JP5620178B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting apparatus that irradiates light from an LED light emitting unit in a predetermined direction via a reflecting plate having a curved reflecting surface.

2. Description of the Related Art Conventionally, there has been known a lighting fixture that irradiates light from an LED light emitting unit in a predetermined direction via a reflecting plate having a curved reflecting surface (for example, see Patent Document 1).
As shown in FIG. 15, a lighting fixture 100 described in Patent Document 1 is a vehicle lamp unit, and includes an LED package 101 that is a light source and a reflecting plate 102, and a reflection that emits irradiation light in the optical axis AX direction. The lamp unit is used by being housed in the front end portion of the vehicle.

The LED package 101 includes an LED chip 101A and a substrate 101B that supports the LED chip 101A, and the substrate 101B is attached in parallel to the optical axis AX. Therefore, the main optical axis direction of the LED package 101 is a direction orthogonal to the optical axis AX. The reflection plate 102 includes a reflection paraboloid 103 having a paraboloid of revolution centered on the light axis of the LED package 101, that is, the LED chip 101A, with the optical axis AX as a central axis. Further, a direct light control member 104 that blocks direct light from the LED package 101 is provided in front of the LED package 101 in the irradiation direction.
The LED package 101, the reflector 102, and the direct light control member 104 are attached to a metal bracket 105 having an overall L shape. A heat radiating fin 107 is provided at the rear of the vertical wall 106 of the metal bracket 105.

  Therefore, the light emitted from the LED package 101 is reflected by the reflecting surface 103 and irradiated as parallel light in the optical axis AX direction. At this time, direct light is blocked by the direct light control member 104 so that direct light is not irradiated to a certain range.

JP 2008-226788 A (FIG. 2)

Incidentally, in general, when the LED package 101 is replaced, it is necessary to remove the reflecting plate 102. Since the luminaire 100 described in Patent Document 1 described above is used alone, when replacing the LED package 101, one reflector 102 is removed and replaced, and then the reflector 102 is attached.
However, in the case of a lighting fixture using a plurality of LED packages and reflectors, the irradiation range may be changed by adjusting the directions of the reflectors to be slightly different. In such a case, it is troublesome to remove each reflector individually in order to replace the LED package. In addition, it is troublesome to make a fine adjustment after attaching the reflector, and there is a problem that workability is poor.

  The present invention has been made to solve the conventional problems, and provides a lighting apparatus capable of removing a plurality of reflectors in a lump and not requiring adjustment of the orientation of the reflector after attachment. Objective.

The lighting fixture of the present invention includes a housing having a light emitting surface for irradiating illumination light, a plurality of LED light emitting units fixed at predetermined positions of the housing, and a predetermined amount of light from each LED light emitting unit. possess a plurality of reflector having a reflecting surface for reflecting the orientation of the reflector mounting plate removably attached to the housing is attached adjustably said reflector in a predetermined direction, said reflector Reinforcing ribs also serving as louvers are provided on the irradiation side surface of the mounting plate .

  Moreover, as for the lighting fixture of this invention, a reflecting plate mounting plate has a mounting hole in which a part of external shape of a reflecting plate fits.

  In the present invention, the reflecting surface is adjusted in a predetermined direction so that the reflecting plate reflects the light from each LED light emitting unit in a predetermined direction, and the reflecting plate is attached to the reflecting plate mounting plate. Since it is detachably attached to the body, a plurality of reflectors can be removed by removing the reflector attachment plate, and a plurality of reflectors can be attached by attaching the reflector attachment plate to a predetermined position of the housing. Therefore, it is possible to provide a luminaire having an effect that the working efficiency can be greatly improved.

The top view of the lighting fixture of 1st Embodiment which concerns on this invention Sectional view at II-II position in FIG. (A) is a sectional view of a single LED light emitting part, (B) is a perspective view of a single LED light emitting part. Sectional drawing which shows the modification of the single LED light emission part shown in FIG. (A) is an exploded perspective view showing an attachment state of three LED light emitting parts, (B) is a perspective view showing an example of attachment of a power supply part. Top view of reflector mounting plate The perspective view which looked at the reflector from the irradiation direction The perspective view which looked at the reflector mounting plate which attached the reflector from the irradiation direction The perspective view which looked at the reflector mounting plate which attached the reflector from the irradiation direction opposite side (A) is a top view which shows the effective reflective projection surface at the time of irradiating with the LED light emission part inclined, (B) is sectional drawing. (A) is a top view which shows the effective reflective projection surface at the time of turning an LED light emission part in the orthogonal direction with respect to the central axis of a reflecting plate, (B) is sectional drawing. The graph which shows a light distribution curve when the angle which the main optical axis of a LED light emission part and the central axis of a reflecting plate make is 90 degrees or less The graph which shows a light distribution curve when the angle which the main optical axis of LED light emission part and the central axis of a reflecting plate make is 90 degree | times (A) is a top view which shows the effective reflective projection surface in the lighting fixture of 2nd Embodiment which concerns on this invention, (B) is sectional drawing. Cross-sectional view of a conventional lighting fixture

(First embodiment)
Hereinafter, the lighting fixture of 1st Embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIGS. 1 and 2, the lighting fixture 10 according to the first embodiment of the present invention includes a housing 20, a plurality of LED light emitting units 30, and a plurality of reflectors 40. It is.
In the following description, a case where six LED light emitting units 30 and six reflecting plates 40 are provided as the plurality of LED light emitting units 30 and the plurality of reflecting plates 40 will be described, but the number is limited to six. It is not a thing.

  The casing 20 is formed into a rectangular box shape by press-molding a thin aluminum die-cast plate member, for example, and the upper part in FIG. 2 is open (opening 21). The opening 21 is detachably provided with a thin rectangular box-shaped lid 23 that opens downward, and covers the opening 21. The lid 23 has a rectangular frame-shaped frame portion 233 and a translucent plate 24 made of, for example, acrylic resin attached to the frame portion 233, and constitutes a light emitting surface.

Plural (here, for example, three) first locking members 22 are provided on the outer surfaces of the two opposite sides 201 and 202 of the housing 20, and the lid 23 fitted to the two sides 201 and 202 is provided. A plurality of second locking members 25 corresponding to the first locking members 22 are provided on the outer surfaces of the two opposite sides 231 and 232. The first locking member 22 and the second locking member 25 can be locked to each other.
Note that one side of the lid 23 may be attached to one side of the housing 20 with a hinge so as to be opened and closed, and a locking member for locking the lid 23 may be provided on the opposite side.

  Fixing members 26 each having an L-shaped cross section are attached to the lower end portions of the outer sides of the two opposite sides 201 and 202 of the housing 20, and a nut 261 is fastened to the bolt 12 attached to the structure 11. And is detachably attached.

As shown in FIG. 1 and FIG. 2, a total of six LED light emitting units 30 are provided at predetermined positions on the bottom surface 205 of the housing 20, three in opposite directions.
As shown in FIG. 2 and FIG. 3, the LED light emitting unit 30 includes an LED mounting block 31 that is an elongated member having a trapezoidal cross section having heat dissipation attached to the bottom surface 205 of the housing 20, and an upper surface 311 of the LED mounting block 31. The heat dissipating material 32 covers the slope 312 to the bottom surface 205. The heat dissipating material 32 is fixed by screwing the screw 35 into the screw hole 313 provided on the upper surface of the LED mounting block 31.

  The LED package 33 is attached to the slope 312 of the LED mounting block 31 via the slope 321 of the heat dissipation material 32. As shown in FIG. 10B, the LED light emitting unit 30 has an angle θ formed by the main optical axis LX and the central axis AX directed to the large-diameter opening 401 (see FIG. 7) of the reflecting plate 40 of 90 degrees or less. It is attached to become.

As shown in FIG. 3A, the LED package 33 includes an LED chip 331 and a substrate 332 on which the LED chip 331 is mounted.
As shown in FIG. 4, a large number of heat radiation ribs 323 can be provided on the upper surface 322 of the heat radiation material 32.

  As shown in FIG. 5 (A), both end surfaces in the longitudinal direction of the heat radiating material 32 of the three LED light emitting units 30 facing in the same direction are connected in a ladder shape by a heat radiating material connecting plate 34. The heat dissipating material 32 is integrated at an interval corresponding to the interval between the LED mounting blocks 31 fixed to the bottom surface 205 of the housing 20, and is placed on the LED mounting block 31 from the direction of arrow A in FIG. Cover and fix with screws 35.

Accordingly, two pieces of the three heat radiating members 32 integrated with the heat radiating member connecting plate 34 are attached to the bottom surface 205 of the housing 20 in opposite directions (see FIG. 1).
As shown in FIG. 5B, a power supply unit 36 that supplies power for lighting to the LED package 33 can be provided by providing a base 341 on the outside of the heat dissipation material connecting plate 34.

As shown in FIGS. 1 and 2, each LED light emitting unit 30 is attached with a reflector 40.
As shown in FIG. 7, the reflecting plate 40 has a shape obtained by cutting a parabolic curved rotating body obtained by rotating a parabola around the central axis AX in half, and the inner surface is a reflecting surface 41. The reflective surface 41 is mirror-finished by aluminum vapor deposition, for example. At the bottom of the reflecting plate 40, there is provided a light emitting portion opening 42 for irradiating the reflecting surface 41 with illumination light from the LED light emitting portion 30, and a semicircular opening at the tip in the irradiation direction (upper end in FIG. 7). The large-diameter opening 401 is provided. Further, a flange member 45 is provided on the surface of the outer peripheral surface 44 in the height direction so as to protrude outward on a surface orthogonal to the central axis AX.

  As shown in FIG. 1 and FIG. 2, six semicircular shapes are formed at the center in the height direction of the housing 20 in order to fit and support a part of the outer shape of the six reflectors 40. A reflection plate attachment plate 43 having a reflection plate opening 431 (see FIG. 6) as an attachment hole is attached. As shown in FIG. 6, a rectangular frame member 432 is provided on the outer periphery of the reflection plate mounting plate 43, and the outer peripheral surface of the frame member 432 has a size and shape that are accommodated inside the housing 20. It has become.

  As shown in FIG. 6, the reflector mounting plate 43 is provided with a total of six reflector openings 431 having a semicircular shape in two rows of three. Reinforcing ribs 433 also serving as louvers are provided between adjacent reflectors 40 on the side surface in the irradiation direction of the reflector plate 43, improving the rigidity of the reflector plate 43 and irradiating it in directions other than the predetermined direction. Regulate the illumination light. The height of the reinforcing rib 433 is a height that does not exceed the frame member 432 (see FIG. 2).

On the other hand, the size of the reflector opening 431 in the reflector mounting plate 43 is slightly smaller than the outer dimension of the reflector 40 at the lower surface position of the flange member 45.
Therefore, when the reflecting plate 40 is inserted into the reflecting plate opening 431 of the reflecting plate mounting plate 43, the lower portion of the reflecting plate 40 protrudes from the reflecting plate mounting plate 43 to the opposite side in the irradiation direction, as shown in FIGS. The flange member 45 is supported in contact with the side surface in the irradiation direction of the reflector mounting plate 43. The reflection plate 40 is attached to the reflection plate attachment plate 43 by two screws 451 and 452 (see FIG. 1) provided at both ends of the flange member 45, and the attachment angle to the reflection plate attachment plate 43 can be adjusted. Yes.
In addition, the upper end of the reflecting plate 40 has a height that does not protrude from the upper end of the frame member 432.

  Accordingly, when the LED light emitting unit 30 is replaced due to a failure or the like, the reflective plate mounting plate 43 is removed, and the orientation of the six reflective plates 40 is adjusted to be integrated with the housing 20. Can be easily removed. Moreover, when attaching the reflecting plate 40, it can attach in the state which adjusted each reflecting plate 40 by attaching the reflecting plate attachment plate 43. FIG.

Next, the direction and irradiation range of illumination light emitted from the LED light emitting unit 30 will be described.
FIG. 11 shows a case where the main optical axis LX of the LED light emitting unit 30 conventionally performed is oriented in a direction orthogonal to the central axis AX of the reflector. In this case, the illumination light emitted from the LED light emitting unit 30 travels in the direction orthogonal to the central axis AX, and is reflected by a part of the lower portion of the reflection surface 41 (effective reflection surface R1).
On the other hand, FIG. 10 shows a case where the main optical axis LX of the LED light emitting unit 30 is provided to be inclined with respect to the central axis AX of the reflector 40, that is, a case where the angle θ is set to 90 degrees or less. . In this case, the illumination light emitted from the LED light emitting unit 30 heads obliquely upward with respect to the central axis AX, and is reflected by most of the reflective surface 41 (effective reflective surface R2).

  As described above, according to the lighting fixture 10 of the first embodiment of the present invention described above, the LED light emitting unit 30 is attached to a predetermined position of the housing 20, and the illumination light from the LED light emitting unit 30 is reflected by the reflecting plate 40. The illumination light is irradiated from the translucent plate 24 of the housing 20. At this time, the reflection plate 40 is attached to the reflection plate attachment plate 43, and the reflection surface 41 is adjusted in a predetermined direction so as to reflect the light from each LED light emitting unit 30 in a predetermined direction. Since the reflection plate attachment plate 43 is detachably attached to the housing 20, the plurality of reflection plates 40 can be removed by removing the reflection plate attachment plate 43 and the reflection plate attachment plate 43 is attached to the case. By attaching to 20 predetermined positions, the plurality of reflecting plates 40 can be attached in a predetermined direction without readjustment, and work efficiency can be greatly improved.

  Moreover, since the reflection plate opening 431 into which a part of the outer shape of the reflection plate 40 is fitted is provided in the reflection plate mounting plate 43, the reflection plate 40 close to the conical shape can be reliably fixed. Further, the reflection plate mounting plate 43 also serves as a blindfold that hides the inside of the housing 20.

  Further, since the reinforcing rib 433 also serving as a louver is provided on the irradiation side surface of the reflector mounting plate 43, the rigidity of the reflector mounting plate 43 can be increased and a certain range can be shielded from light as a louver.

  Moreover, since the LED light emission part 30 is attached to the LED attachment block 31 which has the heat dissipation attached to the housing | casing 20 via the heat radiating material 32, the heat | fever which the LED light emission part 30 emitted is conducted efficiently. Can diffuse.

  Moreover, since the heat radiating material 32 to which the LED light emitting unit 30 is attached is connected and integrated by the heat radiating material connecting plate 34, the plurality of LED light emitting units 30 and the heat radiating material 32 can be removed together, and work efficiency is improved. Will improve. Moreover, since the heat of the heat radiating material 32 can be diffused and radiated through the heat radiating material connecting plate 34, the heat radiating effect is improved.

Further, the LED is arranged such that the angle θ formed by the main optical axis LX of the LED light emitting unit 30 attached near the bottom of the reflecting plate 40 and the central axis AX toward the large-diameter opening 401 of the reflecting plate 40 is 90 degrees or less. Since the light emitting unit 30 is provided, the reflection efficiency is improved.
That is, FIG. 12 shows a light distribution curve when the angle θ formed by the main optical axis LX of the LED light emitting unit 30 and the central axis AX of the reflecting plate 40 is 90 degrees or less, and FIG. 13 shows the LED light emitting unit 30. The light distribution curve is shown when the angle θ formed by the main optical axis LX and the central axis AX of the reflector 40 is 90 degrees. As can be seen from the comparison between FIG. 12 and FIG. 13, it can be seen that the reflection efficiency is about 1.15 times higher when the LED light emitting unit 30 is attached at an angle than when it is attached straight.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment which concerns on this invention is demonstrated.
In addition, suppose that the same code | symbol is attached | subjected to the site | part common to the lighting fixture concerning 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIG. 14B, in the lighting fixture 10B according to the second embodiment of the present invention, the second reflecting plate that reflects the light emitted from the LED light emitting unit 30 and deviating from the reflecting plate 40 to the inside of the reflecting plate. 50 was provided. The lower end of the second reflecting plate 50 is on a line connecting the LED light emitting unit 30 and the large-diameter opening 401 of the reflecting plate 40, and the upper end can be provided up to the same height as the large-diameter opening 401. The inclination of the second reflecting plate 50 is set so that the light emitted from the LED light emitting unit 30 does not go out of the large diameter opening 401.
Thereby, as shown in FIG. 14A, the light reflected by the second reflecting plate 50 has a second effective reflecting surface inside the effective reflecting surface R2 when the second reflecting plate 50 is not provided. R2B is formed.

  As described above, according to the lighting fixture 10B according to the second embodiment of the present invention described above, the light reflected in the direction other than the predetermined direction is reflected by the second reflecting plate 50 in the predetermined direction, so that the reflection efficiency is improved. As well as being able to cut dazzling light leaking from the reflector.

  In addition, the lighting fixture of this invention is not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 20 Case 24 Light transmission board (light emission surface)
30 LED light emitting part 40 Reflecting plate 41 Reflecting surface 43 Reflecting plate mounting plate 431 Reflecting plate opening (mounting hole)
433 Reinforcement rib

Claims (2)

A housing having a light emitting surface for emitting illumination light;
A plurality of LED light emitting units fixed at predetermined positions of the housing;
A plurality of reflecting plates each having a reflecting surface that reflects light from each of the LED light emitting units in a predetermined direction;
Have a, a reflector mounting plate removably attached to the housing is attached adjustably said reflector in a predetermined direction,
The lighting fixture which provided the reinforcing rib which also serves as a louver in the irradiation side of the said reflector mounting plate . The lighting fixture according to claim 1,
The reflector mounting plate is a lighting fixture having a mounting hole into which a part of the outer shape of the reflector is fitted.

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