JP2020053211A - Lighting device - Google Patents

Abstract

To store a substrate smoothly in a storage case, and to make the substrate after storage hard to come off from the storage case.SOLUTION: On a pair of opposing side walls 21 of a storage case 20, a pair of protrusion parts 25 is provided. The pair of protrusion parts 25 is recessed in a circular-arc shape so that a protrusion amount becomes smaller toward a bottom surface of the storage case 20. Then, it is set so that length L of a substrate 16, a distance D between the pair of side walls 21 on the bottom surface side of the storage case 20, a minimum interval where the distance between the pair of protrusion parts 25 becomes minimum, and a distance r from a corner part between the side wall 21 on the left side and the bottom surface to a circular-arc surface of the protrusion part 25 of the side wall 21 on the right side satisfy the condition of D≥L, r≥L>a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting device.

  2. Description of the Related Art Conventionally, there has been known a lighting apparatus including a wiring board of a lighting circuit for lighting an LED and a resin case for holding the wiring board (for example, see Patent Document 1).

  In Patent Document 1, a protruding portion is provided at an opening end of a resin case. The protruding portion is elastically deformed while pressing the wiring board against the protruding portion, so that the wiring board is fitted and held in the resin case. A configuration is disclosed.

JP 2012-113906 A

  However, if the wiring board is fitted into the resin case while pressing the wiring board against the protruding portion as in the related art, stress is generated from the protruding portion toward the wiring board, and stress is applied to the wiring board.

  The present invention has been made in view of such a point, and an object of the present invention is to smoothly store a substrate in a storage case and to make it difficult for the stored substrate to be removed from the storage case.

  A first invention is a lighting device provided with a storage case formed in a box shape having an open upper side and a substrate stored therein, wherein a pair of side walls facing each other among a plurality of side walls of the storage case are provided. A pair of protrusions protruding into the storage case at a position separated upward from the bottom surface of the storage case, and at least one of the pair of protrusions has an amount of protrusion toward the bottom surface of the storage case. And the distance L between the pair of side walls on the bottom surface side of the storage case and the minimum distance a at which the distance between the pair of protrusions is minimized. The distance r from the corner between one of the side walls and the bottom surface of the pair of side walls to the arc surface of the protrusion of the other side wall is set so as to satisfy the following condition: D ≧ L, r ≧ L> a. Is what it is.

  In the first invention, a pair of projecting portions are provided on a pair of side walls facing each other of the storage case. At least one of the pair of protrusions is concave in an arc shape so that the amount of protrusion decreases toward the bottom surface of the storage case. The dimensions of the storage case are set so as to satisfy the above-described conditions with respect to the length of the substrate.

  Here, when storing the substrate in the storage case, first, the substrate is inserted obliquely from the upper opening of the storage case toward the corner between one side wall and the bottom surface, and the one end of the substrate is stored. Contact the corner of the case. Then, with the one end of the substrate kept in contact with the corner of the storage case, the other end of the substrate is rotated toward the bottom surface of the storage case around the corner of the storage case.

  At this time, since the other end of the substrate moves along the arc surface of the protrusion, the substrate and the arc surface of the protrusion do not get caught, and the substrate can be smoothly stored in the storage case.

  Then, the bottom surface of the storage case and the substrate are parallel to each other, and after the substrate is stored in the storage case, for example, even if the storage case is turned over, both ends of the substrate are caught by the protruding portions, so that the substrate is Is hard to come off from the storage case. Thus, it is possible to prevent the board from falling off from the storage case during the assembling work of the lighting device.

  In a second aspect based on the first aspect, each of the pair of projecting portions is recessed in an arc shape such that the projecting amount decreases toward the bottom surface of the storage case.

  In the second invention, each of the pair of protrusions is concave in an arc shape. Therefore, the substrate can be inserted obliquely into the storage case and rotated from either one of the directions of the storage case or the other direction, thereby improving workability.

  A third aspect of the present invention is a lighting device including a storage case formed in a box shape having an open top and storing a substrate therein, wherein a pair of side walls facing each other among a plurality of side walls of the storage case are provided. A pair of protrusions protruding into the storage case at a position separated upward from the bottom surface of the storage case, and at least one of the pair of protrusions has an amount of protrusion toward the bottom surface of the storage case. Is reduced in a stepwise manner along the virtual arc surface so as to reduce the length L of the substrate, the distance D between the pair of side walls on the bottom side of the storage case, and the distance between the pair of protrusions. The condition that the minimum distance a to be the minimum and the distance r from the corner between one side wall and the bottom surface of the pair of side walls to the virtual arc surface of the protrusion of the other side wall is D ≧ L, r ≧ L> a Is set to satisfy

  In the third invention, a pair of projecting portions is provided on a pair of opposed side walls of the storage case. At least one of the pair of protrusions is recessed stepwise along the virtual arc surface so that the amount of protrusion decreases toward the bottom surface of the storage case. The dimensions of the storage case are set so as to satisfy the above-described conditions with respect to the length of the substrate.

  Here, when storing the substrate in the storage case, first, the substrate is inserted obliquely from the upper opening of the storage case toward the corner between one side wall and the bottom surface, and the one end of the substrate is stored. Contact the corner of the case. Then, with the one end of the substrate kept in contact with the corner of the storage case, the other end of the substrate is rotated toward the bottom surface of the storage case around the corner of the storage case.

  At this time, the other end of the substrate moves along the virtual arc surface of the protruding portion, so that the substrate and the step-shaped step portion of the protruding portion are not caught, and the substrate is smoothly stored in the storage case. be able to.

  Then, after the bottom surface of the storage case and the substrate are parallel to each other and are stored in the storage case, for example, even if the storage case is turned over, both ends of the substrate are caught by the protruding portions, so that the substrate is stored. It is hard to come off from the case. Thus, it is possible to prevent the board from falling off from the storage case during the assembling work of the lighting device.

  In a fourth aspect based on the third aspect, each of the pair of projections is recessed in a stepwise shape along a virtual arc surface such that the amount of projection decreases toward the bottom surface of the storage case. is there.

  In the fourth invention, each of the pair of protrusions is recessed stepwise along the virtual arc surface. Therefore, the substrate can be inserted obliquely into the storage case and rotated from either one of the directions of the storage case or the other direction, thereby improving workability.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a spacer portion for supporting the substrate at a position separated upward from a bottom surface of the storage case is further provided.

  According to the fifth aspect, the substrate accommodated in the storage case is supported by the spacer at a position separated upward from the bottom surface of the storage case. Thereby, even if the electronic component is mounted on the lower surface of the substrate, the electronic component can be prevented from interfering with the bottom surface of the storage case.

  ADVANTAGE OF THE INVENTION According to this invention, while accommodating a board | substrate smoothly in a storage case, the board | substrate after storage can be made hard to come off from a storage case.

FIG. 2 is a perspective view illustrating a configuration of a lighting fixture including the lighting device according to the first embodiment. It is a perspective view which shows the structure of a storage case. It is front sectional drawing which shows the structure of a storage case. It is front sectional drawing which shows the structure of the storage case which concerns on this Embodiment 2. It is front sectional drawing which shows the structure of the storage case which concerns on this Embodiment 3. It is front sectional drawing which shows the structure of the storage case which concerns on this Embodiment 4. It is front sectional drawing which shows the structure of the storage case which concerns on this Embodiment 5.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The following description of the preferred embodiments is merely an example in nature, and is not intended to limit the present invention, its application, or its use.

<< Embodiment 1 >>
As shown in FIG. 1, the lighting device 10 includes a housing 11, a light source device 12, a support 14, and a lighting device 15.

  The light source device 12 has a plurality of light emitting elements 13 provided on the lower surface of the housing 11. The housing 11 is attached to the upper end of the support column 14, and the light source device 12 is supported at a predetermined height position. A lighting device 15 is built in the housing 11.

  The lighting device 15 supplies power to the light emitting element 13 to turn on the light emitting element 13, and includes a board 16 (see FIG. 3) on which a control circuit for controlling lighting of the light emitting element 13 is mounted, And a storage case 20 for storing the same.

  As shown in FIG. 2, the storage case 20 is formed in a box shape with an upper opening. The storage case 20 is formed in a rectangular parallelepiped shape. Of the four side walls 21 of the storage case 20, a pair of projecting portions 25 are provided on a pair of opposed side walls 21 (left and right side walls 21 in FIG. 2). ing.

  The pair of protrusions 25 are provided at positions facing each other on the left and right side walls 21 of the storage case 20. Two pairs of the protruding portions 25 are provided at an interval in the front-rear direction of the left and right side walls 21 of the storage case 20. That is, two protrusions 25 are provided on the left side wall 21 and two protrusions 25 are provided on the right side wall 21. The number of the protruding portions 25 is an example, and the protruding portions 25 may be provided on the left and right side walls 21 one by one, or three or more.

  The protruding portion 25 protrudes toward the inside of the storage case 20 at a position away from the bottom surface of the storage case 20 above. The protruding portion 25 has a flat portion 26 having a constant protruding amount from the opening of the storage case 20 toward the bottom surface, and an arc shape so that the protruding amount decreases toward the bottom surface of the storage case 20 continuously from the flat portion 26. And an arcuate portion 27 depressed.

  As shown in FIG. 3, the board 16 is a mounting board on which electronic components (not shown) are mounted, and is stored in the storage case 20 while being mounted on the bottom surface of the storage case 20.

  In the present embodiment, when storing the substrate 16 in the storage case 20, the dimensions of the storage case 20 are devised so that stress is not generated due to the occurrence of stress in the substrate 16. Hereinafter, each dimension of the storage case 20 when viewed from a direction (front-back direction) orthogonal to a direction (left-right direction) in which the pair of side walls 21 face each other will be described.

  Specifically, one of the length L of the substrate 16, the distance D between the pair of side walls 21 on the bottom surface side of the storage case 20, the minimum distance a at which the distance between the pair of protrusions 25 is minimized, and the pair of side walls 21 The distance r from the corner between the side wall 21 (left side in FIG. 2) and the bottom surface to the arc surface of the arc portion 27 of the projection 25 on the other side wall 21 (right side in FIG. 2) satisfies the following condition. Is set.

D ≧ L, r ≧ L> a
In the example shown in FIG. 3, the minimum interval a is the distance between the flat portions 26 of the left and right protrusions 25.

-Procedure for storing the board in the storage case-
Hereinafter, a procedure for storing the board 16 in the storage case 20 will be described. As shown in FIG. 3, first, the substrate 16 is inserted obliquely from the upper opening of the storage case 20 toward the corner between the left side wall 21 and the bottom surface, and the left end of the substrate 16 is inserted into the lower left of the storage case 20. Make contact with the corner.

  Then, while the left end of the substrate 16 is in contact with the lower left corner of the storage case 20, the right end of the substrate 16 is rotated toward the bottom surface of the storage case 20 around the lower left corner of the storage case 20. Let me do it.

  At this time, the right end of the substrate 16 moves along the arc surface of the arc portion 27 of the protruding portion 25, so that the substrate 16 and the arc portion 27 of the protruding portion 25 are not caught, and the substrate 16 is stored in the storage case 20. 16 can be stored smoothly.

  Then, the bottom surface of the storage case 20 and the substrate 16 are in a parallel state, and after the substrate 16 is stored in the storage case 20, for example, even if the storage case 20 is turned over, the left and right ends of the substrate 16 Since the substrate 16 is caught by the arc portion 27 of the protruding portion 25, the substrate 16 is unlikely to come off from the storage case 20. Thereby, it is possible to prevent the board 16 from dropping out of the storage case 20 during the assembling work of the lighting device 15.

  In addition, finally, the substrate 16 is fixed in the storage case 20 by encapsulating a silicone resin or a urethane resin in the storage case 20.

<< Embodiment 2 >>
FIG. 4 is a front sectional view showing the configuration of the storage case according to the second embodiment. Hereinafter, the same portions as those of the first embodiment are denoted by the same reference numerals, and only the differences will be described.

  As shown in FIG. 4, the storage case 20 is formed in a box shape with an open top. Of the four side walls 21 of the storage case 20, a pair of projecting portions 35 are provided on a pair of opposite side walls 21 (left and right side walls 21 in FIG. 4).

  The protruding portion 35 protrudes toward the inside of the storage case 20 at a position above the bottom surface of the storage case 20. The protruding portion 35 has a flat portion 36 having a constant protruding amount from the opening of the storage case 20 toward the bottom surface, and an imaginary arc continuously extending from the flat portion 36 toward the bottom surface of the storage case 20. It has a plurality of steps 37 that are recessed in a stepwise manner along the surface 38. The virtual arc surface 38 extends so as to continuously connect the corners of the plurality of steps 37.

  Then, the length L of the substrate 16, the distance D between the pair of side walls 21 on the bottom surface side of the storage case 20, the minimum distance a at which the distance between the pair of protrusions 35 is minimized, and one of the side walls 21 The distance r from the corner between the bottom surface 21 (left side in FIG. 4) and the bottom surface to the virtual arc surface 38 of the protrusion 35 on the other side wall 21 (right side in FIG. 4) is set to satisfy the following condition. .

D ≧ L, r ≧ L> a
In the example shown in FIG. 4, the minimum interval a is the distance between the flat portions 36 of the left and right protrusions 35.

-Procedure for storing the board in the storage case-
Hereinafter, a procedure for storing the board 16 in the storage case 20 will be described. As shown in FIG. 4, first, the substrate 16 is inserted obliquely from the upper opening of the storage case 20 toward the corner between the left side wall 21 and the bottom surface, and the left end portion is inserted into the substrate 16 at the lower left of the storage case 20. Make contact with the corner.

  Then, while the left end of the substrate 16 is in contact with the lower left corner of the storage case 20, the right end of the substrate 16 is rotated toward the bottom surface of the storage case 20 around the lower left corner of the storage case 20. Let me do it.

  At this time, the right end of the substrate 16 moves along the virtual arc surface 38 of the protrusion 35, so that the substrate 16 and the step-like step 37 of the protrusion 35 do not get caught, and The substrate 16 can be stored smoothly.

  Then, the bottom surface of the storage case 20 and the substrate 16 are in a parallel state, and after the substrate 16 is stored in the storage case 20, for example, even if the storage case 20 is turned over, the left and right ends of the substrate 16 Since the board 16 is hooked on the step portion 37 of the projecting portion 35, the substrate 16 is less likely to come out of the storage case 20. Thereby, it is possible to prevent the board 16 from dropping out of the storage case 20 during the assembling work of the lighting device 15.

<< Embodiment 3 >>
FIG. 5 is a front sectional view showing the configuration of the storage case according to the third embodiment. As shown in FIG. 5, the storage case 20 is formed in a box shape with an upper opening. Of the four side walls 21 of the storage case 20, a pair of projecting portions 25 and 45 are provided on a pair of opposite side walls 21 (left and right side walls 21 in FIG. 5).

  The pair of protrusions 25 and 45 protrude toward the inside of the storage case 20 at a position separated from the bottom surface of the storage case 20 above. The left protruding portion 45 has a flat portion 46 having a constant protruding amount from the opening of the storage case 20 toward the bottom surface, and has a shape in which an end on the bottom surface side of the storage case 20 is cut out.

  The right protruding portion 25 has a flat portion 26 having a constant protruding amount from the opening of the storage case 20 toward the bottom surface, and a flat portion 26 continuous with the flat portion 26 such that the protruding amount decreases toward the bottom surface of the storage case 20. And an arcuate portion 27 depressed in an arc shape.

  One of the length L of the substrate 16, the distance D between the pair of side walls 21 on the bottom surface side of the storage case 20, the minimum distance a at which the distance between the pair of protrusions 25 and 45 is minimized, and one of the pair of side walls 21 The distance r from the corner between the side wall 21 (left side in FIG. 5) and the bottom surface to the arc surface of the arc portion 27 of the protruding portion 25 of the other side wall 21 (right side in FIG. 5) satisfies the following condition. Is set.

D ≧ L, r ≧ L> a
In the example shown in FIG. 5, the minimum distance a is the distance between the flat portions 26, 46 of the left and right projecting portions 25, 45.

  The procedure for storing the substrate 16 in the storage case 20 is substantially the same as that in the first embodiment, and thus the description is omitted.

<< Embodiment 4 >>
FIG. 6 is a front sectional view showing the configuration of the storage case according to the fourth embodiment. As shown in FIG. 6, the storage case 20 is formed in a box shape with an open top. Of the four side walls 21 of the storage case 20, a pair of protruding portions 35 and 45 are provided on a pair of opposite side walls 21 (left and right side walls 21 in FIG. 6).

  The pair of protrusions 35 and 45 protrude toward the inside of the storage case 20 at a position above the bottom surface of the storage case 20. The left protruding portion 45 has a flat portion 46 having a constant protruding amount from the opening of the storage case 20 toward the bottom surface, and has a shape in which an end on the bottom surface side of the storage case 20 is cut out.

  The right protrusion 35 has a flat portion 36 having a constant protrusion amount from the opening of the storage case 20 toward the bottom surface, and a flat portion 36 continuous with the flat portion 36 and having a small protrusion amount toward the bottom surface of the storage case 20. It has a plurality of steps 37 that are recessed in steps along the virtual arc surface 38. The virtual arc surface 38 extends so as to continuously connect the corners of the plurality of steps 37.

  One of the length L of the substrate 16, the distance D between the pair of side walls 21 on the bottom surface side of the storage case 20, the minimum distance a where the distance between the pair of protrusions 35 and 45 is minimum, and one of the pair of side walls 21 The distance r from the corner between the side wall 21 (left side in FIG. 6) and the bottom surface to the virtual arc surface 38 of the projection 35 of the other side wall 21 (right side in FIG. 6) is set so as to satisfy the following condition. ing.

D ≧ L, r ≧ L> a
In the example shown in FIG. 6, the minimum interval a is the distance between the flat portions 36, 46 of the left and right projecting portions 35, 45.

  Note that the procedure for storing the substrate 16 in the storage case 20 is substantially the same as that in the second embodiment, and a description thereof will be omitted.

<< Embodiment 5 >>
FIG. 7 is a front sectional view showing the configuration of the storage case according to the fifth embodiment. As shown in FIG. 7, a plurality of spacer portions 40 stand on the bottom surface of the storage case 20. The spacers 40 are disposed, for example, at four corners of the storage case 20 and support the substrate 16 at a position separated upward from the bottom surface of the storage case 20.

  Thus, it is possible to prevent electronic components (not shown) mounted on the lower surface of the substrate 16 from interfering with the bottom surface of the storage case 20.

  As described above, the present invention provides a highly practical effect that the board can be smoothly stored in the storage case and the board after storage can be hardly removed from the storage case. Useful and industrially available.

DESCRIPTION OF SYMBOLS 15 Lighting device 16 Substrate 20 Storage case 21 Side wall 25 Projection part 27 Arc part 35 Projection part 37 Step part 38 Virtual arc surface 40 Spacer part 45 Projection part

Claims (5)

A lighting device including a storage case formed in a box shape having an open top and a substrate stored therein,
A pair of side walls facing each other out of the plurality of side walls of the storage case are provided with a pair of protrusions protruding into the storage case at a position separated upward from a bottom surface of the storage case,
At least one of the pair of protrusions is concave in an arc shape such that a protrusion amount decreases toward the bottom surface of the storage case,
The length L of the substrate, the distance D between the pair of side walls on the bottom surface side of the storage case, the minimum distance a at which the distance between the pair of protrusions is minimized, and one of the side walls and the bottom surface of the pair of side walls Distance r from the corner to the arc surface of the protrusion of the other side wall,
D ≧ L, r ≧ L> a
A lighting device set to satisfy the condition. In claim 1,
The lighting device, wherein each of the pair of protrusions is concave in an arc shape such that a protrusion amount decreases toward a bottom surface of the storage case. A lighting device including a storage case formed in a box shape having an open top and a substrate stored therein,
A pair of side walls facing each other out of the plurality of side walls of the storage case are provided with a pair of protrusions protruding into the storage case at a position separated upward from a bottom surface of the storage case,
At least one of the pair of protrusions is recessed in a stepwise shape along the virtual arc surface such that the protrusion amount decreases toward the bottom surface of the storage case,
The length L of the substrate, the distance D between the pair of side walls on the bottom surface side of the storage case, the minimum distance a at which the distance between the pair of protrusions is minimized, and one of the side walls and the bottom surface of the pair of side walls Distance r from the corner to the virtual arc surface of the protrusion of the other side wall,
D ≧ L, r ≧ L> a
A lighting device set to satisfy the condition. In claim 3,
The lighting device, wherein each of the pair of protrusions is recessed in a stepwise shape along a virtual arc surface such that the amount of protrusion decreases toward the bottom surface of the storage case. In any one of claims 1 to 4,
A lighting device further comprising a spacer portion that supports the substrate at a position separated upward from a bottom surface of the storage case.

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