JP3115033U - Lighting device - Google Patents

Abstract

To provide an illumination device that can illuminate an object from a side surface of a case and the case is difficult to be heated.
A cylindrical case 12 having an illumination window hole 13 formed in a body, a lamp unit housed in the case 12 and having a light emitting bulb disposed facing the illumination window hole 13, and a light emission The window glass 48 arranged between the bulb and the illumination window hole 13 and the light and heat of the light emission bulb arranged in a position facing the illumination window hole 13 sandwiching the light emission bulb in the direction of the illumination window hole The lighting device 11 includes a reflecting plate that reflects light to the window, and the window glass 48 and the reflecting plate surround the light emitting bulb, and the window glass 48 and the reflecting plate are not directly in contact with the case 12. The first lid portion 20 and the third lid portion 30 are supported. Moreover, the part exposed to the exterior of the illuminating device 11 is subjected to flocking treatment.
[Selection] Figure 1

Description

  The present invention relates to a lighting device that is suitable for being mounted on a vehicle as a light source for photographing, for example, in a vehicle collision test.

As one of the methods for obtaining data in a vehicle crash test, a small camera has been conventionally mounted on the vehicle, and a still picture is taken to record the situation of the impact caused to the vehicle by the collision. Although there are many techniques related to such a collision test, Patent Document 1 is given as an example.
When taking still pictures, since the shutter speed of the camera becomes high, an illumination device using a high-intensity lamp as the light source is often used as the light source. Further, when sufficient illuminance cannot be obtained even when recording as an image other than a still picture, a high-luminance illumination device may be used for photographing.
In recent years, with the development of CCD cameras, the cameras have become very small, and it has become possible to take pictures of details inside the vehicle, such as the interior of a door, the inside of a meter, the back of a hood, etc., which could not be taken before. And along with miniaturization of cameras, miniaturization of illumination devices that serve as light sources has also been demanded. However, even if the camera can be downsized, there are several problems that arise when downsizing the lighting device.
JP 2001-147173 A

One of the problems is heating the lighting device. When setting the lighting device to capture details in the car, the lighting direction must be set very carefully so that the shadows do not interfere with the shooting. Furthermore, in order to set the optimum shooting conditions (exposure setting, etc.) of the camera, it is necessary to make the lighting device emit light at the adjustment stage. For this reason, fine-tuning is performed many times after the lighting device is temporarily fixed in detail photographing.
However, since high-intensity lamps generate heat during light emission, the lighting device has been extremely hot during the work, and inadvertently touching the lighting device during many fine adjustments can cause burns. There was a possibility of doing.
Another problem is the position of the light emitting bulb of the conventional lighting device.
In the conventional illuminating device 91, as shown in FIG. Providing the light emitting bulb 93 at the tip of the case 92 of the illuminating device 91 can surround the entire rear region of the light emitting bulb 93 by the reflector 94, so that heat is not trapped in the case 92, and the case 92 is relatively suppressed at a high temperature. When this is set in a narrow space in the vehicle, the length of the case 92 is in the way, making it very difficult to set.
The present invention has been made by paying attention to such problems existing in the prior art. The object is to provide an illuminating device that can illuminate an object from the side of the case and that the case is less likely to get hot.

As a first means for achieving the above object, a cylindrical case in which an illumination window hole is formed in a body portion, and a light emitting bulb that is accommodated in the case and faces the illumination window hole. A lamp unit disposed; a window glass disposed between the light emitting bulb and the illumination window hole; and a light of the light emission bulb disposed at a position facing the illumination window hole sandwiching the light emission bulb. And a reflecting member that reflects heat in the direction of the lighting window hole, the light emitting bulb is surrounded by the window glass and the reflecting member, and the window glass and the reflecting member are The case is not directly touched.
With such a configuration, the lamp unit housed in the cylindrical case has its light-emitting bulb arranged facing the illumination window hole in the case body, which is different from the conventional illumination device. Since it can illuminate from the side surface direction of the case instead of illuminating from the end portion, it can be set in a narrow place.
The window glass placed in front of the light emitting bulb as a heat source is held so as not to be in direct contact with the case, and the reflecting member is also held so as not to be in direct contact with the case. The heat of the window glass and the reflective member heated in the step is hardly transmitted to the case. Further, since the light emitting bulb is surrounded by the reflecting member, basically light and heat are concentrated in the direction of the illumination window hole. In addition, since a gap is formed between the window glass and the reflecting member and the case, heat in the case is radiated from the illumination window hole through the gap.

In the second means, in addition to the first means, a heat radiating hole is formed in the case on the back side of the reflecting member.
With such a configuration, as described above, the heat in the case is radiated from the illumination window hole through the gap, and is also radiated from the heat radiating hole. This is because providing a heat radiating hole at this position is most efficient in terms of heat radiation. But it is free to provide a heat radiating hole in the other surface of a case except for the reflective surface side (front surface side) of a reflective member.

In the third means, in addition to the first or second means, the light emitting bulb is fixed so as to protrude along the axial direction of the case with the partition member of the case as a base, and the reflection member is moved toward the front side. A groove-shaped inner surface shape having oppositely expanded reflecting surfaces is formed, and the inner surface side of the reflecting member surrounds the three sides except for the illumination window hole side.
Although it is possible to illuminate from the side of the case by illuminating the body with the illumination window hole, it is preferable from the viewpoint of increasing the amount of light to concentrate light directed in the direction other than the illumination window hole direction. . Therefore, when the light emitting bulb is fixed so as to protrude along the axial direction of the case with the partition member of the case as a base, the groove-shaped inner surface having an opposing reflection surface that is expanded toward the front side. It has a shape and surrounds the three sides except for the illumination window hole side of the same light emitting bulb.
First, it is preferable from the viewpoint of the space in the case that the light emitting bulb is attached in such a direction. And by making the shape of the reflecting member into a groove-like inner surface shape having an opposing reflecting surface that is expanded toward the front side, light other than light directed to the lighting window hole is reflected in the direction of the lighting window hole, and the light quantity It is possible to improve. In addition, since the reflective member surrounds the light emitting bulb from the three sides behind the light emitting bulb where the operator may come into contact with the work, heat is hardly transmitted to the rear of the light emitting bulb.
Here, the groove-shaped inner surface shape is not particularly limited as long as the inner surface is concave and the reflected light can be guided forward. For example, a saddle shape can be adopted in addition to the embodiment.
In addition, the reason for surrounding the three sides except the side of the illumination window is to reflect almost all light except the light directly directed to the illumination window, and it is possible to define exactly how far it can be said to be a three-way enclosure. is not.

In the fourth means, in addition to any one of the first to third means, a plurality of partition members of the case are arranged at predetermined intervals, and the window glass is installed between two partition members at both ends thereof. Like that.
The plurality of partition members seal the case and support various components disposed inside the case. The glass for the window can be maintained between the two partition members so that the gap between the case can be maintained and is supported only at both ends, so that the heat of the window glass is not easily transmitted between the partition members, Therefore, heat transfer to the case via the partition member is also reduced.

In the fifth means, in addition to the third means, the window glass is installed between the two partition members at both ends thereof, the reflection member is fixed to the partition member, and the leading edge of the reflection member is The window glass is supported in contact with the side edge portion of the window glass.
As a result, the window glass is firmly held by both end portions and side edge portions on the front surface of the light emitting bulb. Moreover, since the light emitting bulb is completely surrounded by the window glass and the reflecting member, heat is less likely to escape to the rear surface side of the reflecting member.
In the sixth means, in addition to the first to fifth means, the outer periphery of the case is flocked. As a result, the case surface area can be increased to dissipate and dissipate heat, making it difficult to feel the heat even if the operator should come in contact with the work.

  In the device of the above claims, the lamp unit is housed in a cylindrical case, and its light emitting bulb is arranged facing the illumination window hole in the case body, which is different from the conventional illumination device. Since it can illuminate from the side of the case instead of illuminating from the end of the case, it can be easily set in a narrow place. Further, since the window glass and the reflective member arranged around the light emitting bulb are also held so as not to be in direct contact with the case, the heat of the window glass and the reflective member heated near the light emitting bulb is transmitted to the case. Further, since the window glass and the reflecting member form a gap with the case, the heat in the case is radiated from the illumination window hole through the gap, so that the heat is not easily trapped in the case. Therefore, the case is unlikely to become hot, and the illumination device is optimal for installation in a narrow place.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a lighting device according to the present invention will be described below with reference to the drawings. In the following description, for the sake of convenience of explanation, the right side in FIG. Further, in the state in which the illumination window hole 13 is arranged upward as shown in FIG. 1, the direction having the illumination window hole 13 (upward in FIG. 3) is defined as the front, and the reverse direction is defined as the rear.
As shown in FIGS. 1-3, the illuminating device 11 is provided with the cylindrical case 12 which the both ends opened. A rectangular illumination window hole 13 is formed on the upper body side of the aluminum alloy case 12. As shown in FIGS. 1 and 3, the illumination window hole 13 occupies about 1/6 of the entire circumference of the case 12 in its opening width (that is, an arc length of about 60 degrees), and in the opening length in the longitudinal direction, The length of the case 12 is a little less than half.
In the state in which the illumination window hole 13 in FIG. 1 is arranged at the top, the heat dissipation holes 15 are each 10 at a predetermined interval from the center position (center position) in the vertical direction of the case 12 toward the bottom. Is transparent. As shown in FIG. 10, among the heat radiation holes 15 on each side, six are arranged along the longitudinal direction of the trunk at the center in the vertical direction of the trunk, and the remaining four are the six heat radiation holes 15. Are disposed along the longitudinal direction of the body portion at positions shifted in the front-rear direction. As shown in FIGS. 1, 3, and 9, the rearmost heat radiation hole 15 is formed in a long hole shape, and the other heat radiation holes 15 are formed in a circular shape.
As shown in FIG. 2, a cable through hole 17 is provided on the side surface of the lower half of the case 12. Four small through holes 18 for screws are provided at equal intervals near the front and rear ends and the center of the case 12.

First and second lid portions 20 and 21 as partition members are disposed at both ends of the case 12. The cover parts 20 and 21 are comprised from the disk-shaped aluminum alloy board. Both the lid portions 20 and 21 are each a flat cylindrical fitting portion 24 fitted into the case 12 and a flange portion 25 having the same diameter as the outer diameter of the case 12 covering the end portion of the case 12 from the outside. It consists of and. Four screw holes 23 corresponding to the small through holes 18 are formed in the outer periphery of each fitting portion 24. An attachment hole 26 for attaching a stay is formed on the outer surface of each flange portion 25. Both the lid parts 20 and 21 fit the fitting part 24 to the respective end openings of the case 12, and the countersunk screw 27 is inserted into the screw hole 23 through the small through hole 18 with the flange part 25 applied to the end part. Are fixed to the case 12 by screwing.
As shown in FIGS. 2, 3, and 5, a first fitting groove that circulates in a circular shape having a slightly smaller diameter than the outer diameter of the fitting portion 24 is formed on the inner surface of the fitting portion 24 of the first lid portion 20. 28 is formed. As shown in FIG. 2, a pair of screw holes 29 for attaching the reflector are formed at positions on the inner peripheral side of the first fitting groove 28 and facing each other by 180 degrees.

A third lid 30 as a partition member is disposed in the center of the case 12. The 3rd cover part 30 is comprised from the plate body made from donut-shaped aluminum alloy. As shown in FIGS. 2 to 4, 7, and 8, the third lid 30 is a hollow outer shape in which a large through hole 32 having a circular cross section is formed in the center of a flat cylindrical main body 31. I am doing. Four screw holes 23 corresponding to the small through holes 18 are formed in the outer periphery of the third lid 30. A second fitting groove 33 that circulates in a circle having the same diameter as the first fitting groove 28 is formed on the surface (upper surface side) of the third lid 30 facing the first lid 20 side. ing. On the surface (lower surface side) of the third lid portion 30 facing the second lid portion 21 side, a concave portion 35 is formed in a ring shape around the periphery of the large through hole 32. As shown in FIGS. 7 and 8, two unit fixing screw holes 36 are formed on the boundary of the recess 35 at positions facing each other by 180 degrees along the axial direction.
The third lid 30 is fixed to the case 12 by screwing a countersunk screw 27 into the screw hole 23 through the small through hole 18 at the center position in the vertical direction in the case 12. In a state where the third lid portion 30 is disposed in the case 12, the second fitting groove 33 is disposed so as to face the first fitting groove 28 on the first lid portion 20 side.

  A lamp unit 40 is disposed in the case 12. The lamp unit 40 includes a socket 41, a cable 42 and a light emitting bulb 43. The light emitting bulb 43 of the present embodiment is a so-called HID lamp (High Intensity Discharge Lamp). As shown in FIGS. 2 and 3, the socket 41 includes a mounting flange 45, and the mounting flange 45 is fitted in the recess 35 of the third lid 30. As shown in FIG. 7, in the socket 41, the mounting screw 45 is screwed into the unit fixing screw hole 36 via the pressing plate 47 in a state where the small flange 18 is fitted in the concave portion 35. Is fixed to the third lid 30. The light emitting bulb 43 extends upward from the mounting flange 45 of the socket 41 and is disposed at a position facing the illumination window hole 13 through the large through hole 32 of the third lid portion 30. The cable 42 is guided by a synthetic rubber sheath 44 and extends from the small through hole 17 for the cable to the outside of the case 12.

Between the first lid portion 20 and the third lid portion 30, a window glass 48 and a reflection plate 49 as a reflection member are disposed.
The window glass 48 is provided in front of the light emitting bulb 43 and is provided between the first lid portion 20 and the third lid portion 30. As shown in FIGS. 4 and 5, the window glass 48 is a curved plate having a rectangular shape in plan view. The window glass 48 is configured to have substantially the same thickness (slightly thinner than the groove width) as the groove widths of the first and second fitting grooves 28 and 33, and the same curvature as the curvature of both the fitting grooves 28 and 33. It is formed in a curve. The front end of the window glass 48 is inserted into the first fitting groove 28, and the rear end is inserted into the second fitting groove 33.

The reflection plate 49 is installed between the first lid portion 20 and the third lid portion 30 so as to surround the left and right and lower regions of the light emitting bulb 43. As shown in FIGS. 4 to 6, the reflection plate 49 is formed by bending and forming a stainless steel plate body having a mirror-finished inner surface facing the light emitting bulb 43. The reflecting plate 49 includes a rear reflecting plate 50 disposed horizontally on the rear surface of the light emitting bulb 43 and a pair of left and right reflecting plates 51 and 52 extending forward from the rear reflecting plate 50 as a base. As shown in FIGS. 3 to 6, the insertion ends 50 a at both ends of the rear reflector 50 are inserted into the first and second fitting grooves 28 and 33. As shown in FIGS. 4 and 5, the insertion end 50a is held in contact with the inner walls of the fitting grooves 28 and 33 at a position near the center of the upper surface and the lower surface corner. The upper edges of the left and right reflecting plates 51 and 52 are formed as a glass support portion 53 that is bent so as to slightly fall outward. The glass support portion 53 is in linear contact with the side edge portion of the window glass 48 from the back surface side, and supports the window glass 48 from the left-right direction. Thus, the light emitting bulb 43 is surrounded by the window glass 48 and the reflection plate 49. In addition, a gap S is formed between the case 12 and the window glass 48 and the reflection plate 49.
A mounting piece 55 is formed to project from the upper edges (on the first lid 20 side) of the left and right reflecting plates 51 and 52. A screw hole 56 is formed in the attachment piece 55. As shown in FIG. 4, reflection is performed by screwing the mounting screw 57 into the screw hole 29 for attaching the reflecting plate via the mounting piece 55 in a state where the screw hole 56 is matched with the screw hole 29 for attaching the reflecting plate. The plate 49 is fixed to the first lid portion 20.

The illuminating device 11 configured as described above is subjected to a flocking process on the outer peripheral surface of the case 12 and the externally exposed surfaces of the first and second lid portions 20 and 21. The flocking is performed by a known electrostatic flocking process (application of adhesive to the outer peripheral surface → electrostatic flocking → removal of excess pile → drying).
As shown in FIGS. 1 and 9, the stay 61 is attached to the mounting hole 26 for attaching the stay in the desired direction in the lighting device 11 configured as described above with screws 62. For example, as shown in FIG. 10, the illumination device 11 is mounted on the vehicle together with the control device 65 that also serves as a power supply unit, and is attached to a place where photographing with the CCD camera 66 is desired via a stay 61.

With the configuration described above, the lighting device 11 of the present embodiment has the following effects.
(1) The lamp unit 40 accommodated in the case 12 is arranged so that the light-emitting bulb 43 faces the illumination window hole 13 formed in the case body, and illuminates from the side of the case 12. Therefore, it can be set in a narrow place.
(2) The window glass 48 disposed in front of the light emitting bulb 43 is held by the first and third lid portions 20 and 30 so as not to be in direct contact with the case 12, and the reflector 49 is also in direct contact with the case 12. It is hold | maintained at the 1st and 3rd cover parts 20 and 30 so that it may not happen. Therefore, the heat of the window glass 48 and the reflecting plate 49 heated in the vicinity of the light emitting bulb 43 is not easily transmitted to the case 12, and the case 12 is not easily heated.
(3) The light emitting bulb 43 is entirely surrounded by the window glass 48 and the reflection plate 49 and forms a gap S with the case 12. Therefore, since the heat in the case 12 is radiated from the illumination window hole 13 through the gap S, the cooling effect is great.
(4) Since the heat radiating hole 15 as the heat radiating hole is formed on the back side of the reflector 49, the hot air in the gap S is radiated from the heat radiating hole 15 in addition to the illumination window hole 13. The cooling effect is great. In this case, since the heat radiation hole 15 is not formed on the front surface side of the reflection plate 49, the light concentrated on the illumination window hole 13 is not dispersed.
(5) Since the heat radiating hole 15 is also formed on the lower body side of the case 12 in which the socket 41 and the cable 42 of the lamp unit 40 are accommodated, hot air trapped between the second and third lid portions 21 and 30 is also generated. Since the heat is dissipated, the cooling effect is great.
(6) Since the side edge of the window glass 48 is supported by the reflection plate 49, the window glass 48 is firmly held even though it does not contact the case 12.
(7) The part exposed to the outer periphery of the illuminating device 11 is subjected to flocking treatment. As a result, the surface area of the outer surface can be increased to dissipate and dissipate heat, making it difficult to feel the heat even if the operator contacts it during work.

Note that the present invention can be modified and embodied as follows.
In the above embodiment, an HID lamp is used as the light emitting bulb 43, but other bulbs can be used freely. For example, a high-intensity bulb such as a halogen bulb can be used.
A plurality of light emitting bulbs 43 may be arranged in series.
The illumination device 11 can also be used when shooting as a video, in addition to shooting still photos with the CCD camera 66.
The position, shape, and size of the heat dissipation hole 15 can be freely changed unless they are the front surface of the reflection plate 49.
The case 12 has a cylindrical shape in the above embodiment, but may be configured in other shapes.
The shape of the reflection plate 49 is not limited to the above embodiment. Moreover, in the said embodiment, although it adhered to the 1st cover part 20, you may adhere on the 3rd cover part 30 side.
The size and shape of the illumination window hole 13 are not limited as long as the side direction of the case can be illuminated. The shape of the window glass 48 can also be changed according to the illumination window hole 13.
-In addition, it is free to implement in a mode that does not depart from the spirit of the present invention.

The perspective view of the illuminating device with which the stay of embodiment of this invention was attached. The plane sectional view of the same lighting device. The longitudinal cross-sectional view of the same illuminating device. Sectional drawing in the AA direction in FIG. Sectional drawing in the BB direction in FIG. Explanatory drawing explaining the structure in a case. Explanatory drawing explaining the attachment method to the 3rd cover part of a lamp unit. The side view of a 3rd cover part. Explanatory drawing explaining the attachment state of the same illuminating device. The conceptual diagram of the state which mounted the same illuminating device in the vehicle. The perspective view of the conventional illuminating device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Illuminating device, 12 ... Case, 13 ... Illuminating window hole, 15 ... Radiation hole, 40 ... Lamp unit, 43 ... Light emission bulb, 48 ... Window glass as window glass, 49 ... Reflecting plate as reflecting member.

Claims (6)

A cylindrical case in which an illumination window hole is formed in the body,
A lamp unit housed in the case and having a light-emitting bulb disposed facing the illumination window hole;
A window glass disposed between the light emitting bulb and the illumination window hole;
A lighting device provided with a reflecting member disposed at a position facing the lighting window hole sandwiching the light emitting bulb and reflecting light and heat of the light emitting bulb in the direction of the lighting window hole;
The window glass and the reflecting member surround the light emitting bulb, and the window glass and the reflecting member are not in direct contact with the case. The lighting device according to claim 1, wherein a heat radiating hole is formed in the case on a back side of the reflecting member. The light-emitting bulb is fixed so as to protrude along the axial direction of the case with the partition member of the case as a base, and the reflective member has a groove-like inner surface shape having opposing reflective surfaces that are widened toward the front side. The lighting device according to claim 1, wherein three sides of the same light emitting bulb except for the side of the illumination window hole are surrounded by the inner surface side of the reflecting member. 4. The illumination according to claim 1, wherein a plurality of partition members of the case are arranged at predetermined intervals, and the window glass is installed between two partition members at both ends thereof. apparatus. The window glass is installed between two partition members at both ends thereof, and the reflection member is fixed to the partition member, and the leading edge of the reflection member is in contact with the side edge portion of the window glass. The lighting device according to claim 3, wherein glass is supported. The lighting device according to claim 1, wherein the outer periphery of the case is flocked.

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