JP6459468B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device that illuminates the surroundings with indirect illumination.

  Conventionally, the type of lighting device does not illuminate the light from the light source directly to the user (direct illumination), but illuminates the surroundings by reflecting the light from the light source on the ceiling or wall (indirect illumination) Are well known (see Patent Documents 1, 2, etc.). Patent Documents 1 and 2 include a pair of left and right light sources (LEDs), and illuminate the surroundings by reflecting light from these light sources to a ceiling, a wall, or the like.

JP 2013-91472 A JP 2011-44430 A

  However, the interior shape of the vehicle indirectly illuminated by the lighting device varies depending on the type of railway or aircraft. Therefore, even if a satisfactory brightness can be obtained in a certain railroad or aircraft, it is not possible to illuminate a necessary location in other railroads or aircraft. There was a problem that a difficult part occurred.

  The objective of this invention is providing the illuminating device which can optimize the illumination direction of indirect illumination by adjusting the position of a light source part.

  The illumination device that solves the above problem is a position adjustment that can adjust the illumination direction of indirect illumination by the light source unit by changing the position of the light source unit in a configuration in which the surroundings are indirectly illuminated by a light source unit that includes an LED. Equipped with mechanism.

  According to this configuration, the position adjustment mechanism that can change the position of the light source unit is provided in the illumination device that illuminates the surroundings by the indirect illumination with the light source unit including the LED. Therefore, since the illumination direction of the indirect illumination by the light source unit can be adjusted as appropriate, the illumination direction can be optimized. Therefore, it is advantageous to illuminate the whole area brightly without generating a portion where the indirect illumination becomes partially dark.

  According to the present invention, it is possible to optimize the illumination direction of indirect illumination by adjusting the position of the light source unit.

The schematic diagram of arrangement | positioning of the illuminating device in one Embodiment. The expansion perspective view of the edge part periphery of an illuminating device. The perspective view which looked at the illuminating device from the inner surface side. The exploded perspective view of an illuminating device. The perspective view which looked at the illuminating device from the outer surface side. The longitudinal cross-sectional view of an illuminating device. (A) is a state diagram when the rotation of the light source unit becomes free without restriction by the position adjustment mechanism, and (b) is a state diagram when the rotation position of the light source unit is fixed by the position adjustment mechanism. Schematic of the position adjustment mechanism of another example. Schematic of the position adjustment mechanism of another example.

Hereinafter, an embodiment of a lighting device will be described with reference to FIGS.
As shown in FIG. 1, the lighting device 1 is a type of lamp that brightly illuminates the surroundings with indirect lighting, and is used as an interior lamp of, for example, a railway (such as a bullet train) or an aircraft. The lighting device 1 illuminates the interior of the vehicle by illuminating the vicinity of the ceiling by being assembled and fixed to the ceiling or the like in the vehicle. The illuminating device 1 of this example illuminates the inside of the vehicle from both sides in the vehicle width direction by being arranged on both sides in the vehicle width direction (the direction of arrow W in FIG. 1) in the vehicle.

  As shown in FIGS. 2 to 4, the lighting device 1 includes a main body frame 2 that forms a frame portion of the lighting device 1 and a lighting unit 3 that is one unit of lighting in the lighting device 1. In the case of this example, a plurality of lighting units 3 (two in this example) are provided, one lighting unit 3 is 3a, and the other lighting unit 3 is 3b. The illumination units 3a and 3b irradiate light in directions facing each other to indirectly illuminate the surroundings. In the case of this example, the illumination unit 3a illuminates the seat side (passenger side) in the vehicle, and the illumination unit 3b illuminates the luggage shelf side.

  The illumination unit 3 a includes a light source unit 4 that outputs illumination light of indirect illumination and a position adjustment mechanism 5 that adjusts the irradiation direction of the light source unit 4. The position adjustment mechanism 5 of the present example can fix the light source unit 4 at the current position regardless of the position of the light source unit 4 in the rotation range with respect to the light source unit 4 that can be rotated. Is formed. The illumination unit 3b has the same structure as the illumination unit 3a.

  As shown in FIGS. 2 and 3, the light source unit 4 of the illumination unit 3 a includes an LED 6 serving as an illumination light source, a frame unit 7 forming a case of the light source unit 4, and a window unit 8 for extracting the irradiation light of the LED 6 to the outside. And a flange 9 that serves as a presser for the window 8. On the side of the light source unit 4, there is provided a light transmission unit 10 that draws the light of the LED 6 to the side of the light source unit 4. The light source unit 4 of the illumination unit 3b has the same structure as the light source unit 4 of the illumination unit 3a.

  The frame pieces 11 at both ends of the main body frame 2 are provided with through holes 13 through which fasteners (for example, “screws”) 12 for attaching and fixing the lighting device 1 to the assembling positions are passed. The illuminating device 1 of this example is attached and fixed to an assembling location such as an in-car ceiling by passing the fasteners 12 through these through holes 13 and fastening them to an assembling location (such as an in-vehicle ceiling) of the illuminating device 1. In the main body frame 2, a cutout portion 14 is formed below the through hole 13 so as not to obstruct the passage of the fastener 12.

  As shown in FIG. 4, the position adjustment mechanism 5 includes a support shaft 15 that serves as an axis for rotating the light source unit 4, and a movable unit 16 that is rotatably attached to the support shaft 15. The support shaft 15 is formed in an elongated rectangular plate shape, and is provided in one zone in the longitudinal direction of the illumination device 1 (X-axis direction in FIG. 4). The light source section 4 is integrally attached and fixed to the movable section 16 with screws or the like, and the light source section 4 and the movable section 16 are movable (rotatable) integrally around the support shaft 15. The movable portion 16 is formed in a bottomless cylindrical shape (pipe shape), and the support shaft 15 is slidably accommodated therein. The movable portion (pipe material) 16 is formed so as to extend in the longitudinal direction of the lighting device 1 (X-axis direction in FIG. 4) so as to cover almost the entire support shaft 15.

  The position adjustment mechanism 5 realizes the positioning of the light source unit 4 by fixing the movable unit 16 to the support shaft 15 by fastening with a fastener (an example is “screw”) 17. Specifically, the movable portion 16 is formed with a through hole 18 through which the fastener 17 is passed, and the support shaft 15 is provided with an attachment portion (an example is “screw hole”) capable of fastening the fastener 17. ]) 19 is formed. The through hole 18 of the movable part 16 is a long hole (slit hole) extending along the rotation direction of the light source part 4. A set of the through hole 18 and the attachment portion 19 is provided at a plurality of locations in the position adjustment mechanism 5 (in this example, 4 locations in the illumination unit 3a and 4 locations in the illumination unit 3b).

  The support shaft 15 of the illumination unit 3a is screwed, for example, to the frame piece 11 of the main body frame 2 and the support piece 11a that supports the frame piece 11. Further, the support shaft 15 of the illumination unit 3b is fixed to the connecting piece 11b attached and fixed to the illumination unit 3a and the support piece 11a, for example, by screws. The connecting piece 11b of this example is fastened together with a common screw together with the support shaft 15 of the lighting unit 3a.

  The lighting device 1 includes a protective plate 22 that blocks light from the light source unit 4 at the bottom of the main body frame 2 (lower part in the assembled state). The protection plate 22 is formed in a single band along the longitudinal direction of the lighting device 1 (X-axis direction in FIG. 4) according to the length of the light source unit 4. The protective plate 22 is provided to prevent the light from the light source unit 4 from being dazzled or to prevent the broken pieces from falling downward when a member of the lighting device 1 is damaged. A pair of receiving portions 23 are formed at both ends of the protective plate 22 so as to be able to receive a fallen object from above.

  As shown in FIG. 5, the protective plate 22 is formed with a plurality of through holes 24 (two in this example) through which the fasteners 12 for assembling the illuminating device 1 at the assembly location are passed, and the position adjustment mechanism 5 is fastened. A plurality (eight in this example) of through-holes 25 through which the tool 17 is passed are also formed. The fastener 17 of the position adjusting mechanism 5 of this example can be screwed from below. As described above, if the attachment work of the fastener 17 can be performed from below, the work of fixing the position of the light source unit 4 can be performed while the lighting device 1 is attached to the assembly location.

  As shown in FIG. 6, the illumination unit 3a and the illumination unit 3b are arranged at different height positions in the height direction of the illumination device 1 (Z-axis direction in FIG. 6). This is because it is attached to the stepped portion existing on the ceiling, so that the step can be assembled while absorbing the stepped portion. In the case of this example, the illumination unit 3a is arranged at a high position, and the illumination unit 3b is arranged at a low position. The light irradiation range (illumination angle) θ of the LED 6 is set to about 120 °, for example.

Next, the effect | action of the illuminating device 1 is demonstrated using FIG.5 and FIG.7.
As shown in FIG. 5, when the lighting device 1 is assembled to the assembly location (ceiling inside the vehicle), both ends of the main body frame 2 are assembled to the assembly location with the fasteners 12. The fastener 12 is passed through a through-hole 24 provided in the protective plate 22 and is inserted into the through-hole 13 through the notch 14 and the body frame 2 is sandwiched between the fasteners 12 and the vehicle interior ceiling. Screwed into the tip (screw hole or the like: not shown).

  As shown in FIG. 7A, when adjusting the illumination direction of the light source unit 4, each fastener 17 is loosened with a tool such as a screwdriver inserted from the through hole 25 of the protective plate 22. . At this time, since the state in which the support shaft 15 is pressed against the inner surface of the movable portion 16 is released, a certain gap is formed between the inner surface of the movable portion 16 and the support shaft 15, and the movable portion 16 is in contact with the support shaft 15. On the other hand, it becomes slidable. That is, the movable part 16 becomes free, and the turning operation around the axis P of the light source part 4 is permitted. Thereby, the light source part 4 can be rotated and the irradiation direction of the light source part 4 can be adjusted.

  As shown in FIG. 7B, when the rotation position of the light source unit 4 has been adjusted, a tool such as a screwdriver is again passed through the through hole 25 of the protective plate 22, and the fastener 17 is closed again by this tool. At this time, when the fastener 17 is tightened, the support shaft 15 is strongly pressed against the inner surface of the movable portion 16 in accordance with the tightening tool 17, thereby fixing each other. That is, the turning operation around the axis P of the light source unit 4 becomes impossible. Thereby, the rotation position of the light source part 4 is fixed.

  FIGS. 7A and 7B illustrate an example of adjusting the position of the light source unit 4 of the illumination unit 3a. However, when the illumination direction of the light source unit 4 of the illumination unit 3b on the opposite side is to be switched, the same applies. The illumination direction of the light source unit 4 is adjusted by the above operation. In this way, the illumination direction is optimized in both the light source sections 4 of the illumination units 3a and 3b, which is advantageous for brightly illuminating a necessary portion.

According to the configuration of the present embodiment, the following effects can be obtained.
(1) In the illuminating device 1 that illuminates the surroundings by indirect illumination with the light source unit 4 in which the LEDs 6 are arranged, the position adjusting mechanism 5 that can change the position of the light source unit 4 is provided. Therefore, the illumination direction of the indirect illumination by the light source unit 4 can be adjusted as appropriate, so that the illumination direction can be optimized. Therefore, it is advantageous to illuminate the whole area brightly without generating a portion where the indirect illumination becomes partially dark.

  (2) A plurality of light source units 4 are provided so as to illuminate light in directions opposite to each other. Therefore, since it is possible to indirectly illuminate a plurality of directions with one lighting device 1, it is more advantageous to brightly illuminate the whole.

  (3) The position adjustment mechanism 5 supports the light source unit 4 so as to be rotatable about the axis P of the support shaft 15 and adjusts the rotation position to switch the illumination direction of the light source unit 4. Takes the structure of an expression. Therefore, the structure of the position adjusting mechanism 5 can be a simple structure called a rotation type. Moreover, since it becomes possible to switch an illumination direction by the operation | work of turning the light source part 4, the ease of adjustment of an illumination direction is also securable.

  (4) The position adjustment mechanism 5 makes it possible to perform the operation of switching the illumination direction of the light source unit 4 (the operation of stopping the fastener 17 that fixes the rotation position of the light source unit 4) from below, so that the illumination device 1 is operated. It is possible to fix the position of the light source unit 4 as it is assembled to the assembly location (car ceiling). In the case of this example, this is realized by forming the through hole 25 through which the fastener 17 is passed through the protective plate 22 with the fastening direction of the fastener 17 being the upward direction. Therefore, in performing the operation of adjusting the illumination direction of the light source unit 4, it is not necessary to impose a troublesome operation such as removing the illumination device 1 from the ceiling, which is advantageous in this respect.

  (5) Since the protective plate 22 is provided in the lower part of the lighting device 1, even if the light source unit 4 and its surrounding components are damaged, this can be received by the protective plate 22. Therefore, it is possible to make it difficult for parts due to damage or the like to reach the passenger side. Moreover, since the receiving part 23 standing upwards was formed in the both ends of the protection plate 22, it can also be received by the receiving part 23 at components, such as a failure | damage.

  (6) The light source units 4 of the illumination units 3a and 3b are shifted (offset) in the height direction of the illumination device 1 (Z-axis direction in FIG. 6 and the like). Therefore, even if there is a step in the assembly destination of the lighting device 1, it can be attached to this step portion. Further, if the light source units 4 of the illumination units 3a and 3b are shifted in the height direction, the light source units 4 of the illumination units 3a and 3b can be arranged close to each other. Therefore, it is advantageous for reducing the size of the lighting device 1 in the width direction (Y-axis direction in FIG. 6 and the like).

  (7) The light transmission part 10 which draws out the light of the LED 6 to the side is provided on the side part of the light source part 4. Therefore, when a plurality of lighting devices 1 are arranged and attached in the length direction (X-axis direction in FIG. 3 and the like), it is possible to ensure the brightness of illumination at the boundary between the lighting devices 1 adjacent to each other.

(8) The light source unit 4 is provided with a flange 9 that serves as a presser for the window 8. Therefore, the window portion 8 can be firmly fixed to the frame portion 7.
(9) The position adjustment mechanism 5 has a structure in which the rotation position of the light source unit 4 is fixed by using the fastening of the fastener 17. Therefore, the light source unit 4 can be firmly fixed at a determined position by a simple configuration using the fastener 17.

Note that the embodiment is not limited to the configuration described so far, and may be modified as follows.
As shown in FIG. 8, the position adjustment mechanism 5 may have a structure in which the light source unit 4 is rotated by guiding the guide pin 31 into the guide groove 32. In this case, the guide pin 31 may be provided in the light source unit 4 and the guide groove 32 may be provided in the main body frame 2, or this combination may be reversed.

  As shown in FIG. 9, at both ends of the light source unit 4 (FIG. 9 shows only one side), a rotating shaft 35 protruding outward is integrally formed, and after setting the rotating position, the rotating shaft 35 The rotation position of the light source unit 4 may be positioned by creating a state in which the rotation is prevented by the stopper 36 on the main body frame 2 side.

The position fixing operation of the light source unit 4 may be performed from the side of the lighting device 1, for example.
The frame part 7 of the light source part 4 and the movable part 16 of the position adjusting mechanism 5 may be formed by integral extrusion molding.

-The position adjustment mechanism 5 is not limited to the structure of screwing. For example, it is possible to change to another structure, such as positioning the protrusion by locking it to the notch on the other side.
The position adjusting mechanism 5 may be stopped by a jig such as a separate locking pin.

-The pair of left and right light source units 4 may be arranged at the same height.
-The movable part 16 does not need to be formed over the whole length direction belt | band | zone of the illuminating device 1, and may be formed partially.

The position adjustment mechanism 5 may be a structure using a hinge.
The illumination device 1 may be capable of adjusting the position of only a specific light source unit 4 among the plurality of light source units 4.

-A light source is not restricted to LED, You may change to another member.
The light source unit 4 is not limited to a plurality and may be one. Or it is good also considering the light source part 4 as three or more.

The position adjusting mechanism 5 may position the light source unit 4 that slides.
-Fasteners 12 and 17 may be changed into members other than a screw.
-The illuminating device 1 is not limited to being applied to a vehicle interior lamp, but can be applied to various devices, devices, and systems.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(A) In the illumination device, a plurality of the light source units are provided, and the plurality of the light source units are arranged at different height positions in the device height direction. According to this structure, it becomes possible to make the frame shape of an illuminating device into a step shape. Therefore, even if the assembling part of the lighting device has a step shape, the lighting device can be assembled at the step.

  DESCRIPTION OF SYMBOLS 1 ... Illuminating device, 4 ... Light source part, 5 ... Position adjustment mechanism, 6 ... LED, P ... The axis | shaft when a light source part rotates.

Claims (4)

In an illumination device that indirectly illuminates the surroundings with a light source unit equipped with LEDs,
By changing the position of the light source unit, provided with a position adjustment mechanism capable of adjusting the illumination direction of indirect illumination by the light source unit ,
The position adjusting mechanism includes a support shaft serving as an axis for rotating the light source unit, a movable unit rotatably attached to the support shaft, and a fastener for fixing the movable unit to the support shaft by clamping. The movable portion is formed with a long through hole for passing the fastener, and the support shaft is formed with an attachment portion capable of fastening the fastener, and the rotational position of the movable portion The illumination device is characterized in that the illumination direction of the light source unit is switched by adjusting . 2. The light source unit according to claim 1, wherein a plurality of the light source units are provided so as to illuminate light in directions facing each other, and the position adjusting mechanism is provided in at least one of the plurality of light source units provided. The lighting device described. 3. The lighting device according to claim 1, wherein a set of the through hole and the mounting portion constituting the position adjusting mechanism is provided at a plurality of locations along an axial direction of the support shaft. The position adjustment mechanism is configured to fix the position of the light source unit while the lighting device is attached to the assembly location by enabling the work for fixing the rotation of the light source unit to be performed from below or from the side. The illuminating device according to any one of claims 1 to 3, wherein