JP2010105418A - Lamp unit mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lamp unit mounting structure which allows the use of a lamp with a greater wattage than that of a conventional one. <P>SOLUTION: A lamp functional part A emitting heat is covered with a photo-reflective heat radiating member 40 formed of metal having excellent heat radiating performance so as to increase a radiating area, whereby the heat of the lamp functional part A can be radiated efficiently. The photo-reflective heat radiating member 40 formed of metal attached to the lamp functional part A has decoration part fixing means 44 and 45 to fix a decoration part B so as to fix the decoration part B, so that a lamp unit 20 can be fixed strongly to an interior wall material 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lamp unit mounting structure, for example, a lamp unit mounting structure for mounting a lamp unit such as a room lamp to a lamp mounting window of an interior wall material such as a roof trim.

2. Description of the Related Art Conventionally, a lamp unit mounting structure for mounting a lamp unit to a lamp mounting window of an interior wall material is known (see, for example, Patent Document 1).
As shown in FIG. 7, a lamp unit mounting structure 100 described in Patent Document 1 is a structure in which a room lamp 103 is mounted on a lamp mounting window 102 provided in a roof trim 101 that covers a vehicle body panel (not shown). is there.

  The room lamp 103 includes a lamp function part A having a switch unit 104 and a design part B. The design portion B includes a holder 107 that slidably locks a switch knob 106 that engages with the switch lever 105 of the switch unit 104, and a cover lens 108 that is fitted into the holder 107, and the roof trim 101 from the indoor side. Attached to.

The switch knob 106 is slidably fitted in the holder 107 of the design portion B in advance, and the cover lens 108 is fitted in the holder 107 in this state. The switch knob 106 protrudes indoors from the opening 108a of the cover lens 108.
In addition, a housing insertion slot 109 into which the lamp function part A is inserted is provided at the center of the holder 107.

  In the design portion B, the engagement claw 111 of the holder 107 engages with the engagement hole 101a opened in the roof trim 101 to fix the room lamp 103 and the roof trim 101 to each other, and the fixing means 112 of the holder 107 includes The room lamp 103 and a vehicle body panel (not shown) are fixed to each other through the opening 101b of the roof trim 101, thereby being fixed to the vehicle body.

Therefore, when the room lamp 103 is attached to the roof trim 101, first, the lamp function portion A is mounted on the lamp mounting window 102 of the roof trim 101, and then the locking claw 111 of the holder 107 constituting the design portion B is mounted on the roof. The design portion B is mounted so as to cover the lamp mounting window 102 of the roof trim 101 by engaging with the engagement hole 101 a of the trim 101.
JP 2004-203344 A (FIG. 1)

  By the way, in order to increase the illuminance of the room lamp, there is a case where it is desired to use a bulb having a high wattage. However, when the wattage of the bulb is increased, there is a risk of melting around the bulb due to heat released from the bulb. For this reason, there is a disadvantage that a valve having a wattage larger than the current wattage cannot be used.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a lamp unit mounting structure that can use a bulb having a wattage larger than the current wattage.

In order to achieve the above-described object, the lamp unit mounting structure according to the present invention is characterized by the following (1) to (2).
(1) A lamp unit mounting structure for attaching a lamp unit to a lamp mounting window provided on an interior wall covering a vehicle body panel, wherein the lamp unit includes a bulb and a switch unit for lighting the bulb. A lamp function part provided between the interior wall material and the vehicle body panel; and a cover lens that covers the front of the switch unit and the bulb in the irradiation direction, and is attached to the interior wall material from the indoor side. A design part, covering the lamp function part, providing a light reflection heat radiating member made of metal that reflects the light of the bulb to the indoor side, and fixing the design part to the light reflection heat radiating member Provided partial fixing means.

(2) A lamp unit mounting structure having the configuration of (1) above,
The light reflecting and radiating member is placed on the lamp function portion from the vehicle body panel side along a guide portion provided on the lamp function portion.

In the mounting structure of the lamp unit configured as described in (1) above, a metal light reflecting / dissipating heat-dissipating member that covers the lamp function part is provided, and a design-part fixing means for fixing the design part is provided on the light-reflecting / dissipating member.
In this way, by covering the heat generating lamp function part with a metal light reflecting heat dissipation member excellent in heat dissipation, the heat dissipation area can be increased and the heat of the lamp function part can be efficiently dissipated. A wattage bulb larger than the wattage can be used. In addition, since the design portion fixing means for fixing the design portion is provided on the metal light reflection heat radiating member attached to the lamp function portion to fix the design portion, the lamp unit can be firmly fixed to the interior wall material. it can.

  In the mounting structure of the lamp unit configured as described in (2) above, the light reflecting and radiating member is mounted on the lamp function portion from the body panel side. As a result, even if an external force directed to the indoor side is applied to the light reflecting / radiating member via the design portion, the light reflecting / dissipating member does not fall off from the lamp function portion, so that the design portion can be firmly attached.

  According to the connector of the present invention, it is possible to efficiently dissipate the heat of the lamp unit's active part by enlarging the heat radiation area by covering with the metal light reflecting heat radiation member excellent in heat dissipation, and the current wattage Larger wattage valves can be used. In addition, since the design portion fixing means for fixing the design portion is provided on the metal light reflection heat radiating member attached to the lamp function portion to fix the design portion, the lamp unit can be firmly fixed to the interior wall material. it can.

Hereinafter, a lamp unit mounting structure according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 6, the lamp unit mounting structure 10 according to the present embodiment is provided on a lamp mounting window 12 provided on a roof trim 11 that is an interior wall covering the inside of a vehicle body panel (not shown). For example, the room lamp 20 is attached as a lamp unit.

As shown in FIG. 1, the room lamp 20 includes a lamp function part A having a switch unit 21 and a design part B.
The design portion B includes a holder 21 that slidably locks a switch knob 23 that engages with a switch lever (not shown) of the switch unit 31 and a cover lens 22 that is fitted into the holder 21. Attached to the roof trim 11.

  The switch knob 23 is slidably fitted in the holder 21 of the design portion B in advance, and the cover lens 22 is fitted in the holder 21 in this state. The switch knob 23 protrudes indoors from the opening 22a of the cover lens 22.

  As shown in FIGS. 2A and 2B, a rectangular housing fitting insertion hole 25 into which the lamp function part A is fitted is provided at the center of the holder 21. Vertical walls 28 are erected on the three peripheral edges. On the outer surfaces of the two opposing vertical walls 28, first locking recesses 28 a and 28 a that are locked by a shade 40, which will be described later, are provided at the center, and guide portions into which the shade 40 is inserted at both ends. 29 and 29 are provided. A second locking recess 28b is provided on the inner surface of the vertical wall 28 on the other side.

  The holder 21 engages with an engagement hole 11 a opened in the roof trim 11, and engages with an engagement claw 26 that fixes the room lamp 20 and the roof trim 11 to each other, and passes through the opening 11 b of the roof trim 11. Fixing means 27 for fixing the room lamp 20 and the vehicle body panel (not shown) to each other is provided.

  As shown in FIG. 3, the lamp function part A includes a bulb 32, an insulator housing 33 having a switch housing portion 33b for housing the switch unit 31 together with a bulb housing portion 33a for housing the bulb 32, and a bulb housing portion 33a. It has a shade 40 as a light reflecting and radiating member for covering.

  A contact attachment portion 35a for attaching a pair of valve contacts 34a, 34a for supplying electric power to the attached valve 32 is provided on the inner side surfaces of the pair of side plates 35, 35 opposed to the valve housing portion 33a. Further, grooves 35c for press-fitting (see FIG. 5) the side plates 43 of the shade 40 are provided in the vertical direction on the inner end surfaces of the outer end surfaces 35b and 35b of the side plates 35 and 35, respectively.

The switch unit 31 includes a switch circuit 34, an FFC (Flexible Flat Cable) 37a connected to a power source, an FFC accommodating portion 37 that accommodates the FFC 37a, a switch main body 36, and the like.
The switch circuit 34 includes a pressure contact terminal 34b connected to the FFC 37a, a bus bar group 34c having a predetermined shape constituting the circuit, and a pair of valve contacts 34a and 34a connected to the bus bar group 34c. The switch body 36 is provided with a switch contact 36e. The contact 36d that moves on the switch contact 36e to change the connection state, the spring 36c that presses the contact 36d against the switch contact 36e, the ball 36b, and the contact 36d are slid. A slider 36a and the like are included.

  Therefore, in assembling the lamp function portion A, first, the switch circuit 34 is attached to the insulator housing 33, and the FFC accommodating portion 37 that accommodates and positions the FFC 37a is attached to the insulator housing 33. At this time, the FFC 37a is pushed into and connected to the pressure contact terminal 34b of the switch circuit 34. Next, the switch 36 containing the switch components is attached to the insulator housing 33, and the bus bar group 34c of the switch circuit 34 and the switch contact 36e provided in the switch 36 body are connected.

  Accordingly, by sliding a switch lever (not shown) provided integrally with the slider 36a, the contact 36d is moved on the switch contact 36e to change the connection state, and the valve 32 is turned on / off or the like. .

  As shown in FIG. 3, the shade 40 covers the valve accommodating portion 33a from above the valve 32, and reflects the light of the bulb 32 to the indoor side. As shown in FIG. 4, the shade 40 is formed by bending a metal plate, and has a top plate 41, a pair of opposed end plates 42 and 42, and a side plate 43 that covers one side (the side opposite to the switch unit 31). is doing. The top plate 41 is provided with an opening 41 a for releasing hot air from the valve 32. Both end plates 42, 42 have an inclined surface 42a that is inclined outwardly at one end, and a vertical surface 42b that descends downward from the tip of the inclined surface 42a. Therefore, the vertical surface 42 b is located away from the side end surface 43 a of the side plate 43.

  First locking projections 44 as design portion fixing means projecting inward are provided on the vertical surfaces 42b of the both end plates 42, 42, respectively. The side plate 43 is provided with a second locking projection 45 as a design portion fixing means protruding inward. The first locking projection 44 locks the first locking recess 28a provided on the vertical wall 28 of the holder 21, and the second locking projection 45 engages the second locking recess 28b. Stop. Further, at both left and right end portions of the vertical surface 42b, cut-and-raised portions 46 are provided so that the upper ends protrude outward.

  The inner surface of the shade 40 is preferably a color that reflects the light of the bulb 32 (for example, white or metal color), and the outer surface is preferably colored black or the like with good heat dissipation. Further, it is desirable that the shade 40 is brought into contact with a reinforcing member or the like of the vehicle body panel so that the heat of the shade 40 is released.

  Next, a procedure for mounting the room lamp 20 by the lamp unit mounting structure according to the present invention will be described.

  First, as shown in FIG. 5, the shade 40 is put on the bulb accommodating portion 33a of the lamp function portion A (from the vehicle body panel side). At this time, the side end surface 43a of the side plate 43 of the shade 40 is press-fitted along the groove 35c provided in the side plate 35 of the valve accommodating portion 33a. Thereby, the shade 40 is attached at a predetermined position in the lamp function unit A and is prevented from falling off. At this time, the end plate 42 of the shade 40 is separated from the side plate 35 at a predetermined interval.

  Next, as shown in FIG. 1, the lamp function portion A covered with the shade 40 is mounted on the lamp mounting window 12 of the roof trim 11. And the latching claw 26 of the holder 21 which comprises the design part B is engaged with the engagement hole 11a of the roof trim 11, and the room lamp 20 and the roof trim 11 are mutually fixed, and the fixing means 27 of the holder 21 is fixed. Through the opening 11b of the roof trim 11, the room lamp 20 and the vehicle body panel (not shown) are fixed to each other, and the design portion B is mounted so as to cover the lamp mounting window 12 of the roof trim 11.

  At this time, the design portion B so that the end portion of the vertical surface 42 b of the end plate 42 of the shade 40 is inserted along the guide portion 29 provided on the vertical wall 28 of the housing fitting insertion opening 25 of the holder 21. Is pushed into the roof trim 11 (see FIG. 5). Since the cut-and-raised 46 is provided at the end of the vertical surface 42 b so as to protrude outward, the vertical surface 42 b of the shade 40 is pressed to the inside (the vertical wall 28 side) inside the guide portion 29.

  When the design portion B is further pushed in, the first locking concave portion 28a provided on the outer surface of the vertical wall 28 is locked by the first locking convex portion 44 provided on the vertical surface 42b of the shade 40. The At the same time, the second locking recess 28 b provided on the inner surface of the vertical wall 28 is locked by the second locking projection 45 provided on the side plate 43 of the shade 40. Accordingly, the lamp function portion A and the design portion B are locked to each other with the roof trim 11 interposed therebetween, and the room lamp 20 can be attached.

  As described above, according to the lamp unit mounting structure 10 according to the present invention described above, the lamp function part A that generates heat is covered with the metal shade 40 having excellent heat dissipation, so that the heat dissipation area is increased and the lamp function part A is increased. It is possible to efficiently dissipate the heat. Thereby, the valve | bulb 32 of the wattage larger than the present wattage can be used.

  In addition, since the first locking projection 44 and the second locking projection 45 that fix the design portion B are provided on the metal shade 40 attached to the lamp function portion A to fix the design portion B, The room lamp 20 can be firmly fixed to the roof trim 11.

  Further, since the shade 40 is attached to the lamp function part A from the vehicle body panel side, the shade 40 does not fall off from the lamp function part A even when an external force directed to the indoor side is applied to the shade 40 via the design part B. The part B can be firmly attached.

  Note that the lamp unit mounting structure of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.

It is a disassembled perspective view which shows the attachment structure of the lamp unit concerning embodiment of this invention. (A), (B) is a perspective view which shows the principal part of a design part. It is a disassembled perspective view of a shade and a lamp functional part. It is a perspective view of a shade. It is a perspective view which shows the state which covered the lamp | ramp function part with the shade. It is a principal part perspective view which shows the state which assembled | attached the lamp function part and the design part. It is a disassembled perspective view which shows the attachment structure of the conventional lamp unit.

Explanation of symbols

A Lamp functional part B Design part 10 Lamp unit mounting structure 11 Roof trim (wall material for interior)
12 Lamp installation window 20 Room lamp (lamp unit)
22 Cover lens 29 Guide part 31 Switch unit 32 Valve 40 Shade (light reflection heat radiating member)
44 1st latching convex part (design part fixing means)
45 Second locking projection (design part fixing means)

Claims (2)

A lamp unit mounting structure for mounting a lamp unit on a lamp mounting window provided on an interior wall covering a vehicle body panel,
The lamp unit includes a bulb and a switch unit that lights the bulb, and a lamp functional portion provided between the interior wall material and the vehicle body panel;
A design portion that has a cover lens covering the irradiation direction front of the switch unit and the bulb and is attached to the interior wall material from the indoor side;
Covering the lamp function part, providing a light reflection heat radiating member made of metal that reflects the light of the bulb to the indoor side,
An attachment structure for a lamp unit, characterized in that a design portion fixing means for fixing the design portion is provided on the light reflecting and radiating member.   2. The lamp unit mounting structure according to claim 1, wherein the light reflecting and radiating member is placed on the lamp function portion from the vehicle body panel side along a guide portion provided in the lamp function portion.

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