JP2018120657A - Clamp structure of wiring cord for illumination and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clamp structure of wiring cord for illumination capable of holding a wiring cord easily and in a stable state without applying a load on the wiring cord.SOLUTION: A clamp structure of wiring cord for illumination includes: a wiring board 11 for illumination; a wiring cord 13 (15a, 15b) for illumination electrically connected to the wiring board 11; and a clamp part 14 for holding the wiring cord 13 between itself and the wiring board 11. The clamp part 14 has: a side wall 14a opposing to a side end surface of the wiring board 11; and a bottom wall 14b opposing to a rear surface of the wiring board 11. The wiring cord 13 (15a, 15b) can be routed to the rear surface side of the wiring board 11 from the surface side of the wiring board 11 via the side end surface side of the wiring board 11, and is held in a state being sandwiched between the side end surface of the wiring board 11 and the side wall 14a of the clamp part 14 and between the rear surface of the wiring board 11 and the bottom wall 14b of the clamp part 14 respectively.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an illumination wiring cord clamp structure and an illumination device.

  In recent illuminating devices, the number of light emitting diodes (LEDs) that employ LEDs as the light source is increasing as the brightness and cost of light emitting diodes (LEDs) increase. LEDs have the advantage of long life and low power consumption. On the other hand, when the temperature is high, the luminous efficiency is reduced and the life is shortened. Therefore, it is necessary to efficiently dissipate the heat generated by the LED to the outside.

  By the way, in a vehicular lamp that employs an LED as a light source, a mounting board on which the LED is mounted and a circuit board on which a drive circuit for driving the LED is provided are separately arranged in the lamp body, and these mounting board and circuit board are arranged. Are electrically connected via a wiring cord called a harness to protect the drive circuit from the heat generated by the LED.

  In addition, in a vehicular lamp, a structure for holding (clamping) a harness in the lamp body is required so that a wiring cord does not move in the lamp body due to vibration during driving of the vehicle (for example, the following patents) See references 1 and 2.)

  For example, Patent Document 1 below proposes a structure that holds a power supply cord by inserting the power supply cord into a cord clamp portion that is formed open at the edge of the wiring board. On the other hand, in Patent Document 2 below, an electric cord is wound around the front and back surfaces of a circuit board by being folded back through end portions of the circuit board and inserted into a plurality of hole-shaped or notched locking portions. There has been proposed a structure that is held in a state and held in a meandering state on the front and back surfaces of a circuit board.

JP-A-8-2222015 Japanese Patent No. 3542000

  However, in the clamp structures described in Patent Documents 1 and 2 described above, a load is easily applied to the wiring cord, and a covering material that covers the surface of the wiring cord at a position where the wiring cord comes into contact with the wiring board after a long period of use. There is a risk of damage or disconnection of the wiring cord.

  In addition, in the clamp structures described in Patent Documents 1 and 2, the assembly workability is very poor, and when the wiring cord is routed, a load is applied to the connection portion between the wiring cord and the wiring board, so that the connection portion is disconnected. There is a risk of it.

  The present invention has been proposed in view of such a conventional situation, and it is possible to easily and stably hold a wiring cord without applying a load to the wiring cord. It is an object of the present invention to provide an illuminating device having a clamp structure of the above and a clamp structure of such a wiring cord for illumination.

In order to achieve the above object, the present invention provides the following means.
[1] A wiring board for illumination;
A wiring cord for illumination electrically connected to the wiring board;
A clamp portion for holding the wiring cord with the wiring board;
The clamp part has a side wall facing the side end surface of the wiring board and a bottom wall facing the back surface of the wiring board,
The wiring cord is routed from the front surface side of the wiring substrate to the back surface side of the wiring substrate via the side end surface side of the wiring substrate, and between the side end surface of the wiring substrate and the side wall of the clamp portion. An illumination wiring cord clamp structure, wherein the illumination wiring cord is clamped between and between the back surface of the wiring board and the bottom wall of the clamp portion.
[2] The wiring cord is routed from the front surface side to the back surface side of the wiring substrate through a notch portion provided on either one of the side end surface of the wiring substrate and the side wall of the clamp portion. The illumination wiring cord clamp structure according to [1] above, wherein:
[3] The illumination wiring cord clamp according to [2], wherein the wiring board has an engagement recess to be engaged with the clamp portion at a position where the notch portion is formed. Construction.
[4] The clamp portion has a pair of regulating walls formed so as to rise from the bottom wall along the side wall.
The wiring for illumination according to any one of [1] to [3], wherein the wiring cord is routed to the back side of the wiring board through the pair of regulating walls. Cord clamp structure.
[5] In any one of [1] to [4], a protective member that covers a surface of the wiring cord is provided at a position where the wiring cord comes into contact with the wiring board. The clamp structure of the wiring cord for illumination as described.
[6] The wiring board is attached on the surface of the bracket,
The wiring for illumination according to any one of [1] to [5], wherein the wiring cord is held in a state of being sandwiched between the bracket and a bottom wall of the clamp portion. Cord clamp structure.
[7] An illumination device comprising the illumination wiring cord clamp structure according to any one of [1] to [6].

  As described above, according to the present invention, it is possible to hold the wiring cord easily and stably without imposing a load on the wiring cord, and the illumination wiring cord clamp structure and such illumination. It is possible to provide the illuminating device provided with the clamp structure of the wiring cord for a vehicle.

BRIEF DESCRIPTION OF THE DRAWINGS It is a vehicle lamp which concerns on one Embodiment of this invention, (a) is the front view, (b) is the back view. It is a perspective view which shows the clamp structure of the wiring cord for illumination with which the vehicle lamp shown in FIG. 1 is provided. FIG. 3 is a perspective view of the clamp structure of the illumination wiring cord shown in FIG. 2. It is a disassembled perspective view of the clamp structure of the wiring cord for illumination shown in FIG. It is a top view of the clamp structure of the wiring cord for illumination shown in FIG. It is the side view which looked at the clamp structure of the wiring cord for illumination shown in FIG. 2 from the transversal direction. It is the side view which looked at the clamp structure of the wiring cord for illumination shown in FIG. 2 from the longitudinal direction. It is a side view which shows another structural example of the clamp structure of the wiring cord for illumination shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the drawings used in the following description, in order to make each component easy to see, the scales of the dimensions may be different depending on the component, and the dimensional ratio of each component is not always the same as the actual. Absent.

  As an embodiment of the present invention, for example, a description will be given of a clamp structure for an illumination wiring cord included in the vehicular lamp 1 shown in FIGS. 1A and 1B and the vehicular lamp 1 shown in FIGS. 1A is a front view of the vehicular lamp 1, and FIG. 1B is a rear view of the vehicular lamp 1. FIG. FIG. 2 is a perspective view showing the clamp structure of the illumination wiring cord. FIG. 3 is a perspective view of the clamp structure of the illumination wiring cord. FIG. 4 is an exploded perspective view of a clamp structure for an illumination wiring cord. FIG. 5 is a plan view of the clamp structure of the illumination wiring cord. FIG. 6 is a side view of the illumination wiring cord clamp structure as viewed from the short side. FIG. 7 is a side view of the illumination wiring cord clamp structure viewed from the longitudinal direction. FIG. 8 is a side view showing another configuration example of the clamp structure of the illumination wiring cord.

  In the drawings shown below, an XYZ orthogonal coordinate system is set, the X-axis direction is the front-rear direction (length direction) of the vehicle lamp, the Y-axis direction is the left-right direction (width direction) of the vehicle lamp, and the Z-axis direction. Are shown as the vertical direction (height direction) of the vehicular lamp 1.

  The vehicular lamp 1 of the present embodiment is a lighting device to which the present invention is applied, for example, at both corner portions on the rear end side of the vehicle (not shown) (in this embodiment, the corner portion on the left rear end side). The present invention is applied to a rear combination lamp to be mounted. In the following description, “front”, “rear”, “left”, “right”, “upper”, and “lower” refer to when the vehicle lamp 1 is viewed from the front (rear side of the vehicle) unless otherwise specified. Means the respective directions. Therefore, each direction when the vehicle is viewed from the front (front of the vehicle) is a direction in which front, rear, left and right are reversed.

  Specifically, as shown in FIGS. 1A and 1B, the vehicular lamp 1 includes a housing 2 whose front surface is open and a transparent lens cover 3 that covers the opening of the housing 2. 2 and the lens cover 3 constitute a lamp body 4.

  The vehicular lamp 1 includes a tail lamp / brake lamp 5a that emits red light, a blinker lamp 5b that emits orange light, and a back lamp 5c that emits white light. It is composed. The housing 2 constitutes a lamp chamber corresponding to each of the lamps 5a to 5c. The lens cover 3 constitutes an outer lens corresponding to each of the lamps 5a to 5c.

  By the way, in the vehicular lamp 1 of the present embodiment, the lamp body 4 includes a mounting board on which an LED serving as a light source for the tail lamp and brake lamp 5a described above is mounted, and a circuit board on which a drive circuit for driving the LED is provided. The mounting board and the circuit board are electrically connected via a wiring cord called a harness to protect the drive circuit from the heat generated by the LED.

  Further, in the vehicular lamp 1 according to the present embodiment, the harness is held (clamped) in the lamp body 4 so that the wiring cord does not move in the lamp body 4 due to vibration or the like when the vehicle travels. 2 to 7, an illumination wiring cord clamp structure (hereinafter simply referred to as a clamp structure) 10 to which the present invention is applied is provided.

  Specifically, the clamp structure 10 holds the harness 13 between the circuit board 11, the bracket 12 to which the circuit board 11 is attached, the harness 13 that is electrically connected to the circuit board 11, and the circuit board 11. The clamp part 14 to be provided is provided.

  The circuit board 11 is a printed wiring board (PWB) provided with a driving circuit for driving the LEDs described above as a wiring board for illumination. The bracket 12 is made of an insulating resin member having a mounting surface 12 a corresponding to the circuit board 11. The circuit board 11 is mounted on the mounting surface 12a of the bracket 12 by screws. For this reason, the circuit board 11 is provided with a through-hole 11a through which the screw passes. On the other hand, the bracket 12 is provided with a screw hole 12b in which a screw is fastened.

  The harness 13 includes a plurality (two in this embodiment) of wiring cords 15a and 15b serving as lighting wiring cords, and a coupler 16 attached to one end side of the wiring cords 15a and 15b. The harness 13 is electrically connected to the circuit board 11 by inserting a coupler 16 into a connector 17 provided on the surface of the circuit board 11.

  The harness 13 is routed from the front surface (upper surface) side of the circuit board 11 to the back surface (lower surface) side of the circuit board 11 via the side end surface side of the circuit board 11. Although not shown, the other end of the harness 13 is electrically connected to the mounting board by inserting a coupler attached to the other end of the harness 13 into the connector of the mounting board on which the LED is mounted. Has been. Thereby, in the vehicle lamp 1, lighting of the LED mounted on the mounting board can be controlled by the drive circuit.

  The clamp part 14 consists of a part of housing 2 mentioned above, and has the side wall 14a facing the side end surface of the circuit board 11, and the bottom wall 14b facing the back surface of the circuit board 11 (bracket 12). The side wall 14a is constituted by one side surface of a protruding portion protruding from the bottom wall 14b.

  The harness 13 (wiring cords 15a and 15b) is routed from the front surface (upper surface) side to the back surface (lower surface) side of the circuit board 11 while being bent along the side wall 14a and the bottom wall 14b. In addition, the clamp portion 14 has a rounded shape (curvature R) at each corner so that a load is not applied to the harness 13 (wiring cords 15a and 15b) bent along each corner.

  In the clamp structure 10 of this embodiment, between the side end surface of the circuit board 11 and the side wall 14a of the clamp part 14, and between the back surface (bracket 12) of the circuit board 11 and the bottom wall 14b of the clamp part 14, Each harness 13 (wiring cords 15a and 15b) is held (clamped) in a sandwiched state.

  Specifically, a notch 18 is provided on the side end surface of the circuit board 11. The harness 13 is routed from the front surface (upper surface) side to the rear surface (lower surface) side of the circuit board 11 through the notch 18. The notch 18 is not limited to the configuration provided on the side end surface of the circuit board 11 described above, but may be configured on the side wall 14 a of the clamp unit 14.

  Further, the circuit board 11 has an engagement recess 19 that is engaged with the clamp portion 14 at a position where the notch portion 18 is formed. The circuit board 11 is positioned with respect to the clamp part 14 when the clamp part 14 is engaged with the engagement recess 19.

  In the clamp structure 10 of the present embodiment, the notch 18 is formed at the position where the engagement recess 19 is provided, so that the circuit board 11 is positioned with respect to the clamp 14 and at the same time the notch 18. The harness 13 (wiring cords 15a and 15b) can be held in a stable state between the side end surface of the circuit board 11 and the side wall 14a of the clamp portion 14.

  In the clamp structure 10 of the present embodiment, since the circuit board 11 is mounted on the mounting surface 12a of the bracket 12, the same engagement is provided at a position where the bracket 12 overlaps with the engagement recess 19 of the circuit board 11. A recess 19A is provided. In addition, the bracket 12 is formed with a contact piece 12c that is in contact with the clamp portion 14 described above and bent upward. On the other hand, the bottom wall 14b of the clamp part 14 is provided with a step part 14c that regulates the position of the bracket 12 in the height direction by contacting the back surface of the bracket 12.

  The clamp part 14 has a pair of regulation walls 20a and 20b formed so as to rise from the bottom wall 14b along the side wall 14a. The harness 13 is routed to the back surface (lower surface) side of the circuit board 11 through the pair of restriction walls 20a and 20b. Further, the space between the pair of regulating walls 20a and 20b overlaps with the notch 18 in plan view.

  In the clamp structure 10 of the present embodiment, the harness 13 (wiring cords 15a and 15b) located on the back surface (lower surface) side of the circuit board 11 is regulated in the width direction by providing such a pair of regulating walls 20a and 20b. can do. As a result, the harness 13 (wiring cords 15a and 15b) routed to the back surface (lower surface) side of the circuit board 11 can be stably held between the pair of regulation walls 20a and 20b.

  Moreover, in the clamp structure 10 of this embodiment, the height position of the circuit board 11 with respect to the bottom surface 14a of the clamp part 14 is regulated by contacting the back surface of the circuit board 11 to the upper ends of the pair of regulation walls 20a and 20b. can do. Thereby, the harness 13 (wiring cords 15a and 15b) routed to the back surface (lower surface) side of the circuit board 11 is placed between the back surface (bracket 12) of the circuit board 11 and the bottom wall 14b of the clamp portion 14. It can be held in a stable state.

  As described above, in the clamp structure 10 of the present embodiment, the harness 13 (wiring cords 15a and 15b) is easily and stably held without applying a load to the harness 13 (wiring cords 15a and 15b). It is possible.

  Therefore, in the vehicular lamp 1 of this embodiment having such a clamp structure 10, the harness 13 does not move in the lamp body 4 due to vibrations when the vehicle travels, and thus covers the surfaces of the wiring cords 15 a and 15 b. It is possible to prevent the covering material from being damaged and the wiring cords 15a and 15b from being disconnected.

  Further, in the vehicular lamp 1 according to the present embodiment, the harness 13 (wiring cords 15a and 15b) can be easily routed and is excellent in assembling workability. Therefore, the circuit board 11 can be easily attached to the housing 2 via the bracket 12. It can be assembled.

In addition, this invention is not necessarily limited to the thing of the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, as shown in FIG. 8, a protective member 21 that covers the surfaces of the wiring cords 15 a and 15 b may be provided at positions where the harness 13 (wiring cords 15 a and 15 b) are in contact with the circuit board 11. For the protective member 21, for example, an insulating tape can be used.

  In the vehicular lamp 1 of the present embodiment, such a protective member 21 is provided on the harness 13 (wiring cords 15a and 15b), so that a covering material that covers the surfaces of the wiring cords 15a and 15b by contact with the circuit board 11 is provided. It is possible to prevent damage or disconnection of the wiring cords 15a and 15b.

  In the above embodiment, the case where the present invention is applied to the rear-side vehicle lamp that constitutes the above-described rear combination lamp is illustrated, but the vehicle lamp to which the present invention is applied is The present invention can be applied not only to lamps but also to front-side vehicle lamps such as a vehicle headlamp. As the light source, for example, a halogen lamp, an HID lamp, a laser diode (LD), or the like can be used in addition to the LED described above.

  Moreover, although the present invention is suitably used for a vehicle lamp to which the above-described vehicle vibration or the like is applied, the lighting device to which the present invention is applied is not necessarily limited to the above-described vehicle lamp. That is, the present invention can also be applied to a general lighting device such as a residential lighting device.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Housing 3 ... Lens cover 4 ... Lamp body 5a ... Tail lamp / brake lamp 5b ... Winker lamp 5c ... Back lamp 10 ... Clamp structure 11 ... Circuit board 12 ... Bracket 13 ... Harness 14 ... Clamp part 14a ... Side wall 14b ... Bottom wall 15a, 15b ... Wiring cord 16 ... Coupler 17 ... Connector 18 ... Notch 19, 19A ... Engaging recess 20a, 20b ... Restriction wall 21 ... Protection member

Claims (7)

A wiring board for illumination;
A wiring cord for illumination electrically connected to the wiring board;
A clamp portion for holding the wiring cord with the wiring board;
The clamp part has a side wall facing the side end surface of the wiring board and a bottom wall facing the back surface of the wiring board,
The wiring cord is routed from the front surface side of the wiring substrate to the back surface side of the wiring substrate via the side end surface side of the wiring substrate, and between the side end surface of the wiring substrate and the side wall of the clamp portion. An illumination wiring cord clamp structure, wherein the illumination wiring cord is clamped between and between the back surface of the wiring board and the bottom wall of the clamp portion.   The wiring cord is routed from the front surface side to the back surface side of the wiring substrate through a notch portion provided on either one of the side end surface of the wiring substrate and the side wall of the clamp portion. The illumination wiring cord clamp structure according to claim 1.   The said wiring board has the engaging recessed part engaged with the said clamp part in the position in which the said notch part was formed, The clamp structure of the wiring cord for illumination of Claim 2 characterized by the above-mentioned. The clamp part has a pair of regulating walls formed along the side wall from the bottom wall,
The illumination wiring cord clamp according to any one of claims 1 to 3, wherein the wiring cord is routed to the back side of the wiring substrate through the pair of restriction walls. Construction.   5. The illumination wiring cord according to claim 1, wherein a protective member that covers a surface of the wiring cord is provided at a position where the wiring cord comes into contact with the wiring substrate. Clamp structure. The wiring board is attached on the surface of the bracket,
The said wiring cord is hold | maintained in the state inserted | pinched between the said bracket and the bottom wall of the said clamp part, The clamp of the wiring cord for illumination as described in any one of Claims 1-5 characterized by the above-mentioned. Construction.   An illuminating device comprising the illumination wiring cord clamp structure according to any one of claims 1 to 6.

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