JP5971469B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture.

  As a conventional lighting fixture, there is a lighting fixture that has a relatively large output and is installed on a high ceiling such as a hall of a building or a gas station (see, for example, Patent Document 1). The lighting fixture described in Patent Literature 1 includes a cylindrical main body, a fixture main body having a heat radiating portion on one end side, a lamp having a light emitting portion provided on the other end side of the fixture main body, and a power source that controls lighting of the lamp. A unit.

  In this conventional example, a lamp is attached to the bottom plate of the main body, and the power supply unit is disposed on the top plate of the main body.

JP 2012-129172 A

  By the way, in the conventional example described in Patent Document 1, a high-output light source (light-emitting diode) is used to obtain a necessary light amount, and a large amount of heat is emitted from the light source that is lit. It was necessary to leave the distance. For this reason, there has been a problem that the height dimension of the main body becomes large.

  The present invention has been made in view of the above problems, and an object of the present invention is to reduce the size while obtaining the same amount of light as the conventional example.

  The lighting apparatus of the present invention has a plurality of lamps having a light source, a power supply unit that supplies power to the plurality of lamps, and an opening through which light emitted from the plurality of lamps passes on the bottom surface. A lamp and a fixture main body for holding the power supply unit, and the plurality of lamps are arranged so as to surround the power supply unit in a plane parallel to the bottom surface of the fixture main body, The lamp is arranged so as to partially overlap the lamp as viewed from the normal direction of the bottom surface of the main body.

  In this lighting fixture, the lamp has a lamp main body that holds the light source, and a plurality of heat radiating plates that protrude from the lamp main body, and the power supply unit as viewed from the normal direction of the bottom surface of the fixture main body. It is preferable that the heat radiating plate is not provided in a range that overlaps with the heat radiating plate, or the heat radiating plate having a smaller projecting dimension than outside the range is provided.

  In this lighting fixture, the lamp preferably has a ventilation groove formed between a predetermined number of the heat radiating plates of the plurality of heat radiating plates and the remaining heat radiating plates excluding the predetermined number of heat radiating plates. .

  In this lighting fixture, the lamp includes a lamp main body that holds the light source, and a power supply line that is supplied with electric power from the power supply unit, and the lamp main body is disposed near the power supply unit. It is preferable that a drawing hole for drawing in the electric wire is provided.

  The lighting fixture of the present invention has an effect that it can be reduced in size while obtaining the same amount of light as the conventional example.

1 shows an embodiment of a lighting fixture according to the present invention, in which (a) is a perspective view, (b) is a top view, (c) is a bottom view, (d) is a side view, and (e) is a side view. The lamp | ramp in the same as the above is shown, (a) is a perspective view, (b) is a top view, and (c) is a side view. The lamp in the above is shown, (a) is a bottom view of a light source equipped with a high output type light source, and (b) is a bottom view of a light source equipped with a low output type light source. It is sectional drawing of the lamp in the same as the above. The light distribution block of the lamp | ramp in the same as the above is shown, (a) is a perspective view, (b) is a sectional view, (c) is a sectional view of the main part. It is a perspective view of the state which showed the same and removed the cover of the power supply block. It is a top view of the state which showed the same and removed the power supply block and the attachment metal fitting. It is sectional drawing same as the above. The instrument main body in the same as above is shown, (a) is a top view, (b) is a side view, (c) is a side view, and (d) is a plan view of the main part.

  Hereinafter, embodiments in which the technical idea of the present invention is applied to a lighting device for a high ceiling will be described in detail with reference to the drawings. However, the lighting fixture to which the technical idea of the present invention can be applied is not limited to that for a high ceiling.

  As shown in FIG. 1, this embodiment includes an instrument body 1, four lamps 2, a power supply block 3, a mounting bracket 4, and the like.

  The lamp 2 has a lamp body 20, a light source block 21, a light distribution block 22, and the like as shown in FIGS. As shown in FIG. 4, the lamp body 20 includes a box-shaped storage portion 200 having an open bottom surface, a flat cylindrical shape that is connected to the lower end of the storage portion 200, and the top surface of the storage portion 200. A plurality of heat dissipating plates 202 protruding upward are integrally formed of aluminum or an aluminum alloy.

  A rectangular frame-shaped step portion 2000 protrudes from the inner bottom surface of the storage portion 200, and the light source block 21 is disposed inside the step portion 2000 (see FIG. 3). In addition, a drawing hole 2001 passes through the peripheral wall of the storage unit 200, and an annular bushing 2002 is fitted in the drawing hole 2001.

  On the inner peripheral surface of the frame portion 201, three semi-cylindrical protrusions 2010 are projected at equal intervals along the circumferential direction. Further, on the outer peripheral surface of the frame portion 201, three fixing pieces 2011 having a substantially triangular shape and having a round hole 2011A penetrating in the center are provided protruding at intervals.

  The heat radiating plate 202 has a rectangular plate shape, and is arranged so that the interval between the heat radiating plates 202 adjacent to each other along the thickness direction is substantially constant (see FIG. 2). However, a predetermined number (five in the illustrated example) of the plurality of (13 in the present embodiment) radiator plates 202 and the remaining (eight in the illustrated example) radiator plates excluding the predetermined number of radiator plates. Ventilation grooves 203 are formed between the two and 202 (see FIG. 2B). Therefore, since the air heated by the heat radiated from the heat radiating plate 202 can be quickly moved out of the lamp body 20 through the ventilation groove 203, the heat dissipation of the lamp body 20 can be improved.

  As shown in FIG. 3, the light source block 21 includes a light source unit 210, a feeder line 211, a mounting spring 212, an insulating sheet 213, and the like. The light source unit 210 includes a ceramic substrate 2100, a light source 2101 formed on the surface of the substrate 2100, and a receptacle connector 2102 that is also mounted on the surface of the substrate 2100.

  The light source 2101 includes a plurality of light emitting diode (LED) chips mounted on the substrate 2100 and a sealing member made of a synthetic resin (for example, a silicone resin) that has a light transmitting property and is mixed with a fluorescent material. Is done. That is, a part of the light emitted from the LED chip (for example, blue light) is wavelength-converted with a fluorescent material, and the wavelength-converted light (for example, yellow light) and the light that has not been wavelength-converted (blue light) are mixed. As a result, the light emitted from the light source 2101 becomes white light as a whole.

  However, the light source 2101 includes a low output type (see FIG. 3B) with a relatively small number of LED chips and a high output type with a relatively large number of LED chips (see FIG. 3A). There are two types. The high output type light source 2101 (2101A) has a larger substrate 2100 than the low output type light source 2101 (2101B) because of the larger number of LED chips.

  The power supply line 211 has two electric wires 2110 covered with a sheath, a plug connector 2111 connected to one end of each electric wire 2110, and a terminal pin 2112 attached to the other end of each electric wire 2110. Then, the plug connector 2111 is plugged into the receptacle connector 2102, so that the power supply line 211 is electrically connected to the light source 2101. The feeder 211 is inserted into the drawing hole 2001 through the bushing 2002, and the end on the side where the terminal pin 2112 is attached is drawn out of the storage unit 200.

  The attachment spring 212 is formed in a rectangular frame shape by a stainless steel leaf spring, and a plurality of spring pieces 2120 project from the frame. The attachment spring 212 is screwed to the inside of the step portion 2000 on the inner bottom surface of the storage portion 200 via the insulating sheet 213. That is, the attachment spring 212 is positioned by the step portion 2000. When the light source unit 210 is disposed inside the mounting spring 212, the substrate 2100 is sandwiched between the plurality of spring pieces 2120 of the mounting spring 212 and the inner bottom surface of the storage unit 200, so that the light source unit 210 is stored. It is attached to the inner bottom surface of the part 200 (see FIG. 3). However, there are two types of attachment springs 212: an attachment spring 212A corresponding to the light source unit 210A having the high output type light source 2101A, and an attachment spring 212B corresponding to the light source unit 210B having the low output type light source 2101B. In this embodiment, the two types of light source units 210A and 210B can be attached to the inner bottom surface of the storage unit 200 by preparing two types of attachment springs 212A and 212B.

  As shown in FIG. 5, the light distribution block 22 includes a reflection member 220, a translucent panel 221, and a waterproof member 222. The reflecting member 220 is composed of a reflecting portion 2200 formed in a truncated cone shape with both ends open, and an annular outer flange portion 2201 projecting outward from the opening edge (lower side) of the reflecting portion 2200. It is integrally formed with a plate material made of metal. The reflector 2200 controls the light distribution (irradiation range) by reflecting the light of the light source 2101 incident from the opening on one end side (upper side) on the inner peripheral surface and emitting it from the opening on the other end side (lower side). ing.

  The translucent panel 221 is formed in a disc shape from a translucent material such as acrylic resin, polycarbonate resin, or glass.

  In the waterproof member 222, a pair of contact portions 2220, 2221 formed in an annular shape and a connection portion 2222 that connects the outer peripheral edges of the contact portions 2220, 2221 are integrally formed of an elastic material such as silicone resin. Formed. Here, a gap (fitting groove) having a dimension slightly smaller than the total dimension of the thickness of the outer flange part 2201 and the thickness of the translucent panel 221 is provided between the contact parts 2220 and 2221 connected by the connection part 2222. 2223) is formed.

  Thus, the waterproof member 222 is configured such that the outer peripheral portion 2201 and the translucent panel 221 are fitted to the outer peripheral portion 2201 and the translucent panel 221 by fitting the peripheral portions of the outer peripheral portion 2201 and the translucent panel 221 in the fitting groove 2223. Is sandwiched between the pair of contact portions 2220 and 2221 from the thickness direction. As a result, the reflecting member 220 and the translucent panel 221 are fixed by the waterproof member 222.

  As shown in FIG. 4, the light distribution block 22 houses the reflecting portion 2200 of the reflecting member 220 in the housing portion 200, and houses the outer casing portion 2201, the translucent panel 221, and the waterproof member 222 in the frame portion 201. In this way, the lamp body 20 is assembled. Here, the connecting portion 2222 of the waterproof member 222 housed in the frame portion 201 is in elastic contact with the three protrusions 2010 protruding from the inner peripheral surface of the frame portion 201, so that the light distribution block 22 is mounted on the instrument body. Retained against 20 The waterproof member 222 has an inclined surface 2224 that shortens the distance from the translucent panel 221 as it approaches the storage portion 200 at the peripheral portion of the contact portion 2221 facing the storage portion 200 (connection portion with the connection portion 2222). Is formed (see FIG. 5). Therefore, the inclined surface 2224 makes it easy to insert the waterproof member 222 into the frame portion 201 of the lamp body 20.

  As shown in FIG. 6, the power supply block 3 includes four power supply units 30, a control unit 31, a terminal block 32, a mounting plate 33, a cover 34, and the like. The four power supply units 30 supply direct-current power to the four lamps 2 to cause the light source 2101 to emit light (light on), for example, AC supplied from the outside via the terminal block 32 A circuit for converting electric power into DC power is housed in a metal case 300. The control unit 31 controls each power supply unit 30 according to a dimming signal input from the outside, and dimmes each lamp 2 by increasing or decreasing the DC power supplied from the power supply unit 30. A terminal portion 301 used for electrical wiring with the terminal block 32, the control unit 31, and each lamp 2 is exposed on the side surface of the case 300 of the power supply unit 30.

  The four power supply units 30 and the control unit 31 are attached to the attachment plate 33 and fixed to the instrument body 1 as shown in FIG. The mounting plate 33 includes a rectangular fixed piece 330 fixed to the instrument main body 1 and four support pieces 331 erected above the upper surface of the fixed piece 330. These four support pieces 331 are arranged so as to be arranged in two rows along the longitudinal direction and the short side direction of the fixed piece 330, respectively. The four power supply units 30 are placed on the upper surface of the fixed piece 330 so that the terminal portions 301 face each other, and each case 300 is screwed to each support piece 331 and attached to the mounting plate 33. It is done. The control unit 31 is screwed to the lower surface of the mounting plate 33.

  The cover 34 is a rectangular parallelepiped metal box whose bottom surface is open. The cover 34 is placed on the fixed piece 330 so that the four power supply units 30 are accommodated therein, and is attached to the upper end of the support piece 331. The upper surface of the piece 332 is fixed to the mounting plate 33 by screwing (see FIGS. 1 and 8). Further, the cover 34 is provided with a plurality of vent holes 340 on both side surfaces and the upper surface facing in the longitudinal direction, and the heat generated by the power supply unit 30 is dissipated from the vent holes 340. An insertion groove 341 through which the power supply line 211 and the like of the lamp 2 are inserted is formed at the opening end in the center in the longitudinal direction of the cover 34.

  The terminal block 32 is attached to the upper center end in the longitudinal direction on the side surface of the cover 34 via an attachment fitting 35 bent in an L shape.

  As shown in FIG. 9, the instrument body 1 is integrally formed of aluminum or an aluminum alloy with a circular bottom plate 10, a peripheral wall 11 projecting upward from the periphery of the bottom plate 10, and a pair of mounting bases 12 to which the mounting bracket 4 is attached. ing.

  Four window holes (openings) 100 pass through the bottom plate 10, and three bosses 101 project around the window holes 100 at equal intervals (see FIG. 9). That is, by fixing the fixing screws 102 inserted into the round holes 2011A penetrating the three fixing pieces 2011 of the lamp 2 into the screw holes of the bosses 101, the four lamps 2 are closed so as to close the window holes 100. It fixes to the baseplate 10 of the instrument main body 1 (refer FIG.1 (b) and FIG. 8).

  Here, around each window hole 100 in the bottom plate 10, a cylindrical rib 103 that rises upward along the periphery of the window hole 100, and also rises upward from the outside of the rib 103 along the periphery of the window hole 100. A cylindrical positioning protrusion 104 is provided so as to protrude (see FIG. 9D). A reinforcing rib 105 that rises upward protrudes from the periphery of the window hole 100. This reinforcing rib 105 is provided to prevent the peripheral portion of the window hole 100 in the bottom plate 10 from being damaged or deformed. It has been.

  Thus, when the lamp 2 is fixed to the fixture body 1, the lamp 2 is positioned with respect to the window hole 100 by fitting the outermost shell positioning projection 104 with the frame portion 201 of the lamp body 20. In addition, since the tip of the rib 103 abuts the lower surface of the waterproof member 222 of the lamp 2 and presses the waterproof member 222 (light distribution block 22) upward, the waterproof member 222, the outer flange 2201 and the translucent panel 221 The degree of adhesion is increased and the waterproof property is improved.

  Furthermore, a plurality of (six in the illustrated example) bosses 106 are provided on the bottom plate 10 so as to protrude upward, to which the fixing pieces 330 of the mounting plate 33 are screwed. Then, the fixing piece 330 of the mounting plate 33 is placed on the upper end surface of each boss 106, and the screw inserted into the screw insertion hole penetrating the fixing piece 330 is screwed into the screw hole of each boss 106, thereby attaching the mounting plate 33. Is fixed to the bottom plate 10 of the instrument body 1. A gap (space) substantially equal to the height dimension of the boss 106 is formed between the bottom plate 10 of the instrument body 1 and the fixed piece 330 of the mounting plate 33.

  The pair of mounting bases 12 has a rectangular parallelepiped shape, and is disposed at a position facing the circumferential direction of the bottom plate 10 along the radial direction of the bottom plate 10. Each mounting base 12 has a screw hole formed on the outer surface. A part of the peripheral wall 11 is cut away so as not to interfere with the mount 12.

  The mounting bracket 4 has a long metal plate bent at substantially right angles in the same direction at both ends in the longitudinal direction, and screws (bolts) 5 inserted through screw insertion holes (not shown) penetrating the both ends. It is fixed to the instrument main body 1 by being screwed into the screw hole of each mounting base 12 (see FIGS. 1 and 6).

  By the way, the four lamps 2 are arranged so as to surround the power supply unit 30 in a plane parallel to the bottom plate 10 of the fixture body 1 as shown in FIG. Further, the four power supply units 30 are arranged so that they partially overlap the four lamps 2 when viewed from the normal direction (vertical direction) of the bottom plate 10 of the instrument body 1 (see FIG. 1B). . That is, since the lamp body 20 of the lamp 2 overlaps with the power supply unit 30 when viewed from above and below (see the two-dot broken line in FIG. 7), the heat sink 202 is not projected from the upper surface of the storage unit 200. The above range can be stored in a gap (space) between the bottom plate 10 and the fixed piece 330. However, a small heat radiating plate having a protruding dimension that does not contact the fixing piece 330 of the mounting plate 33 may be provided in the above range on the upper surface of the storage unit 200.

  Thus, in the present embodiment, since the plurality of lamps 2 and the power supply unit 30 are arranged as described above with respect to the bottom plate 10 of the instrument body 1, it is possible to reduce the size while obtaining the same amount of light as in the conventional example. Can be achieved. In the lamp body 20, since the plurality of heat sinks 202 are provided at least in a range that does not overlap with the power supply unit 30, the heat generated by the light source 2101 of the light source unit 210 can be efficiently radiated by the heat sink 202. .

  In addition, each lamp 2 is arranged on the bottom plate 10 of the fixture body 1 so that the lead-in hole 2001 penetrating the side surface of the storage section 200 of the lamp body 20 is close to the terminal block 32 of the power supply unit 30 (see FIGS. 8). Therefore, the length of the feeder line 211 that electrically connects each lamp 2 and the power supply unit 30 can be shortened, and there is an advantage that processing for the extra length of the feeder line 211 is simplified.

1 Instrument body 2 Lamp 3 Power block
21 Light source block (light source)
30 Power supply unit
100 Window hole (opening)

Claims (4)

  A plurality of lamps having a light source, a power supply unit that supplies power to the plurality of lamps, and an opening through which light emitted from the plurality of lamps passes is provided on the bottom surface, and holds the plurality of lamps and the power supply unit A plurality of lamps arranged to surround the power supply unit in a plane parallel to the bottom surface of the instrument body, and the power supply unit is in a normal direction of the bottom surface of the instrument body The lighting apparatus is arranged so as to partially overlap the lamp as viewed from above.   The lamp has a lamp body that holds the light source, and a plurality of heat radiating plates that protrude from the lamp body, and in a range that overlaps the power supply unit when viewed from the normal direction of the bottom surface of the fixture body. 2. The lighting apparatus according to claim 1, wherein the heat radiating plate is not projected, or the heat radiating plate having a projection dimension smaller than outside the range is projected.   The ventilation lamp is formed in the said lamp | ramp between the predetermined number of heat sinks of the said several heat sink, and the remaining heat sinks except the said predetermined number of heat sinks. The luminaire described.   The lamp has a lamp main body for holding the light source and a power supply line to which power is supplied from the power supply unit, and the lamp main body has a lead-in hole for drawing the power supply line into a portion close to the power supply unit. The lighting fixture according to any one of claims 1 to 3, wherein the lighting fixture is provided.

Images