JP4283414B2 - Lamp - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lamp, and more particularly to a lamp that obtains a desired light distribution characteristic by reflecting light from a line light source with a reflecting mirror having a substantially concave curved shape in a side view.
[0002]
[Prior art]
Aviation obstruction lights are installed on the roof, tips, or walls of structures as air lighting that notifies the aircraft of the location of airway obstructions such as high-rise buildings, power transmission towers, or chimneys. Some of these types of aviation obstruction lights flash to emit light so as to notice the position of airway obstructions more prominently, and to be used not only at night but also in the daytime. As such a flash-type aviation obstacle light, a line light source capable of flashing light such as a xenon lamp is often used, and in order to obtain a desired light distribution characteristic, light from the line light source is reflected in a predetermined direction. It is necessary to accurately mount and arrange the reflecting mirrors in a predetermined positional relationship.
[0003]
Conventionally, in a lamp that obtains a desired light distribution characteristic by reflecting light from such a linear light source with a reflecting mirror having a substantially concave curved shape in a side view with a predetermined curvature, a peripheral portion of the reflecting mirror using a plurality of screws The holder is screwed to the holder or the reflector is formed and attached by bending.
[0004]
[Problems to be solved by the invention]
However, in such a conventional lamp, since the reflecting mirror is mounted and arranged by screwing or bending with a plurality of screws, the reflecting surface of the reflecting mirror is likely to be distorted and the reflectance is lowered. There was a problem of doing. Moreover, in order to obtain a desired light distribution characteristic, it is necessary to adjust the shape and direction of the reflecting surface with high accuracy, which complicates the manufacturing operation of the lamp and increases the cost.
An object of the present invention is to solve such a problem, and it is an object of the present invention to provide a lamp device in which a reflecting mirror can be mounted and arranged without causing distortion on a reflecting surface by an easy operation.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, a lamp according to the present invention includes a light source and a reflecting mirror that has a substantially concave curved shape in side view in which a substantially rectangular plate body is bent and reflects light from the light source in an irradiation direction. And a holder for supporting opposite side ends of the reflecting mirror, and the holder has opposite side surfaces formed with engaging portions for engaging and holding the side ends of the reflecting mirror, respectively. The engaging portion has an open end into which the reflecting mirror is inserted into an end surface of the holder, and is formed by a concave groove that is open toward the opposite side surface, and the reflecting mirror moves in the irradiation direction. Each side end of the reflecting mirror is detachably engaged and held so as to form an open concave concave shape in side view.
[0006]
In the engaging portion, the reflecting mirror may be engaged and held by the elasticity of the reflecting mirror. Furthermore, a locking end for locking the reflecting mirror inserted from the opening end at a predetermined position may be provided in the concave groove . Alternatively, a linear light source may be used as a light source, and a pair of arms may be provided on the outer surface of the holder to support both ends of the linear light source.
[0007]
Moreover, the lamp according to the present invention includes three lamp units arranged at equal intervals on the same circumference in a direction in which the light irradiation direction is radial from the center of the lamp, and each lamp unit includes a light source, a substantially rectangular shape The plate body has a substantially concave curved shape when viewed from the side, and includes a reflecting mirror that reflects light from the light source in the irradiation direction, and holders that support both opposite ends of the reflecting mirror, Engaging portions for engaging and holding each side end of the reflecting mirror are formed, and the engaging portions have open ends into which the reflecting mirror is inserted into the end surface of the holder. In addition, each side end of the reflecting mirror is detachable so that the reflecting mirror is formed in a concave groove opened toward the opposite side surface, and the reflecting mirror has a substantially concave curved shape in side view opened in the irradiation direction. You may make it engage and hold.
A line light source may be used as the light source, and the line light source may be arranged so that the light emitting part is within the lateral width range of the reflector in front view. The front end of the side surface of the holder is curved along the engaging part. May be.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described with reference to the drawings.
1 is a block diagram showing a lamp according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is a plan view of the lamp with the globe removed. Below, the lighting device of the present invention will be described by taking an aviation obstacle light as an example. 1 to 3, the lamp includes a bottomed cylindrical lamp body 1 having an opening 1 </ b> A on the upper side, and a disk-shaped support plate 6 attached so as to close the opening 1 </ b> A of the lamp body 1. The lamp units 3A to 3C, which are arranged on the upper side of the support plate 6 and irradiate a flash light to the outside, are attached to the opening 1A of the lamp body 1 so as to cover the lamp units 3A to 3C having translucency from above. The globe 2 is made up of.
[0009]
A flange 11 is formed in the opening 1 </ b> A of the lamp body 1 outward from the peripheral wall of the lamp body 1, and the support plate 6 is fixed to the upper surface of the flange 11 with a screw 63. A control circuit unit 7 for causing the lamp units 3 </ b> A to 3 </ b> C to flash at a predetermined timing is disposed in the inner chamber of the lamp body 1. The peripheral wall of the lamp body 1 is provided with a hole 13 for introducing a cable (not shown) for supplying electric power from the outside to the control circuit unit 7 into the lamp body 1. The flange 11 of the lamp body 1 is formed with several support portions 12 that become thicker downward. The globe 2 has a bottomed cylindrical shape that opens downward, and its lower end 21 is fixed to the support portion 12 of the flange 11 by a screw 22.
[0010]
On the support plate 6, the lamp units 3A to 3C are arranged at equal intervals on the same circumference so that the respective irradiation directions are radially equal from the center of the lamp in the horizontal direction at equal angular intervals, here, 120 °. Has been. The lamp units 3A to 3C include a line light source 5 that emits flash light such as a xenon lamp, a reflection mirror 4 that reflects light from the line light source 5 to the outside of the lamp, and a predetermined positional relationship between the line light source 5 and the reflection mirror 4. It is comprised from the holder 30 supported by. The linear light source 5 is arranged such that its longitudinal direction is perpendicular to the front surface of the lamp unit in the irradiation direction and is horizontal. The reflecting mirror 4 has a reflection curved surface having a substantially concave curved shape in a side view opened in the irradiation direction, and is engaged and held in a bowl shape parallel to the longitudinal direction of the linear light source 5 that is concave in the front-rear direction as a whole. Yes.
[0011]
The support plate 6 has a hole 61 for convection of air heated inside the lamp, and a hole 62 for wiring a cord (not shown) for connecting the control circuit unit 7 and the lamp units 3A to 3C. Is provided. Note that the holes 61 may be used for wiring. In particular, the control circuit unit 7 is disposed near the center of the lamp body 1 and directly below the lamp units 3A to 3C disposed on the upper side of the support plate 6, and a hole 61 is provided in the upper support plate 6 thereof. As a result, air heated inside the lamp can be efficiently convected.
[0012]
Further, by providing the holes 62 at the side positions of the lamp units 3A to 3C, the cords connecting the lamp units 3A to 3C and the control circuit unit 7 can be wired without waste. Further, since the support plate 6 is screwed to the lamp body 1 at the side positions of the lamp units 3A to 3C, the support plate 6 and the lamp units 3A to 3C are mounted without damaging the linear light source 5 or the reflecting mirror 4. And can be easily and safely performed during assembly and maintenance.
[0013]
Next, the configuration of the lamp unit will be described with reference to FIGS. FIG. 4 is a configuration diagram showing the lamp unit, and FIG. 5 is an explanatory diagram showing the reflecting mirror. The holder 30 is composed of side plates 31 and 32 that are opposed to each other on the left and right sides, and an upper plate 33 and a lower plate 34 that connect the upper and lower ends of the side plates 31 and 32 in the horizontal direction. The reflecting mirror 4 is made of a substantially rectangular thin plate of an elastic metal such as aluminum, and a mirror surface is formed on the reflecting surface 4A by aluminum vapor deposition or the like. Grooves 31 </ b> A and 32 </ b> A (engaging portions) for detachably engaging and holding the reflecting mirror 4 are provided on the inner side surfaces where the side plates 31 and 32 face each other.
[0014]
The grooves 31A and 32A have a concave groove shape opened toward the opposing inner surface, and the left and right side portions 41 and 42 of the reflecting mirror 4 are inserted and held in the grooves 31A and 32A. Here, the grooves 31 </ b> A and 32 </ b> A are formed with a predetermined curvature in the front-rear direction, following the substantially concave curved shape in side view of the reflecting mirror 4 from which desired light distribution characteristics can be obtained. Therefore, when the plate-like reflecting mirror 4 is engaged and held by the grooves 31A and 32A, the reflecting surface 4A has an ideal substantially concave shape when viewed from the side, and a desired light distribution characteristic is obtained as a whole. In the reflecting mirror 4, the side portions 41 and 42 are pressed against the side walls of the grooves 31 </ b> A and 32 </ b> A by its elasticity, and are engaged and held with an appropriate force. Arms 35 and 36 projecting to the left and right front positions of the reflecting mirror 4 are fixed to the outer surfaces of the side plates 31 and 32, and the side end 52 of the line light source 5 is supported by the tips of the arms 35 and 36. Yes. Thereby, the reflecting mirror 4 and the light emitting part 51 of the line light source 5 are arranged in a predetermined optical positional relationship.
[0015]
Thus, the grooves 31A and 32A corresponding to the curvature of the reflecting mirror 4 are formed on the inner side surfaces of the side plates 31 and 32 of the holder 30, and the left and right side portions 41 and 42 of the reflecting mirror 4 can be freely attached and detached with the grooves 31A and 32A. Compared to the conventional case where the peripheral part of the reflector is screwed to the holder using a plurality of screws or the reflector is formed and attached by bending, as in the past. As a result, no distortion occurs on the reflection curved surface of the reflecting mirror, and a good light distribution characteristic can be obtained. In addition, the assembling work is simplified, and it is not necessary to adjust the reflection curved surface to obtain a desired light distribution characteristic, so that the lamp manufacturing process can be simplified and the cost can be reduced.
[0016]
FIG. 6 shows an actual measurement example of the vertical light distribution characteristic of an aircraft obstacle light (medium intensity white flashlight / daytime single flash) according to the present invention. The vertical axis represents the irradiation angle in the vertical (up and down) direction, that is, the vertical angle, where the horizontal direction is 0 °, the top is 90 °, and the bottom is −90 °. The horizontal axis is the effective luminous intensity (cd), and shows how much light is irradiated in which vertical angle direction. In the case of aviation obstruction lights, the light distribution downward is restricted in consideration of light damage to houses at night. Especially in the range of 0 ° from the horizontal direction to -1 ° below, the upper and lower specification limits Are close to each other, and the standards are strictly limited. According to the present invention, it is possible to cope with such a standard only by forming the grooves 31A and 32A in accordance with the curvature of the reflecting mirror 4.
[0017]
As for the grooves 31A and 32A, as shown in FIG. 5B, an opening end 37A that opens to the front end surfaces (or upper end surfaces) of the side plates 31 and 32 may be formed at the upper ends of the grooves 31A and 32A. Thereby, the reflecting mirror 4 can be inserted into the grooves 31A and 32A from the opening end 37A at the front upper end of the holder 30, and the lamp unit assembly work and the reflecting mirror replacement work can be performed more easily. Further, the locking end 37B may be configured by forming the lower ends of the grooves 31A, 32A up to the front end surface without opening the front end surfaces of the side plates 31, 32. Thereby, the reflecting mirror 4 inserted into the grooves 31A and 32A can be easily locked at a desired position.
[0018]
As for the reflecting mirror 4, the side portions 41 and 42 may be cut off at the corner portions 43 and 44 at the lower end where insertion into the grooves 31A and 32A is started. Thereby, the reflecting mirror 4 can be arranged further downward from the locking ends 37B of the grooves 31A and 32A, and the light from the line light source 5 can be reflected more efficiently by using a reflecting mirror longer than the length of the grooves 31A and 32A. . Further, by cutting the corner portions 43 and 44 obliquely, the width of the reflecting mirror 4 becomes narrow at the insertion start end, and insertion can be easily started in the grooves 31A and 32A. Furthermore, not only the lower end but also the corners 45 and 46 at the upper end are notched obliquely so that the reflecting mirror 4 can be arranged from the opening end 37A of the grooves 31A and 32A to the upper direction, which is longer than the length of the grooves 31A and 32A. The light from the line light source 5 can be reflected more efficiently by using the reflecting mirror.
[0019]
Regarding the upper plate 33 and the lower plate 34, the reflecting mirror 4 protrudes from the opening end 37A and the locking end 37B of the grooves 31A and 32A to the front end lower corner portion 33C of the upper plate 33 and the front end upper corner portion 34C of the lower plate 34. You may provide a taper along. Thereby, also the part which protrudes from the opening end 37A or the latching end 37B among the reflective mirrors 4 can be supported with a predetermined curvature, and a desired light distribution characteristic can be obtained.
The left and right front end corners 33A and 33B of the upper plate 33 and the left and right front end corners 34A and 34B of the lower plate 34 may be cut out in a key shape. Thereby, lamp unit 3A-3C can be arrange | positioned near the inner peripheral wall of the globe 2, and the light from the line light source 5 and the reflective mirror 4 can be efficiently irradiated outside. Further, this notch makes it easy to grasp the upper end corners 45 and 46 of the reflecting mirror 4, and the reflecting mirror 4 can be easily inserted and removed.
[0020]
As a means (engagement part) for engaging and holding the reflecting mirror 4, the grooves 31 </ b> A and 32 </ b> A formed on the inner side surfaces of the side plates 31 and 32 have been described as examples, but are not limited to such concave grooves. . For example, you may make it form the protrusion or many convex part which protrudes from the inner surface of the side plates 31 and 32 instead of a ditch | groove according to a predetermined curvature. The protrusions or multiple protrusions may be formed in parallel for two rows so as to sandwich the side portions 41 and 42 of the reflecting mirror 4, and the back surfaces of the side portions 41 and 42 (on the side opposite to the reflecting surface). It may be formed only on the surface) side and may be engaged and held by the elasticity of the plate-like reflecting mirror 4.
[0021]
In the above description, the aviation obstacle light in which the three lamp units 3A to 3C are radially arranged has been described as an example, but the present invention is not limited to this. For example, the present invention can be applied to a lamp with one lamp unit, and the same effects as described above can be obtained. Further, as described above, by arranging the three lamp units 3A to 3C at equal intervals on the same circumference in the direction in which the irradiation direction is radial from the center of the lamp, it is even in the circumferential direction of the lamp. Light distribution characteristics can be obtained.
FIG. 7 shows an actual measurement example of the horizontal light distribution characteristic at a vertical angle of 0 ° (horizontal direction) of an aircraft obstacle light (medium intensity white flashlight / daytime single flashlight) according to the present invention. The angle axis indicates a horizontal angle that increases clockwise when the front of the lamp unit 3A in the irradiation direction is 0 °. The radial axis is the effective luminous intensity (cd), which indicates how much light is irradiated in which horizontal angle direction.
[0022]
In the case of an aviation obstacle light, it is impossible to specify from which direction the aircraft will see the aviation obstacle light, and therefore, a uniform light distribution characteristic is required over the entire circumference. Thus, by arranging the three lamp units 3A to 3C in a radial manner, a uniform light distribution characteristic in the circumferential direction of the lamp can be obtained with the minimum number of lamp units. In particular, the front ends of the side plates 31 and 32 may be curved toward the rear end side along the grooves 31A and 32A. Thereby, the light reflected by the reflecting mirror 4 is emitted also in the left-right direction of the lamp unit, and light can be distributed with spreading from the front to the left in the irradiation direction. Further, the lateral width of the reflecting mirror 4 may be longer than the light emitting portion (arc length) 51 of the line light source 5. As a result, the light from the line light source 5 can be efficiently controlled by the reflecting mirror 4, and leakage light and reflected light in a direction different from the desired direction from the light emitting unit 51 protruding from the reflecting mirror 4 is reduced. And a well-balanced light distribution can be obtained.
[0023]
【The invention's effect】
As described above, the present invention includes a plate-like reflecting mirror having a reflecting surface that reflects light from a light source in the irradiation direction, and a holder that supports each side end of the reflecting mirror with side surfaces facing each other. , On the side surfaces of the holder facing each other, an engaging portion is formed that detachably engages and holds each side end of the reflecting mirror so as to form a substantially concave curved shape in side view when the reflecting mirror is opened in the irradiation direction , These engaging portions are formed as concave grooves having an opening end into which the reflecting mirror is inserted on the end surface of the holder and opened toward the opposite side surface, and the reflecting mirror is opened in the irradiation direction. Since each side end of the reflecting mirror is detachably engaged and held so as to form a substantially concave curve, the peripheral portion of the reflecting mirror can be screwed to the holder using a plurality of screws as in the past. Compared to the one that forms and attaches the reflector by bending Good light distribution characteristic without distortion occurs in the reflection curved surface of the reflector is obtained. In addition, the assembling work is simplified, and it is not necessary to adjust the reflection curved surface to obtain a desired light distribution characteristic, so that the lamp manufacturing process can be simplified and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a lamp according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a plan view when a glove is removed.
FIG. 4 is a configuration diagram illustrating a lamp unit.
FIG. 5 is an explanatory view showing a reflecting mirror.
FIG. 6 is an actual measurement example of vertical light distribution characteristics.
FIG. 7 is an example of actual measurement of horizontal light distribution characteristics.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lamp body, 11 ... Flange, 12 ... Support part, 13 ... Hole, 2 ... Globe, 21 ... Globe lower end, 22 ... Screw, 3A-3C ... Lamp unit, 30 ... Holder, 31 ... Side plate, 31A ... Groove ( Engaging portion), 32 ... side plate, 32A ... groove, 33 ... upper plate, 33A, 33B ... upper plate front end corner, 33C ... upper plate front end lower corner, 34 ... lower plate, 34A, 34B ... lower plate front end corner 34C ... Lower corners at the front end of the lower plate, 35, 36 ... Arm, 37A ... Groove opening end, 37B ... Groove locking end, 4 ... Reflector, 4A ... Reflecting surface, 41, 42 ... Reflector side, 43, 44 ... Reflector lower end corner, 45, 46 ... Reflector upper end corner, 5 ... Line light source, 51 ... Light emitting part, 52 ... Line light source side part, 6 ... Support plate, 61, 62 ... Hole, 63 ... Screw.

Claims (7)

A light source, a reflecting mirror that has a substantially concave curved shape in a side view in which a substantially rectangular plate body is bent, and that reflects light from the light source in an irradiation direction, and holders that support opposite side ends of the reflecting mirror. Prepared,
The holder has side surfaces facing each other formed with engaging portions for engaging and holding each side end of the reflecting mirror, respectively.
The engaging portion has an opening end into which the reflecting mirror is inserted into an end surface of the holder, and is formed by a concave groove that is open toward an opposite side surface, and the reflecting mirror is opened in the irradiation direction. A lamp device characterized in that each side end of the reflecting mirror is detachably engaged and held so as to form a substantially concave curved shape in side view. The lamp of claim 1,
The said engaging part engages and holds the said reflective mirror with the elasticity of the said reflective mirror, The lamp | ramp characterized by the above-mentioned. The lamp of claim 1 ,
The lamp is characterized in that the concave groove has a locking end for locking the reflecting mirror inserted from the opening end at a predetermined position. The lamp of claim 1,
A line light source is used as the light source,
The lamp device further comprising a pair of arms fixed to the outer surface of the holder and supporting both ends of the line light source. It is equipped with three lamp units arranged at equal intervals on the same circumference in the direction in which the light irradiation direction is radial from the center of the lamp,
Each lamp unit has a light source, a substantially concave curved shape in a side view in which a substantially rectangular plate is bent, and supports a reflecting mirror that reflects light from the light source in an irradiation direction, and opposite side ends of the reflecting mirror. A holder for
The holder has side surfaces facing each other formed with engaging portions for engaging and holding each side end of the reflecting mirror, respectively.
The engaging portion has an opening end into which the reflecting mirror is inserted into an end surface of the holder, and is formed by a concave groove that is open toward an opposite side surface, and the reflecting mirror is opened in the irradiation direction. A lamp device characterized in that each side end of the reflecting mirror is detachably engaged and held so as to form a substantially concave curved shape in side view. The lamp of claim 1 or 5 ,
A lamp characterized in that a linear light source is used as the light source, and the linear light source is disposed so that a light emitting portion thereof falls within a lateral width range of the reflecting mirror in a front view. The lamp of claim 1 or 5 ,
The front end of the side surface of the holder is curved along the engaging portion.

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