JP2018120764A - lighting equipment - Google Patents

Abstract

A lighting apparatus that can be simplified and reduced in weight is provided. A lighting fixture includes a light emitting module, a radiator, and an arm. The radiator 12 includes a light source attachment portion 26 in which the light emitting module 11 is disposed, and a plurality of radiation fins 27 protruding from the upper surface of the light source attachment portion 26. The arm 14 is directly connected to the radiator 12 and installed in the installation target part. [Selection] Figure 1

Description

  Embodiments described herein relate generally to a lighting fixture using a light emitting module.

  2. Description of the Related Art Conventionally, there is a lighting device for a high ceiling used for illumination of a space with a high ceiling such as a facility. In this lighting fixture, a light emitting module having a light emitting element is used, and the light emitting module is attached to the lower surface of the radiator. A plurality of heat radiating fins for projecting heat generated by the light emitting elements are provided on the upper surface of the radiator. The radiator is supported by a main body chassis disposed above the heat radiator, and a power supply unit is disposed on the main body chassis. An arm for installation on the ceiling or the like is connected to the main body chassis.

  In the configuration of this lighting apparatus, the number of parts is large, the structure is complicated, and the structure is heavy. When the lighting equipment is heavy, it is difficult to perform the construction at the time of installation, and the construction time tends to be long. A load is easily applied to a portion where a lighting fixture is installed.

JP 2013-201080 A

  The problem to be solved by the present invention is to provide a luminaire that can be simplified and reduced in weight.

  The lighting fixture of embodiment is provided with a light emitting module, a heat radiator, and an arm. The radiator has a light source mounting portion on which the light emitting module is disposed and a plurality of heat radiation fins protruding from the upper surface of the light source mounting portion. The arm is directly connected to the heat radiator and is installed on the installation part.

  According to the present invention, simplification and weight reduction can be expected.

It is the perspective view seen from the lower surface side of the lighting fixture which shows 1st Embodiment. It is the perspective view seen from the upper surface side of the lighting fixture same as the above. It is the perspective view seen from the lower surface side of the lighting fixture which shows 2nd Embodiment.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 and 2.

  The luminaire 10 is a high ceiling luminaire used for illumination in a space with a high ceiling such as a facility.

  The luminaire 10 includes a light emitting module 11, a radiator 12 in which the light emitting module 11 is disposed, a translucent cover 13 that covers the light emitting module 11, an arm 14 that supports the radiator 12, and a power source that is disposed in the arm 14. Part 15 and the like.

  The light emitting module 11 includes a substrate 20 and a plurality of light emitting elements 21 mounted on one surface of the substrate 20 (a part of the light emitting elements 21 is shown in the figure, and the others are not shown) doing.). The substrate 20 is formed in a quadrangle (for example, a square), and a pattern for mounting the light emitting element 21 is provided on one surface. The substrate 20 is attached to the lower surface of the radiator 12 by, for example, a plurality of screws so that the other surface of the substrate 20 is in close contact with the lower surface of the radiator 12 via an insulating heat dissipation sheet 22. A wiring hole 23 is formed in the center of the substrate 20. A wiring hole (not shown) is also formed in the center of the heat radiation sheet 22. The light emitting elements 21 are, for example, surface-mounted LEDs, and are mounted in a predetermined arrangement on a pattern on one surface of the substrate 20. The light emitting element 21 is not limited to the LED, and other light emitting elements such as an organic EL may be used.

  Further, the radiator 12 includes a light source mounting portion 26, a plurality of heat radiation fins 27 protruding from the upper surface of the light source mounting portion 26, and a pair of arm connecting portions 28 provided on both sides of the light source mounting portion.

  The radiator 12 is made of a metal material such as aluminum. The light source mounting portion 26 and the heat radiating fins 27 may be separated from each other, and the heat radiating fins 27 may be inserted into and fixed to a plurality of slits provided on the upper surface of the light source mounting portion 26. 27 may be integrally formed, for example, by extrusion.

  The light source mounting portion 26 is provided in a rectangular shape (for example, a square) and a flat plate shape, and a wiring hole (not shown) is formed in the center. The substrate 20 of the light emitting module 11 is attached to the lower surface of the light source attachment portion 26 via the heat dissipation sheet 22.

  The heat radiating fins 27 are provided on the upper surface of the light source mounting portion 26 so as to be parallel to each other between the two opposing sides of the light source mounting portion 26. The distance between the heat radiation fins 27 adjacent to each other near the center of the light source mounting part 26 is larger than the distance between the heat radiation fins 27 adjacent to each other near both ends around the center part of the light source mounting part 26. Widely formed. That is, near the center of the light source mounting portion 26, the heat radiation fin 27 is not provided, and the wiring hole of the light source mounting portion 26 is opened.

  The pair of arm connecting portions 28 are provided so as to protrude from the center of both sides intersecting the fin juxtaposition direction of the light source mounting portion 26 to both end sides of the plurality of radiating fins 27. The arm connecting portion 28 may be formed integrally with the light source mounting portion 26 and may be bent from the light source mounting portion 26, or may be formed separately from the light source mounting portion 26 and attached to the light source mounting portion 26. It may be done.

  The translucent cover 13 covers the light emitting module 11 and is attached to the radiator 12. The translucent cover 13 may be a clear cover with good light transmissivity or a diffusion cover that diffuses light. The translucent cover 13 closes the lower surface side of the radiator 12 to which the light emitting module 11 is attached, and prevents insects, dust, and the like from entering.

  In addition, the arm 14 has a mounting part 31 disposed so as to face the heatsink 12 with a space therebetween, and is bent downward from both ends of the mounting part 31 and directly connected to both sides of the heatsink 12. A pair of arm portions 32 is provided. The arm 14 is integrally formed of, for example, a metal plate.

  The attachment portion 31 is provided with a plurality of attachment holes 33 for installing the attachment portion 31 on a ceiling or the like as an installation portion.

  Each arm portion 32 is connected to both sides in the direction intersecting the fin juxtaposition direction of the radiator 12, that is, connected to the arm connecting portions 28 on both sides of the radiator 12.

  The distal end side of each arm portion 32 is disposed outside the arm connecting portion 28, and a connecting hole (not shown) (for example, a bolt) is inserted through the connecting hole 34 provided in the arm portion 32 and the hole provided in the arm connecting portion 28. And a nut). The arm portion 32 is formed with an arc-shaped angle adjusting groove 35 with the connecting hole 34 as the center, and is tightened (not shown) through which the angle adjusting groove 35 of the arm portion 32 and the hole provided in the arm connecting portion 28 are inserted. It is fastened and fixed by tools (for example, bolts and nuts). And, the arm 14 installed on the ceiling or the like is configured to be adjustable in angle so that the light irradiation direction of the lighting fixture 10 is a predetermined direction such as a direct downward direction.

  The power supply unit 15 is attached to the arm 14. That is, the power supply unit 15 is installed between the arm units 32 on both sides of the arm 14. The power supply unit 15 is disposed between the radiator 12 and the mounting part 31 of the arm 14 with a space between the radiator 12 and the mounting part 31 of the arm 14. The power supply unit 15 includes a power supply box 38 and a power supply circuit 39 accommodated in the power supply box 38.

  In the present embodiment, the distance between the radiator 12 and the power supply unit 15 is arranged in a positional relationship that is narrower than the distance between the mounting portion 31 of the arm 14 and the power supply unit 15, The power supply unit 15 may be disposed at an intermediate position between the radiator 12 and the attachment portion 31 of the arm 14.

  The power supply box 38 is a rectangular parallelepiped having a pair of rectangular main surfaces 40, a pair of side surfaces 41 in contact with the long sides of the main surfaces 40, and a pair of end surfaces 42 in contact with the short sides of the main surface 40. It is formed in a shape. Both end faces 42 of the power supply box 38 are attached to the inside of the arm portion 32.

  The power supply box 38 (power supply unit 15) is attached to the arm 14 so that the main surface 40 is in a horizontal direction along a direction intersecting the longitudinal direction of the arm unit 32. In this case, the main surface 40 of the power supply box 38 (power supply unit 15) faces the radiator 12 and covers the upper portion of the radiator 12.

  The power supply circuit 39 includes a power supply board and electronic components mounted on the power supply board. The power supply circuit 39 receives AC power, converts the AC power into a predetermined DC power, supplies the power to the light emitting module 11, and turns on the light emitting element 21. Further, the power supply circuit 39 receives a dimming signal from an external control device, and performs dimming control of the light emitting element 21 according to the dimming signal.

  The power supply unit 15 and the light emitting module 11 are electrically connected by a power feeding cable. The power supply cable is wired between the wiring hole 23 of the substrate 20, the wiring hole of the heat radiating sheet 22, the wiring hole of the light source mounting part 26 of the radiator 12, and the central heat radiating fin 27, and one end is connected to the power source part 15. The other end is connected to the substrate 20 of the light emitting module 11.

  And the lighting fixture 10 comprised in this way installs the attaching part 31 of the arm 14 to a ceiling etc., and is installed. When the ceiling or the like is inclined, the arm 14 is also inclined, but by adjusting the angle of the radiator 12 with respect to the arm 14, the light irradiation direction from the lighting fixture 10 is, for example, directly below. Can be set.

  The light source 21 of the light emitting module 11 is turned on by converting the alternating current power to a predetermined direct current power by the power source unit 15 and supplying the converted light to the light emitting module 11. Light from the light emitting element 21 to be lit is transmitted through the translucent cover 13 and is irradiated to the illumination space.

  The heat generated by the light emitting element 21 during lighting is mainly transmitted from the substrate 20 to the radiator 12 and is radiated from the plurality of radiation fins 27 of the radiator 12 into the air.

  And in the lighting fixture 10 of this embodiment, since the arm 14 is directly connected with the heat radiator 12, a main body chassis etc. become unnecessary and can be simplified and reduced in weight.

  Therefore, the luminaire 10 can be easily constructed at the time of installation, the time required for the construction can be shortened, and further, the load on the ceiling side where the luminaire 10 is installed can be reduced.

  Further, since the power supply unit 15 is attached to the arm 14, the thermal influence from the radiator 12 can be reduced.

  Since the power supply unit 15 is attached to the arm 14 so that the main surface 40 is oriented horizontally along the direction intersecting the longitudinal direction of the arm unit 32, the main surface 40 of the power supply unit 15 faces the radiator 12. Thus, it is possible to cover the top of the radiator 12 and reduce the adhesion of dust or the like to the radiator 12.

  The power supply unit 15 may be attached to the arm 14 so that the main surface 40 is vertically oriented along the longitudinal direction of the arm unit 32. In this case, the power supply unit 15 can be stably attached to the arm 14, the arm 14 can be reinforced, and the side surface 41 having a smaller area than the main surface 40 of the power supply unit 15 is provided as the radiator 12. Can be less affected by the heat from the radiator 12.

  Next, FIG. 3 shows a second embodiment. In addition, about the same structure as 1st Embodiment, description of the structure and effect is abbreviate | omitted using the same code | symbol.

  The radiator 12 has a pair of fall prevention parts 50 that prevent the translucent cover 13 from falling. The fall prevention part 50 is provided at the center of both sides of the light source attachment part 26 in the fin juxtaposition direction. The fall prevention part 50 is formed integrally with the light source attachment part 26 and is bent from the light source attachment part 26 into a substantially L shape.

  And since the fall prevention part 50 engages with the lower surface side of the translucent cover 13 disposed so as to cover the light emitting module 11 of the radiator 12, the translucent cover 13 receives light or heat from the light emitting module 11, for example. Even when it deteriorates, the translucent cover 13 can be prevented from falling. In addition, by providing the fall prevention unit 50 integrally with the radiator 12, the fall can be prevented with a simple configuration.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Lighting equipment
11 Light emitting module
12 Heatsink
14 arm
15 Power supply
26 Light source mounting part
27 Radiation fin

Claims (2)

A light emitting module;
A light source mounting portion on which the light emitting module is disposed, and a radiator having a plurality of radiation fins protruding from the upper surface of the light source mounting portion;
An arm that is directly connected to the radiator and is installed on the installation part;
A lighting apparatus comprising: The lighting fixture according to claim 1, further comprising: a power supply unit that is attached to the arm and supplies power to the light emitting module.

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