JP2013254753A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of being arranged on an indoor ceiling and a ceiling of a train or the like, and improving its appearance.SOLUTION: A lighting fixture 1 includes an elongated metal body base 2, an illumination cover 38, and a light-emitting unit 31. The body base 2 forms an upper wall 3, and sidewalls 5, and the illumination cover 38 is inserted into and supported on grooved chamfers 6 of the sidewalls 5.

Description

  The present invention relates to a lighting apparatus installed on an indoor ceiling, a train ceiling, or the like.

  2. Description of the Related Art A lighting fixture configured by locking a light emitting module including a light emitting unit, a lens unit, a pair of plug units, and a pair of outlet units to a locking hook unit fixed to a ceiling plate is known as a related art. (For example, refer to Patent Document 1).

  The light emitting unit has a hollow locking structure in the upper part and a pair of locking structures in the lower part, and a circuit board on which a plurality of light emitting elements are installed is attached to the lower surface of the hollow locking structure. Yes. The light emitting unit is locked in an inverted manner between two locking hook structures of the locking hook unit. The lens unit is locked to a pair of locking structures of the light emitting unit, covers the circuit board, and is attached to the light emitting unit.

  The outlet unit has outlet holes and is connected to the hollow locking structure at both ends in the longitudinal direction of the light emitting unit. The outlet unit has plug pins, and covers the ends of the pair of locking structures and the ends of the lens unit supported across the ends at the longitudinal ends of the light emitting unit and is overlapped with the outlet unit from below. ing. The plug pin is connected to the outlet hole. And the conducting wire pulled out from the light emitting unit is connected to the plug pin through the opening formed in the outlet unit.

  Therefore, in the lighting device described in Patent Document 1, a pair of outlet units are electrically connected to a power supply unit (not shown), and the light emitting elements included in the light emitting unit are energized, whereby these light emitting elements emit light. Light can be illuminated through the lens unit and projected downward.

Utility Model Registration No. 3147703

  However, since the power supply unit is not described in Patent Document 1 as described above, the wiring structure leading to this power supply unit is naturally unknown.

  Generally, the power supply unit included in the lighting fixture may be built in the fixture main body or may be externally attached to the upper surface of the fixture main body so as to be positioned in the space behind the ceiling where the lighting fixture is installed. .

  In the case of a luminaire equipped with an externally arranged power supply unit, such as the latter, where the majority of the wiring is exposed and routed on the upper surface of the fixture body in contact with the ceiling surface, the luminaire is installed. The exposed wiring part exposed on the upper surface of the fixture body may deteriorate the appearance of the lighting fixture and impair the merchantability of the lighting fixture. The exposed wiring portion may be sandwiched between the upper surface of the main body and the lighting fixture may not be properly installed.

  In particular, in order to arrange a plurality of light emitting elements in a row, a configuration in which the light emitting elements are arranged in a row on a single long circuit board causes various inconveniences in terms of manufacturing and assembly. Therefore, a plurality of light-emitting elements may be arranged in a line by arranging a plurality of circuit boards having a certain length to which a plurality of light-emitting elements are attached in a line. In such a configuration, since it is necessary to route the wiring to the power supply unit for each circuit board used, as described above, it is necessary to expose most of the wiring on the upper surface of the instrument body as described above. Contributes to the problem.

Further, for such a problem, the technique of Patent Document 1 in which the wiring structure from the light emitting unit to the power supply unit is unknown does not disclose or suggest any solution.
Therefore, the objective of this invention is providing the lighting fixture which can improve an external appearance.

  The present invention provides a long metal having an upper wall portion, a side wall portion integrally formed continuously at both end portions in the width direction of the upper wall portion, and a groove formed along the longitudinal direction of each side wall portion. A main body base made of; a long circuit board provided in a recess formed by an upper wall part and a side wall part; a light emitting unit having a plurality of light emitting elements mounted on the circuit board; An illumination cover formed of a diffuse translucent synthetic resin that has an end plate portion, is inserted in the groove shape and provided on the main body base, and closes an end portion side of the recess by the end plate portion; It is characterized by comprising;

  In this embodiment, the main body base is preferably made of a metal that is lightweight and has excellent thermal conductivity, for example, an aluminum alloy, and the wire portion may be provided according to the number of light emitting units, and the wire portion may be a hole or Can be formed with notches. In this invention, the side wall portion of the main body base may be continuous so as to be bent at a substantially right angle with respect to the upper wall portion, or may be continuous so as to be bent obliquely. In this embodiment, the main body cover is preferably made of metal in order to secure a larger heat radiation area of the entire lighting fixture, and the wiring space formed between the main body cover and the side wall portion is formed on the main body base. However, if the number of light emitting units is large, they can be provided on both sides in the width direction of the main body base. In this latter form, the base holes may be provided in each of the side wall portions. In this embodiment, a semiconductor light emitting element such as an LED (light emitting diode) chip can be suitably used as the light emitting element. In this embodiment, the electric wire included in the light emitting diode refers to an electric wire having a configuration in which the outer side of the metal conductor is covered with an insulating coating, and is further covered with a tubular insulating protective covering covering the insulating coating. It does not matter.

  According to the lighting fixture of the first aspect, there is an effect that the appearance can be improved.

It is a perspective view which shows the lighting fixture which concerns on one Embodiment of this invention seeing from lower side. It is a perspective view which shows the lighting fixture of FIG. 1 seeing from an upper side. It is a perspective view which shows the one end part of the lighting fixture of FIG. 1 seeing from a lower side. It is sectional drawing which follows the arrow F4-F4 line | wire in FIG. It is sectional drawing which follows the arrow F5-F5 line | wire in FIG. It is a perspective view which shows a part of main body base with which the lighting fixture of FIG. 1 is provided.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

  The code | symbol 1 in FIGS. 1-5 has shown the lighting fixture. The luminaire 1 is installed on, for example, a train ceiling A (see FIGS. 4 and 5), and includes a main body base 2, a main body cover 11, a pair of main body end plates 15, a power supply unit 21, At least one, for example, four light emitting units 31 (only one is shown in FIGS. 4 and 5), a lighting cover 38, and a pair of positioning holders 41 are provided.

  The main body base 2 is made of an extruded mold material that is an integrally molded product made of metal, for example, an aluminum alloy, and is long. Here, the term “long” refers to a configuration in which the dimension of the main body base 2 in the longitudinal direction is longer than the dimension of the main body base 2 in the width direction. As shown in FIGS. 4 to 6, the main body base 2 has an upper wall portion 3, left and right side wall portions 5, and a heat radiating portion 9, and is formed symmetrically.

  Specifically, the upper wall portion 3 is the thickest part in the main body base 2 and has a pair of tapping holes 3a that open to the upper surface and the flow end in the longitudinal direction, respectively. These tapping holes 3a extend over the entire length of the upper wall 3 in the longitudinal direction. Fixing holes 3b (only one is shown in FIG. 5) are provided at both ends in the longitudinal direction of the upper wall portion 3 so as to penetrate in the thickness direction.

  The left and right side wall portions 5 are provided integrally and continuously so as to be bent substantially perpendicularly downward from both widthwise end portions of the upper wall portion 3. Fine irregularities are provided on the upper side surface of the side wall 5, and these form a streak and extend over the entire length in the longitudinal direction of the side wall 5. The left and right side wall portions 5 and the upper wall portion 3 form an accommodation recess 2a, and the accommodation recess 2a is opened to the lower side and the longitudinal ends of the main body base 2, respectively.

  Grooves 6 are formed in each of the left and right side wall portions 5 so as to open into the housing recess 2a and open at both ends in the longitudinal direction of the side wall portion 5 (that is, at both ends in the longitudinal direction of the main body base 2). These groove strips 6 are close to the lower surface opening portion of the main body base 2 and are provided at the same height position.

  Further, at least one of the left and right side wall parts 5, for example, the side wall part at the right position in FIGS. .) Is formed. These through-line portions 7 are provided at intervals along the longitudinal direction of one side wall portion 5 corresponding to the arrangement of the light emitting units 31 described later.

  The heat dissipating part 9 is integrally connected to the lower ends of the left and right side wall parts 5. These heat radiating portions 9 protrude so as to be separated from each other. In other words, the heat dissipating part 9 projects to the side of the side wall part 5 and is integrally provided continuously. Fine irregularities are provided under the heat dissipating part 9, and these form a streak and extend over the entire length of the heat dissipating part 9 in the longitudinal direction.

  The body cover 11 is formed by bending a sheet metal. The main body cover 11 has the same width and the same length as the main body base 2. The main body cover 11 has an upper plate portion 11a and left and right bent plate portions 11b.

  The upper plate portion 11a has the same width as the main body base 2 and is disposed so as to cover the upper wall portion 3, and a plurality of first screws 12 (FIG. 2) screwed into the middle portion in the longitudinal direction of the tapping hole 3a from above. And the screw upper wall 3 is fixed. A plurality of escape holes 13 (only two are shown in FIG. 4) are formed in the longitudinal center portion of the upper plate portion 11a.

  The left and right bent portions 11b are formed to be bent substantially at a right angle downward from both ends in the width direction of the upper plate portion 11a, and further bent at a substantially right angle in a direction approaching each other. The horizontal portions 11 c of the bent portions 11 b are in contact with the upper surface of the heat radiating portion 9 of the main body base 2. Thereby, the main body cover 11 forms spaces S1 and S2 between the left and right side walls 5 of the main body base 2, respectively.

  These spaces S <b> 1 and S <b> 2 extend along the entire lengths of the main body base 2 and the main body cover 11, and are parallel to the housing recess 2 a separated by the side wall portion 5. One of the spaces S1 is used as a wiring space. The line portion 7 faces the space S1, and the space S1 for wiring and the housing recess 2a are communicated with each other through the line portion 7.

  A through hole 14 (see FIG. 2) is opened in the longitudinal center of the upper plate portion 11a of the main body cover 11. The through hole 14 faces the wiring space S1. Furthermore, a hole 11d that is larger than the fixing hole 3b and faces the fixing hole 3b is formed in each of both ends in the longitudinal direction of the upper plate portion 11a.

   The pair of main body end plates 15 are formed by bending a sheet metal. These body end plates 15 have portions fitted to both ends in the longitudinal direction of the spaces S1 and S2 as shown in FIG. 5, and by connecting these portions with a plurality of blind rivets 16, The base 2 and the body cover 11 are provided so as to cover both ends. The pair of body end plates 15, the body base 2, and the body cover 11 form a substantially rectangular parallelepiped instrument body 18, and the housing recess 2 a is opened at the center in the width direction of the lower surface of the instrument body 18. Yes.

As shown in FIG. 2, the power supply unit 21 incorporates a power supply circuit such as an inverter circuit in a metal case, and has a wire connector 22 (one end side) connected to the power supply circuit at both longitudinal ends of the metal case. Only the electric wire connector of FIG. The illustrated wire connector 22 is for loading, and the unillustrated wire connector on the other end is for power supply.
The power supply unit 21 is fixed to the upper surface of the instrument body 18 using a mounting bracket 24 shown in FIGS.

  Specifically, the mounting bracket 24 is formed of a base plate portion 24a that is overlaid on the main body cover 11, and a support plate portion 24b that is bent at a substantially right angle upward from one side portion of the base plate portion 24a.

  The base plate portion 24 a is screwed to the upper wall portion 3 of the main body base 2 by a plurality of second screws 25 that are screwed into the tapping hole 3 a from above through the escape holes 13 of the main body cover 11. Thus, the through hole 14 is continuous with one end in the longitudinal direction of the mounting bracket 24 arranged on the main body cover 11.

  Both ends in the longitudinal direction of the power supply unit 21 are fixed to the support plate 24b. The fixing screw used for this fixing is indicated by reference numeral 26 in FIG. The power supply unit 21 thus supported by the support plate portion 24 b is disposed at the center in the longitudinal direction of the main body cover 11, and the load-side wire connector 22 is positioned in the vicinity of the through-hole 14.

  The four light emitting units 31 include a plurality of light emitting elements 32 (only one is shown), a circuit board 33 on which these light emitting elements 32 are mounted, and an electric wire 34, as representatively shown in FIG. .

  Each light emitting element 32 includes a semiconductor light emitting element that generates heat in a light emitting state, for example, an LED (light emitting diode) chip, and is mounted in a line along the longitudinal direction of the circuit board 33. The light emitting elements 32 on the circuit board 33 are connected in series. Each light emitting element 32 emits blue light, for example, and is covered with a translucent sealing resin mixed with a yellow phosphor (not shown). Therefore, the sealing resin forms a light emitting surface that emits white light. The electric wires 34 are connected to both ends of the series circuit of the circuit board 33 to which the light emitting elements 32 are connected. These two electric wires 34 are made of an insulation-coated electric wire, and are further covered with an insulating tube 35 in a combined form.

  The respective light emitting units 31 are screwed to the lower surface of the upper wall portion 3 with the respective light emitting elements 32 facing downward in the housing recess 2 a and are arranged along the longitudinal direction of the instrument main body 18. Thereby, the light emitting element row | line | column which each light emitting unit 31 has is continued in the longitudinal direction of the instrument main body 18. FIG.

  The electric wires 34 (see FIGS. 2 and 4) of each light emitting unit 31 are drawn out to the wiring space S1 through the corresponding wiring portions 7 and further wired in the space S1. It is drawn out of the instrument body 18 through the wire hole 14. An exposed wiring portion 34 a (see FIG. 2) drawn out of the instrument body 18 is inserted and connected to the electric wire connector 22 of the power supply unit 21. The length of the exposed wiring portion 34a is 80 mm or less.

  The illumination cover 38 is formed slightly shorter than the total length of the main body base 2 with a transparent synthetic resin or a diffuse translucent synthetic resin such as milky white, and an end plate portion 38a shown in FIG. Have. Both side edges in the width direction of the lighting cover 38 form substantially horizontal mounting edges. The lighting cover 38 has its left and right mounting edges inserted into the grooves 6 of the main body base 2 from one end to the other end in the longitudinal direction of the main body base 2, thereby covering each light emitting unit 31 and covering the main body. It is supported by the base 2.

Each positioning holder 41 is formed by bending a sheet metal, and has a left and right engagement edge portion 41a and a stopper portion 41b formed so as to extend between one end thereof as shown in FIG. These positioning holders 41 are respectively disposed on both sides in the longitudinal direction of the illumination cover 38 by inserting the engaging edge portions 41 a into the grooves 6 of the main body base 2, and are prevented from coming off by the main body end plate 15. ing. The stopper part 41b of the positioning holder 41 is in contact with or close to the upper outer surface of the end plate part 38a of the illumination cover 38 as shown in FIG. Therefore, the illumination cover 38 is held by the positioning holder 41 so as not to move in the axial direction.
As shown in FIG. 5, each positioning holder 41 has a screw through hole 43 facing the fixing hole 3b at the center thereof.

  The luminaire 1 having the above-described configuration has the screw holes 43 communicated vertically with each other at both ends in the longitudinal direction in a state where the power supply unit 21 is inserted into the opening B (see FIG. 4) opened in the ceiling A. The fixing hole 3b and the hole 11d are sequentially inserted and installed on the ceiling A in a state where both ends are supported by installation screws 45 (only one is shown in FIG. 5) to be screwed into the ceiling A. The opening B of the ceiling A is formed to have a size that can accommodate the exposed wiring portion 34a.

  The lighting fixture 1 having the above configuration has a wiring space S1 extending along the longitudinal direction of the long fixture main body 18, and the side wall 5 of the main body base 2 with the electric wire 34 of the light emitting unit 31. The wiring section 7, the wiring space S 1, and the wiring hole 14 of the main body cover 11 are wired and connected to the electric wire connector 22 of the power supply unit 21. Therefore, most of the electric wires 34 can be accommodated in the wiring space S <b> 1 and wired, and the exposed wiring portion 34 a of the electric wires 34 is connected from the through hole 14 to the electric wire connector among the electric wires from the light emitting unit 31 to the power supply unit 21. Only a portion reaching 22 can be limited to a short length.

  Thus, since the exposure of the electric wire 34 from the light emitting unit 31 to the power supply unit 21 is minimized, it is possible to improve the appearance of the instrument main body 18 in a single state before being installed on the ceiling A and its merchantability. At the same time, when the lighting fixture 1 is installed on the ceiling A, the exposed wiring portion 34a of the electric wire 34 becomes difficult to be sandwiched between the ceiling A and accordingly, the lighting fixture 1 can be easily installed on the ceiling A accordingly.

  Furthermore, in the lighting fixture 1 having the above-described configuration, the upper plate portion 11a of the main body cover 11 is screwed to the upper wall portion 3 of the main body base 2 from above. At the same time, the mounting bracket 24 is fixed to the upper wall portion 3 with the upper plate portion 11a interposed therebetween by a second screw 25 that passes through the upper plate portion 11a from above and is screwed into the upper wall portion. The power supply unit 21 is fixed to 24. Further, the light emitting unit 31 is screwed to the upper wall portion 3 of the main body base 2 from below.

  Thus, since the main body cover 11, the power supply unit 21, and the light emitting unit 31 are respectively screwed to the upper wall portion 3 of the main body base 2, the screws for fixing these protrude into the wiring space S1. There is no. Therefore, there is no possibility that the screw screwed into the main body base 2 interferes with the electric wire 34 wired in the wiring space S1, and the electric wire 34 is damaged.

  At the same time, the body cover 11, the power supply unit 21, the light emitting unit 31, and the like are attached on the basis of the body base 2, and the components constituting the instrument body 18 are integrated. Thereby, after attaching the main body cover 11 ahead of the ceiling A which is an installation place, the effort which supports the main body base 2 with the light emitting unit 31 fixed to the main body cover 11 is not required. Therefore, the lighting fixture 1 can be easily installed on the ceiling A in a state where it is assembled.

  In the lighting state in which the light emitting unit 31 of the lighting fixture 1 having the above configuration emits light, the power supply unit 21 generates heat and each light emitting element 32 also generates heat. Since the heat of the power supply unit 21 is mainly released from the peripheral surface to the ceiling space, it is possible to prevent the temperature from rising excessively. On the other hand, the heat generated by each light emitting element 21 is conducted to the upper wall 3 of the main body base 2 through the circuit board 33, so that the outside of the luminaire 1 passes from the upper wall 3 through the side wall 5. Conducted to the left and right heat dissipating parts 9 exposed to the air, and released from these heat dissipating parts 9 into the indoor atmosphere. At the same time, the heat of the main body base 2 is also conducted to the main body cover 11, and is thus released from the cover 11 into the indoor atmosphere. Thereby, since the temperature of each light emitting element 32 can be prevented from rising too much, the fall of those luminous efficiencies and the change of luminescent color can be suppressed.

  DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Main body base, 3 ... Upper wall part, 5 ... Side wall part, 7 ... Connection part, 9 ... Radiation part, 11 ... Main body cover, 11a ... Upper board part, 12 ... 1st screw, S1 ... Space (wiring space), 14 ... Wire hole, 18 ... Instrument body, 21 ... Power supply unit, 22 ... Electric wire connector, 24 ... Mounting bracket, 24a ... Base plate portion, 24b ... Support plate portion, 25 ... Second , 31 ... Light emitting unit, 32 ... Light emitting element, 33 ... Circuit board, 34 ... Electric wire, 34a ... Exposed wiring portion of electric wire

Claims (1)

A long metal main body base having an upper wall portion, a side wall portion formed integrally and continuously at both ends in the width direction of the upper wall portion, and a groove formed along the longitudinal direction of each side wall portion. When;
A long circuit board provided in a recess formed by the upper wall part and the side wall part, a light emitting unit having a plurality of light emitting elements mounted on the circuit board;
Formed with a diffuse translucent synthetic resin having an end plate portion at the end in the longitudinal direction, inserted into the groove shape and provided on the main body base, and closing the end portion side of the recess by the end plate portion A lighted cover;
The lighting fixture characterized by comprising.

Images