51 is for power supply, and the power supply line L <b> 1 introduced into the instrument body 10 is connected through the insertion hole 17 a provided in the upper wall 11. The terminal block 52 is for a dimming signal, and is connected to a dimming signal line L2 introduced into the instrument body 10 through an insertion hole 17b provided in the upper wall 11. Thus, power is supplied to each of the lighting devices 50 a and 50 b via the terminal block 51 and a dimming signal is input via the terminal block 52.

  Next, the lighting unit 20 will be described. As shown in FIGS. 5 and 6, the lighting unit 20 includes a frame body 21 and a light source unit 30 as main components.

  The frame body 21 is made of a steel plate with a white coating on the surface, and includes a cylindrical tube portion 22 and a flange portion 23 extending laterally from one end side (lower end side in the construction state) of the tube portion 22. I have. A spring holding body 24 to which a pair of kick springs 60 are connected is screwed to two opposite side walls of the cylindrical portion 22. Each spring holder 24 is formed by bending and punching a steel plate. The spring holder 24 includes a fixed piece 25 that is screwed to the side wall of the cylindrical portion 22, an inclined piece 26 that protrudes obliquely upward from the distal end portion (upper end portion in the attached state) of the fixed piece 25, and the inclined piece 26. A locking piece 27 (locking portion) formed by folding substantially the entire end edge obliquely downward is integrally provided. Each spring holding body 24 is provided with two mounting holes 28 that open from the inclined piece 26 to the upper side of the fixed piece 25 at the front and rear, and for connecting a kick spring 60 to the hole edge of each mounting hole 28. The connecting metal fitting 65 is connected.

  The kick spring 60 is formed by bending a spring steel wire, and a coil portion 61 wound in a coil shape and a pair of arm portions 62 each having both ends of the coil portion 61 extended in a V shape. And a hook portion 63 in which the tip of each arm portion 62 is bent outward at a substantially right angle. The coil portion 61 is passed through a loop portion formed by bending a part of the connection fitting 65, and is connected to the spring holder 24 via the connection fitting 65 in a state where it can move freely. A resin cover 63 a is attached to the hook portion 63.

  The light source unit 30 includes four LED boards 32, four first reflecting members 33, a second reflecting member 34, and a mounting plate 35, as shown in FIGS. A horizontal cover 36 and a translucent panel 39 are provided.

  Each LED substrate 32 is formed in a rectangular plate shape (square shape), and a plurality of light emitting diodes (LEDs) 31 are mounted on one surface thereof at regular intervals in the vertical and horizontal directions. The four LED boards 32 are arranged side by side vertically and horizontally with the mounting surface of the LEDs 31 facing downward.

  The first reflecting member 33 is formed of a white synthetic resin (for example, polycarbonate resin), and is disposed on the lower side of the LED substrate 32. The first reflecting member 33 is formed with a plurality of window holes 33a for individually exposing the LEDs 31 mounted on the LED substrate 32, and the light reflecting each LED 31 is individually reflected around each window hole 33a. A surface 33b is formed.

  The second reflecting member 34 is formed in a square frame shape by combining four frame pieces 34a, and is disposed so as to surround the four first reflecting members 33 arranged in the vertical and horizontal directions. Each frame piece 34a is made of a steel plate with a white coating on the surface, and its lower surface is a reflecting surface that is inclined obliquely downward toward the outside, and reflects light emitted from the LED 31 to the side downward. To do.

  The mounting plate 35 is made of a steel plate, and has a rectangular plate-shaped main portion 35a, side pieces 35b extending in one direction from two opposite sides of the main portion 35a, and substantially perpendicular to the inside from the tip of each side piece 35b. Is integrally provided with a support piece 35c projecting from the front. The mounting plate 35 is formed in a substantially U shape when viewed from the front-rear direction, and is open to the front and rear sides and the lower side where the side piece 35b is not formed. On one surface of the main portion 35a (the side on which the side piece 35b extends), the LED board 32 and the first reflecting member 33 are arranged so as to overlap each other, and by screwing the screw 40 passed through the insertion hole into the first reflecting member 33, The LED board 32 and the first reflecting member 33 are attached to the attachment plate 35. A second reflecting member 34 is disposed on the one surface of the main portion 35a so as to surround the LED board 32 and the first reflecting member 33, and the screw 41 passed through the insertion hole of the mounting plate 35 is second reflected. It is attached to the attachment plate 35 by being screwed into the screw hole of the member 34.

  The translucent panel 39 is formed in a rectangular plate shape by milky white acrylic resin, and is formed in any gap between the lower end portion of the second reflecting member 34 fixed to the main portion 35a and the support piece 35c in any of the front and rear directions. Inserted (see FIG. 1). Then, the horizontal covers 36 are attached to both the front and rear sides of the mounting plate 35, and the openings on both the front and rear sides are closed with the horizontal covers 36, so that the support piece 35 c and the horizontal cover 36 and the lower end of the second reflecting member 34 are transparent. The peripheral portion of the optical panel 39 is sandwiched, and the translucent panel 39 is held by the mounting plate 35.

  A heat radiating plate 37 is attached to the other surface of the main portion 35a (that is, the back surface of the light source unit 30) by a method such as screwing. The heat radiating plate 37 is formed by bending a substantially rectangular plate-like aluminum plate, and the two sides along the above-described spring holder 24 are locked by folding substantially the entire edge thereof obliquely upward. A piece 37a (a locked portion) is formed.

  Connector covers 38, 38 made of steel plates are detachably attached to the upper surface of the heat radiating plate 37. The power supply connector 32a (either plug or socket) of each LED board 32 is exposed on the upper surface of the heat radiating plate 37, and the connector cover 38 covers the upper side of the connector 32a. Prevents foreign matter from accumulating.

  When attaching the light source unit 30 to the frame body 21, the installer inserts the light source unit 30 into the cylindrical portion 22 from above with the spring holder 24 removed from the frame body 21, and the light source unit 30 is inserted. It is placed on the upper side of the flange 23. Thereafter, the installer screws the spring holding body 24 onto the cylindrical portion 22 of the frame body 21 so that the locking piece 27 of the spring holding body 24 is hooked on the locked piece 37a of the heat radiating plate 37 from above. . At this time, the light source unit 30 is placed on the upper side of the flange portion 23, the side piece 35 b of the mounting plate 35 and the lateral cover 36 are in contact with the inner side surface of the cylindrical portion 22, and further on the locked piece 37 a of the heat radiating plate 37. When the locking piece 27 is locked, the light source unit 30 is held by the frame body 21. Note that the light source unit 30 is attached to the frame body 21 so that the front surface on which the LEDs 31 are arranged faces outward in the construction state. The LED 31 emits light emitted to the outside through the translucent panel 39 and the opening of the frame body 21.

  Next, the construction method of the LED lighting apparatus 1 will be described with reference to FIG. The lighting device 50a, 50b and the terminal blocks 51, 52 are attached to the fixture body 10 in advance, and the lighting unit 20 will be described as being assembled in advance.

  First, the installer introduces the power supply line L1 and the dimming signal line L2 drawn from the embedding hole 101 of the ceiling material 100 into the instrument main body 10 through the insertion holes 17a and 17b of the instrument main body 10. The installer inserts the instrument main body 10 into the embedded hole 101, passes the embedded bolt 102 through the insertion hole 14, passes the washer 15 through the embedded bolt 102, and tightens it with the nut 16. Is fixed to the building frame.

  Thereafter, the installer connects the power supply line L1 to the power supply terminal block 51 and connects the dimming signal line L2 to the dimming signal terminal block 52. The installer connects the connector (socket or plug) connected to one end of the cable 53 to the connector 32a, and connects the connector 54 (socket or plug) connected to the other end of the cable 53 to the lighting device 50a. , 50b to the connector 56 (plug or socket) connected to the cable 55.

  Next, the installer flexes both arm portions 62 of the kick spring 60 provided on one spring holding body 24, inserts the arm portion 62 into the recessed groove of the support piece 18a, and inserts the hook portion 63 into the recessed groove. The lighting unit 20 is temporarily suspended from the instrument body 10 by being hooked on the peripheral edge of the instrument. Thereafter, the installer flexes both the arm portions 62 of the kick spring 60 provided on the other spring holder 24, inserts the arm portion 62 into the concave groove of the support piece 18a, and inserts the hook portion 63 into the concave groove. The lighting unit 20 is suspended from the instrument body 10 by being hooked on the peripheral edge. Then, when the installer pushes the lighting unit 20 toward the instrument body 10, both arms 62 of the kick spring 60 expand in a direction away from each other, and the flange portion 23 of the frame 21 is moved by the spring force of the kick spring 60. The lighting unit 20 is held by the fixture main body 10 in a state where the lighting unit 20 is in contact with the opening edge.

  When the lighting unit 20 is removed for maintenance or the like, when the installer pulls the frame body 21 against the spring force of the kick spring 60, the arms 62 of the kick spring 60 approach each other. By being bent, the lighting unit 20 is lowered. And the lighting part 20 will be in the state suspended from the instrument main body 10 when the hook part 63 provided in the front-end | tip of both the arm parts 62 contact | abuts to the peripheral part of the ditch | groove provided in the support piece 18a. In this state, if both arms 62 of the kick spring 60 are bent and removed from the concave groove of the support piece 18a, the lighting unit 20 can be removed from the instrument body 10.

  As described above, the LED lighting device 1 of the present embodiment includes the device main body 10, the frame body 21, the light source unit 30, the heat radiating plate 37, the kick spring 60, the spring holder 24, and the locking piece 27. And. The instrument main body 10 is provided with an opening on one side and is constructed with the opening on the lower side. The frame body 21 is attached to the opening of the instrument body 10. The light source unit 30 is mounted on the frame body 21 with the LEDs 31 disposed on the front side and the front side facing outward. The heat radiating plate 37 is provided on the back surface of the light source unit 30. The kick spring 60 is formed in a V shape by bending a spring wire, and both arm portions 62 extending from the center portion (coil portion 61) are expanded outward in a free state, and both arm portions are 62 is supported by a spring receiver 18 provided in the instrument body 10. A central portion of the kick spring 60 is connected to the spring holder 24. The locking piece 27 (locking portion) is provided on the spring holding body 24, and the heat dissipation plate 37 includes the spring holding body 24 attached to the frame body 21 on which the light source unit 30 and the heat dissipation plate 37 are placed. It is hooked on the locked piece 37a (locked portion).

  Thereby, even when the lighting unit 20 is temporarily suspended from the instrument body 10, the locking piece 27 of the spring holding body 24 attached to the frame body 21 is hooked on the locked piece 37 a provided on the heat radiating plate 37. Therefore, even if the light source unit 30 and the heat radiating plate 37, which are heavy objects, are placed on the frame body 21, the locking piece 27 and the locked piece 37a are not easily deformed, and the light source unit 30 and the heat radiating plate 37 are It can be held firmly. Further, since the locking piece 27 is provided on the spring holding body 24 and the locked piece 37a is provided on the heat radiating plate 37, a new member is provided to provide the locking piece 27 and the locked piece 37a. There is no need to add, and the number of parts can be reduced.

  In the LED lighting apparatus 1, the locked piece 37 a is formed by bending substantially the entire edge of the heat radiating plate 37, and the locking piece 27 is formed on the substantially entire edge of the spring holder 24. It is formed by bending.

  Thereby, compared with the case where the to-be-latched piece 37a and the latching piece 27 are formed by bending a part of edge, the intensity | strength of the to-be-latched piece 37a and the latching piece 27 improves, and the light source unit 30 and heat dissipation are improved. The holding force of the plate 37 can be increased.

  Moreover, in this LED lighting fixture 1, the spring holder 24 is formed of a material having thermal conductivity.

  As a result, the heat of the heat radiating plate 37 is easily transmitted to the spring holder 24 where the locking piece 27 is locked to the locked piece 37a, so that the heat generated by the LED board 32 is easily radiated and the heat dissipation is improved. be able to.

DESCRIPTION OF SYMBOLS 1 LED lighting fixture 10 Appliance main body 20 Lighting unit 21 Frame body 24 Spring holding body 27 Locking piece (locking part)
30 Light source unit 31 LED
32 LED board 37 Heat sink 37a Locked piece (locked part)
60 Kick spring 61 Coil part (central part)
62 Arm part 63 Hook part 65 Connecting metal fitting

Claims (3)

An instrument body provided with an opening on one side and constructed with the opening on the lower side;
A frame attached to the opening of the instrument body;
A light source unit in which LEDs are arranged on the front surface side and placed on the frame body with the front surface facing outward;
A heat sink provided on the back side of the light source unit;
The spring wire is bent to form a V-shape, and both arm portions extending from the center portion are expanded outward in a free state, and the arms on both sides are mounted on a spring receiver provided in the instrument body. A kick spring whose part is supported,
A spring holder to which a central portion of the kick spring is coupled;
A locking portion provided on the spring holding body, and hooked on a locked portion provided in the heat radiating plate in a state where the spring holding body is attached to the frame body on which the light source unit and the heat radiating plate are mounted. An LED lighting apparatus comprising:   The locked portion is formed by bending substantially the entire edge of the heat sink, and the locking portion is formed by bending substantially the entire edge of the spring holder. The LED lighting apparatus according to claim 1.   The LED lighting apparatus according to claim 1, wherein the spring holder is formed of a material having thermal conductivity.

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