JP5455535B2 - Luminous equipment - Google Patents

Description

  The present invention relates to a light emitting device including a light emitting element such as a light emitting diode.

  For example, as a light-emitting fixture having a plurality of lamps including a light-emitting element such as a light-emitting diode, there is one including a reflecting member having a light reflecting surface provided at a position where light emitted from the plurality of lamps reaches. For example, the reflecting member is fixed to a substrate on which a plurality of lamps are mounted.

JP 2005-285446 A

  Heat generated by the plurality of lamps may be conducted to the reflecting member through the substrate, and the reflecting member may be deformed by the heat. There is a possibility that the light radiation distribution of the light emitting device is changed by the deformation of the reflecting member.

According to one aspect of the present invention, a light emitting device includes a mounting board, a plurality of lamps mounted on the lower surface of the mounting board, a base that fixes the periphery of the mounting board, and a reflective member that is fixed to the base. Is included. Each of the plurality of lamps includes a light emitting element and is arranged in a row. Reflecting member has a plurality of openings provided in rows in correspondence with a plurality of lamps, a light reflecting surface provided on the light reaches the position radiated from a plurality of lamps, a plurality of openings arranged and which is partially formed in the direction, and is fixed to a plurality of mounting portions component provided in the opening and away from the position of the light reflecting surface.

  According to one aspect of the present invention, the light emitting device includes a reflective member fixed to the base. The reflection member includes a plurality of attachment portions that are partially formed in the arrangement direction of the plurality of openings, and is fixed to the base body by the plurality of attachment portions. Therefore, in the light emitting device according to one aspect of the present invention, the deformation of the reflecting member due to the heat radiated from the plurality of lamps is reduced, and the change in the light radiation distribution is reduced.

1 shows a perspective view of a light emitting device in one embodiment of the present invention. The bottom view of the some lamp | ramp 3 and the reflection member 4 which were shown by FIG. 1 is shown. The longitudinal cross-sectional view of the light-emitting device shown by FIG. 1 is shown. The longitudinal cross-sectional view of the lamp | ramp 3 shown by FIG. 2 is shown. It is a figure which shows typically the heat conduction path | route in the light-emitting device shown by FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIGS. 1 to 3, the light-emitting device according to one embodiment of the present invention is mounted on a base 1, a mounting board 2 fixed to the base 1, and a lower surface of the mounting board 2. A plurality of lamps 3 and a reflecting member 4 fixed to the base 1 are included. In FIG. 1, the light emitting device is provided on the xy plane in a virtual xyz space. In FIG. 1, the upward direction is the positive direction of the virtual z axis. A light-emitting fixture is a lighting fixture attached to a ceiling, for example.

  The substrate 1 is substantially made of a metal material, for example.

  The mounting board 2 is a printed wiring board substantially made of a resin material, for example.

  Each of the plurality of lamps 3 includes a light emitting element, and is mounted on the mounting substrate 2 and arranged in a row. In FIG. 2, the plurality of lamps 3 are arranged in a row in the positive direction of the virtual y axis.

  As shown in FIG. 4, each of the plurality of lamps 3 includes a base body 31, a plurality of lead terminals 32 bonded to the base body 31, and a plurality of lead terminals 32 mounted on the upper surface of the base body 31. A light emitting element 33 electrically connected to the light emitting element 33, a frame member 34 provided on the upper surface of the base 31 and surrounding the light emitting element 33, and covering the light emitting element 33 and being fixed to the frame member 34. And a wavelength conversion member 35.

  The base 31 is substantially made of an insulating material. An example of the insulating material is ceramics.

  The light emitting element 33 is, for example, a light emitting diode (LED). The light emitting element 33 emits primary light according to driving power.

  The frame member 34 is bonded to the upper surface of the base 31 and is substantially made of an insulating material. An example of the insulating material is ceramics.

  The wavelength conversion member 35 includes a plurality of fluorescent particles. The plurality of fluorescent particles emit secondary light according to the primary light emitted from the light emitting element 33. The wavelength conversion member 35 emits white light, for example.

  Referring to FIGS. 1 to 3 again, the reflecting member 4 is provided at a position where a plurality of openings 41 provided corresponding to the plurality of lamps 3 and light emitted from the plurality of lamps 3 reach. And a light reflecting surface 42. The reflection member 4 further includes a plurality of attachment portions 43 that are partially formed in the arrangement direction of the plurality of openings 41. In FIG. 2, the arrangement direction of the plurality of openings 41 is the y-axis direction. The reflection member 4 is fixed to the base body 1 by a plurality of attachment portions 43. The plurality of attachment portions 43 are located inside the base body 1.

  The reflecting member 4 is fixed to the base 1 in a detachable state. The attachment portion 43 is deformed in the inner direction 431 and the outer direction 432 of the base body 1 by elastic deformation. The attachment portion 43 is deformed in the inner direction 431 of the base body 1 when attached to the base body 1. The reflecting member 4 is fixed to the base body 1 by the action of the attachment portion 43 returning to the outer side of the base body 1.

  In the light emitting device of the present embodiment, the reflecting member 4 is fixed to the base body 1 by a plurality of attachment portions 42 partially formed in the arrangement direction of the plurality of openings 41, so that the light emitting device Changes in the radiation distribution are reduced. As shown in FIG. 5, the heat generated by the lamp 3 is conducted to the substrate 2. Heat is conducted from the substrate 2 to the base 1 and is dissipated from the base 1 into the atmosphere. In the light emitting apparatus of the present embodiment, the reflecting member 4 is fixed to the base body 1 by a plurality of attachment portions 42 partially formed in the arrangement direction of the plurality of openings 41, for example, the reflecting member 4 is mounted. Compared to the structure fixed to the substrate 2, the heat generated by the lamp 3 is less likely to be conducted to the reflecting member 4.

  In the light emitting device of this embodiment, the reflecting member 4 is fixed to the base body 1 so as to be in contact with the base body 1 by elastic deformation of the mounting member 43. Therefore, the light emitting device of this embodiment has a reduced amount of heat conduction from the base 1 to the reflective member 4 as compared to, for example, a structure in which the reflective member 4 is bonded to the base 1. As described above, the light emitting device in the present embodiment is reduced with respect to the change in the light emission distribution by being improved with respect to the thermal control.

  In the light emitting device according to the present embodiment, the plurality of attachment portions 43 are located inside the base body 1, so that the deformation of the reflecting member 4 at the time of construction or the like is reduced.

  In the light emitting device according to the present embodiment, the reflecting member 4 is fixed to the base 1 in a detachable manner, so that, for example, the reflecting member 4 can be replaced, and the light radiation distribution can be improved while considering the cost. It becomes possible to plan.

  In the light emitting device of the present embodiment, the reflecting member 4 has a light reflecting surface 42 that surrounds the plurality of lamps 3 in common. As another example of the reflecting member 4, there is one having a plurality of light reflecting surfaces corresponding to the plurality of lamps 3.

1 Base 2 Mounting Board 3 Lamp 4 Reflecting Member

Claims (3)

A mounting board;
A plurality of lamps each including a light emitting element, arranged in a row, and mounted on the lower surface of the mounting substrate;
A base for fixing the periphery of the mounting substrate;
A plurality of openings provided in rows in correspondence to the plurality of lamps, a light reflecting surface provided on the emitted light reaches the position from the plurality of lamps, said plurality of openings are arranged are partially formed in the direction in which a reflecting member is fixed to the plurality of thus the base to the mounting portion fraction formed in the opening portion and the distant position of the light reflecting surface,
Luminescent device with The light emitting device according to claim 1, wherein the reflecting member is fixed to the inside of the base body by the plurality of attachment portions extending from a position away from the opening of the light reflecting surface . The light emitting device according to claim 1, wherein the reflecting member is fixed in a detachable manner to the base body by an action of returning from the elastic deformation of the plurality of attachment portions .

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