JPH0222342Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heat dissipation structure for a pillar spotlight.

(Prior Art) Conventionally, in automobiles, spots are provided to illuminate the driver, a person sitting in the front passenger seat, and a person sitting in the rear seat, taking into account the need to view maps, etc. inside the vehicle. Lights provided. For such a spotlight, a pillar spot is proposed, which is mounted, for example, on a pillar part of a vehicle and is supported by a flexible connecting member. In the pillar spotlight, the spotlight is attached to the tip of the flexible connection member, and the electric supply line, lighting bulb mounting part, and bulb installation space are formed in the light part case, and each lighting device is housed. ing.

(Problems to be Solved by the Invention) Such pillar spotlights are small and have a light-emitting member that generates heat inside, so if left on for a long time, the temperature of the light itself tends to rise. Further, the spot light section supported by the flexible connecting member is held by a driver or the like and used to appropriately set the illumination location. Therefore, when the temperature of the light case increases due to long-time lighting, it becomes difficult to hold the light case and set the illumination location, which causes inconvenience in use. Furthermore, if the heat generated by the bulb is accumulated inside the light case, various parts within the case may be deformed due to the heat or have other adverse effects.

(Means for Solving the Problems) The present invention includes a cylindrical bulb cover that surrounds the bulb attached to one side of the central partition wall, a gap surrounding the lens case, and a gap between the bulb cover and the lens case. A ventilation hole is provided in the lens case to communicate the gap with the outside, and a lens is provided at the tip of the lens case separated from the bulb cover so that the air inside the bulb cover can flow into the gap. A base case is provided on the other side, a space is formed in the base case through which electrical wiring for the valve passes, a ventilation hole is provided in the base case to communicate the space with the outside, and a vent hole is provided in the central partition wall. A heat dissipation structure of the pillar spotlight is formed by providing a ventilation hole that communicates the space inside the base case with the inside of the bulb cover of the lens case.

(Function) The air heated by the valve can be discharged to the outside through the vent hole, which prevents the temperature of the entire spot light from rising, making it possible to touch it with your hands. At the same time, thermal deformation and the like can be prevented. Further, even if a vent hole is formed, since the bulb is covered with the cover except for the irradiation surface, it is possible to prevent unnecessary light from leaking through the vent hole of the case.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the area around the driver's seat inside the cabin of an automobile. 1 is the front window, 2 is the door window, and 3 is the rearview mirror. The pillar spotlight according to the present invention is attached to a front pillar 4 forming a side piece of a front window 1, for example.

Figure 2 shows how the pillar spotlight is installed. The pillar spotlight 5 is composed of a base 6 fixed to the surface of the front pillar 4 on the vehicle interior side, and a spotlight part 7 having one end fixed to the base 6 and detachable from the base 6. The spot light section 7 consists of a tube-shaped flexible connection member 8 whose one end is fixed to the base 6, and a light section 9 provided at the tip of the flexible connection member 8, with the light section 9 placed in a downward position. will be placed in The lower surface of the light section 9 in the figure serves as an irradiation surface for irradiating light. Light part 9 against base 6
can change its position, thereby changing the irradiation location.

FIG. 3 is an enlarged external view of the pillar spotlight 5. As shown in FIG. 6 is the base, base 6
is a mounting portion 6a for fixing the flexible connection member 8;
and a support section 6b that supports the light section 9 and allows it to be freely attached and detached. In addition, the flexible connecting member 8 of the spot light section 7 uses, for example, a spiral tube as an outer cylinder, so that its direction can be changed freely and a constant posture can be maintained as necessary. . Furthermore, an electric wire for supplying electricity to the bulb is inserted through the inside of the flexible connecting member 8. On the other hand, the light section 9 houses a switch section, a bulb holder, a bulb, etc. inside.

FIG. 4 is a side view showing only the light section 9 in an enlarged manner. A rotary switch knob 10 is provided in the center of the light section 9, and the mark 10a is turned on and off.
You can select whether to turn the bulb on or off by setting it to OFF. The light section 9 consists of a base case 11A and a lens case 11B, which are disposed on both sides with the switch knob 10 in the middle, and the base case 1 is connected to the flexible connection section 8.
A plurality of slit-shaped ventilation holes 12 are formed in the lens case 1A to communicate the inside and outside, and a slit-shaped ventilation hole 1 is formed in the lens case 11B, which has a cap 14 attached to the tip thereof.
A plurality of numbers 3 are formed.

Next, the internal structure will be explained based on FIG.

First, the base 6 consists of a base frame 15 and a rubber base cover 16 that covers the outer peripheral surface of the base frame 15. The lower part of the base frame 15 is open, and a bottom plate 17 is fixedly installed in this lower part. Electric wiring 18, 1 is provided on the lower surface of the mounting portion 6a of the base 6.
A tube 20 housing the tube 9 is fitted and attached to a lower plate 22 fixed with screws 21, and one end of the flexible connecting member 8 is fixed to the upper part. The flexible connection member 8 is composed of an inner flexible tube 24 through which the electric wiring 18 covered with a tube 23 is inserted, and an outer conductive spiral tube 25 covering the flexible tube 24. A terminal member 26 coupled to the spiral tube 25 is inserted into the hole 6a-1 at the top of the mounting portion 6a and fixed with a screw 27. At this time, electrical wiring 1
9 has its terminal 19a fastened together with a screw 27,
It is electrically connected to the spiral tube 25. In addition, 18
A and 19a are external connection terminals of the electric wirings 18 and 19, and are connected to the power supply section.

Further, a magnet 28 is provided inside the support portion 6b of the base 6, as shown in FIG.
It is fixedly installed by being held by a magnet holding part 29 fixed to 5. Wall plates 29a on both sides of the magnet 28 of the magnet holder 29,
The upper edge of the support portion 29a is provided so as to protrude toward the outer surface of the support portion 6b of the base 6.

Note that the base 6 has nuts 3 for attaching screws that fix the base 6 to the front pillar 4.
0 and 30 are provided at two locations.

Next, the spot light section 7 consists of the flexible connecting member 8 and the light section 9. The flexible connecting member 8 is connected to the inner flexible tube 24
and an outer spiral tube 25. The other end of the flexible connection member 8 is connected to the base end of the base case 11A of the light section 9 via the terminal member 31. The terminal members 31 are coupled with screws 32.

Inside the light section 9, a bulb holder 33 is fixed to the central partition wall 11a, and a lighting bulb 34 is screwed onto the bulb holder 33. A contact plate 35 is disposed at the bottom of the valve holder 33 and is supported by a coil spring 36 and comes into contact with the lower part of the valve 34, and the electrical wiring 18 is connected to the contact plate 35. On the other hand, the switch knob 10 that can rotate with respect to the base case 11A and the lens case 11B is arranged around the bulb holder 33, and a contactor 38 elastically supported by a coil spring 37 is supported and stored by a ball 39. Switch case 40
will be placed. Reference numeral 41 denotes an electrical terminal, and the electrical terminal 41 and the terminal member 26 are connected via the screw 32 and the electrical wiring 42, and the electrical terminal 41 is then connected to the electrical wiring 19. With this configuration, when the switch knob 10 is set to ON, the contact 38 and the electric terminal 41 are brought into a connected state, and the bulb 34 is energized and turned on. Conversely, when the switch knob 10 is set to OFF, the contact 38 and the electrical terminal 41 are disconnected and the bulb 34 is turned off.

A cylindrical valve cover 43 with an open end is disposed around the bulb 34, so that the bulb 34 is surrounded by the bulb cover 43, and there is a certain distance between the bulb cover 43 and the lens case 11B. A space S ₁ is formed. The space S ₁ is in communication with the space S ₂ inside the valve cover 43 through the opening at the tip of the valve cover 43 . Further, the space _S2 is connected to the electrical wiring 18, 42 through the ventilation hole 11a-1 formed in the partition wall 11a as shown in FIGS. 9 and 10.
It is in communication with the space _S3 where the

The base case 11A and the lens case 11B of the light section 9 have a substantially cylindrical overall external shape, and vent holes 12 and 13 are formed in the part that forms the space _S3 and the part that forms the storage part for the bulb 34. .
As shown in Fig. 5, Fig. 9, and Fig. 10, the ventilation hole 1
2 are formed in three axial directions and two in the circumferential direction, and three ventilation holes 13 are formed in the axial direction and four in the circumferential direction.

The tip of the lens case 11B is open, and a lens 44 is disposed therein, and the cap 14 is attached around the tip.

Note that 45 is a fixture for fixing the electric wirings 18, 42.

Further, a metal plate 47 is attached to the lower part of the outer peripheral surface of the base of the base case 11A of the light section 9 by means of screws 46, 46.
is permanently installed.

As mentioned above, this pillar spotlight has a lens case 11 on the bulb 34 side of the light section 9.
In addition to providing a ventilation hole 13 in B, a ventilation hole 12 is also provided in the base case 11A on the side opposite to the bulb, and a ventilation hole 11a-1 is provided in the central partition wall 11a that partitions the base case 11A and the lens case 11B. It is characterized by

Therefore, in the pillar spotlight 5 shown in FIGS. 1 and 2, when the light portion 9 is directed downward, the air heated by the bulb 34 flows through the ventilation hole 11a, as is clear from FIG. -1 through the vent hole 12 of the base case, and cold air flows in through the vent hole 13 of the lens case;
It is clear that it extends around the outer surface and tip of the valve cover 43 to reach the inside of the valve cover 43. Furthermore, even if the light section 9 is oriented sideways or upwards depending on preference, at least one of the ventilation holes 12 and 13 can serve as an inflow hole for cold air.

Therefore, when the bulb 34 is turned on for a long time and the temperature inside the bulb cover 43 rises, convection occurs.
Hot air is removed from vent hole 1 by air flow as shown by arrow A.
2 and 13 to the outside, thereby preventing the temperature of the light section 9 itself from rising. Since the pillar spot light 5 is used to determine the irradiation area by grasping the light part 9, the present invention can prevent the temperature of the light part 9 from rising, making it extremely easy to handle. Become.

Further, even if the vent hole 13 is formed in the case 11, since the bulb 34 itself is surrounded by the bulb cover 43, there is an advantage that light will not leak outside through the vent hole 13.

(Effects of the invention) As is clear from the above explanation, the present invention provides ventilation holes in the base case, lens case, and central partition, which constitute the lens part. By forming ventilation holes for heat dissipation in the case, it is possible to suppress the temperature rise of the light case even if the light is used for a long time, making it extremely convenient to use.
Further, thermal deformation of the case and adverse effects of heat on other parts can be prevented.

Furthermore, since a bulb cover surrounding the bulb is provided inside the lens case, light can be prevented from leaking to the outside through the ventilation hole of the lens case.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the interior of the car, Figure 2 is an enlarged view of the front pillar, Figure 3 is a side view of the pillar spotlight, Figure 4 is an enlarged view of the light section, and Figure 5 is the internal structure of the pillar spotlight. 6 is a bottom view of the base, FIG. 7 is a vertical sectional view of the detachable part in FIG. 5, FIG. 8 is a front view of the base, and FIG. 9 is a bottom view of the base. 10 is a sectional view taken along the - line in FIG. 5. In the drawing, 4 is a front pillar, 5 is a pillar spot light, 6 is a base, 7 is a spot light part, 8 is a flexible connection part, 9 is a light part, 1
1A is the base case, 11B is the lens case, 11
a is the central partition wall, 11a-1 is the same ventilation hole, 12,
13 is a vent, 28 is a magnet, 34 is a valve, 42 is electrical wiring, 43 is a valve cover, 44
is the lens, 47 is the metal plate, A is the air flow, S
1, S2, and S3 are spaces.

Claims (1)

[Claims for Utility Model Registration] A cylindrical valve cover 43 surrounding the bulb 34 is attached to one side of the central partition wall 11a, and the lens case 11B is surrounded by the valve cover with a gap. A ventilation hole 13 is provided to communicate the gap with the outside, and
A lens 44 is provided at the tip of the lens case 11B and is spaced apart from the valve cover 43 so that the air inside the valve cover 43 can flow into the gap, and a base case 11 is provided on the other side of the central partition wall 11a.
A is provided in the base case to form a space S3 through which the electrical wiring 42 for the valve 34 passes, and a ventilation hole 12 is provided in the base case 11A to communicate the space S3 with the outside, and the central partition wall Base case 11A to 11a
A heat dissipation structure for a pillar spotlight characterized by providing a ventilation hole 11a-1 that communicates the interior space S3 with the interior of the bulb cover 43 of the lens case 11B.