JP4447754B2 - 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 light source capable of flashing light such as a xenon lamp is often used, and in order to obtain a desired light distribution characteristic, a reflection that reflects light from the light source in a predetermined direction is used. It is necessary to mount and arrange the mirror with a predetermined positional relationship with high accuracy.
[0003]
In a lamp that obtains the desired light distribution characteristics by reflecting light from such a linear light source with a reflecting mirror having a substantially concave curved shape in side view with a predetermined curvature, the light distribution takes into account the light damage to the surrounding environment. It may be necessary to finely adjust the characteristics. For example, in the case of an aviation obstruction light installed on the wall or roof of a building, the light distribution characteristics may be adjusted so that the aviation obstruction light is not strongly irradiated to the building window or the building window opposite the building.
Conventionally, in such a lamp, a light shielding plate is provided on the front side of the light source and the reflecting mirror to adjust the light distribution characteristics.
[0004]
[Problems to be solved by the invention]
However, in such a conventional lamp, since the light distribution characteristics are adjusted by providing a light shielding plate in front of the light source and the reflecting mirror, the light intensity is partially reduced by the light shielding plate, and consideration is given to light pollution. However, there was a problem that it was not possible to efficiently irradiate all of the light from the light source.
The present invention has been made to solve such problems, and an object thereof is to provide a lamp capable of adjusting light distribution characteristics in consideration of light pollution without lowering the luminous intensity.
[0005]
[Means for Solving the Problems]
In order to achieve such an object, a lamp according to the present invention includes a linear light source extending left and right as viewed from the front of the light irradiation direction, and a substantially concave curve in a side view in which a substantially rectangular plate body is bent. A reflecting mirror configured to reflect the light from the light source in the irradiation direction, and a holder for supporting both side ends of the reflecting mirror facing each other in the longitudinal direction of the light source. A plurality of engaging portions to be engaged and held are formed on the side surfaces with individual curvatures following the substantially concave curved shape when viewed from the side. Each side end of the reflecting mirror is detachably engaged and held so as to form a substantially concave curved shape in individual side view opened in the irradiation direction.
[0006]
About each engaging part, you may form with the ditch | groove open | released toward the side surface facing the said side surface. In this case, each concave groove may be formed to have a common opening end into which the reflecting mirror is inserted into the end face of the holder, and to have an opening end into which the reflecting mirror is inserted into the end face of the holder individually. It may be formed. Further, each concave groove may be provided with a locking end for locking the reflecting mirror inserted from the opening end at a predetermined position.
Moreover, about the arrangement | positioning of each ditch | groove, those one ends may be shared, and you may arrange | position from the light source side back in order with a large curvature, and it arrange | positions and arrange | positions it arrange | positioning at the position shifted by a different distance back from the light source with substantially the same curvature. Also good.
[0007]
The light source holding mechanism, and two mounting members which are secured to each of the two side plates that form the opposing sides of the holder, the two blocks to hold the side edge of the mounted on each of the mounting members sources These blocks may be attached to the mounting member so as to be movable in the front-rear direction of the reflecting mirror via screws, and may be urged in a direction away from the mounting member by a spring. Further, an anti-rotation member having an L-shaped cross section may be provided that is installed on these two blocks and suppresses the rotation of each block around the screw.
In addition, as another light source holding mechanism, there are two attachment members fixed to each of two side plates that form opposite side surfaces of the holder, and a concave portion that is attached to each of these attachment members and formed on the upper side surface. For example, two blocks that hold the side end portion of the light source with V-shaped grooves are provided, and the side end portion of the light source is pressed toward the concave portion side of the block with a pressing member attached to each of the mounting members. Good.
[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. In the figure, the lamp includes a bottomed cylindrical lamp body 1 having an opening 1A on the upper side, a disk-shaped support plate 6 attached so as to close the opening 1A of the lamp body 1, and The lamp units 3A to 3C that are arranged on the upper side of the support plate 6 and irradiate flash light to the outside, and 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. It consists of a globe 2.
[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 3 </ b> A to 3 </ b> C include a linear light source (hereinafter referred to as a linear light source) 5 such as a xenon lamp, a reflecting mirror 4 that reflects light from the linear light source 5 to the outside of the lamp, and these linear light sources 5. And a holder 30 that supports the reflecting mirror 4 in a predetermined positional relationship. 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 thin metal plate having elasticity such as aluminum, and a mirror surface is formed on the reflecting surface 4A by aluminum vapor deposition or the like. A plurality of grooves 38 (engagement 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, and here, two grooves 38A and 38B are provided. . The number of grooves 38 may be two or more.
[0014]
The groove 38 has 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 into the groove 38 to be engaged and held. Here, these grooves 38A and 38B are respectively provided with individual predetermined curvatures in the front-rear direction in accordance with the substantially concave curved shape in a side view of the reflecting mirror 4 that can obtain a desired light distribution characteristic assuming light damage to the surrounding environment. It is formed with. Therefore, when the plate-like reflecting mirror 4 is engaged and held by the groove 38A or groove 38B, the reflecting surface 4A has an ideal substantially concave shape when viewed from the side, and the desired arrangement considering light pollution as a whole. Optical characteristics can be obtained. In the reflecting mirror 4, the side portions 41 and 42 are pressed against the side walls of the grooves 38A and 38B due to 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]
As described above, a plurality of grooves 38 corresponding to different curvatures and directions 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 detachably attached to either of them. Since one of these grooves 38 is selected and used, the light distribution characteristic is adjusted by providing a light shielding plate on the front side of the light source and the reflecting mirror as in the prior art. In comparison, it is possible to obtain a desired light distribution characteristic in consideration of light damage to the surrounding environment without reducing the overall luminous intensity. Since only one of the grooves corresponding to the desired light distribution characteristic is selected, the periphery of the reflector is screwed to the holder using a plurality of screws, and the reflector is formed and attached by bending. Compared with the conventional one, distortion is not generated on the reflection curved surface of the reflecting mirror, and good light distribution characteristics 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]
As for the groove 38, as shown in FIG. 5B, an opening end 37 </ b> A that opens to the front end surfaces (or upper end surfaces) of the side plates 31 and 32 may be formed at the upper end of the groove 38. Accordingly, the reflecting mirror 4 can be inserted into the groove 38 from the opening end 37A at the front upper end of the holder 30, and not only the light distribution characteristic adjustment work but also the lamp unit assembly work and the reflector replacement work can be performed more easily. . Further, the locking end 37B may be configured by forming the lower end of the groove 38 not to open to the front end surfaces of the side plates 31 and 32 but before the front end surface. Thereby, the reflecting mirror 4 inserted into the groove 38 can be easily locked at a desired position.
[0017]
As for the reflecting mirror 4, the side portions 41 and 42 may be cut out at the corner portions 43 and 44 at the lower end where insertion into the groove 38 is started. Thereby, the reflecting mirror 4 can be arranged further downward from the locking end 37 </ b> B of the groove 38, and the light from the line light source 5 can be more efficiently reflected using a reflecting mirror longer than the length of the groove 38. 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 into the groove 38 can be easily started. 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 groove 38 further upward, and a reflecting mirror longer than the length of the groove 38 is used. Thus, the light from the line light source 5 can be reflected more efficiently.
[0018]
With respect to the upper plate 33 and the lower plate 34, along the reflector 4 protruding from the opening end 37A and the locking end 37B of the groove 38 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. A taper may be provided. 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.
[0019]
The relationship between the groove 38 and the light distribution characteristic is shown in FIG. In FIG. 6A, the three grooves 38A to 38C have a common upper end (opening end 37A), and the curvature of the middle groove 38B is formed so that parallel light can be obtained. Further, a groove 38A having a larger curvature than the groove 38B is formed at a position closer to the line light source 5 than the groove 38B, and a groove 38C having a smaller curvature than the groove 38B is formed at a position farther from the groove 38B to the line light source 5. Yes. Thereby, when the groove 38C is used, a light distribution characteristic 39C diffusing downward is obtained, and when the groove 38A is used, a light distribution characteristic 39A with reduced downward irradiation is obtained. As described above, if one end of the grooves 38A to 38C is shared and arranged rearward from the line light source 5 in the descending order of curvature, the light distribution characteristic downward or upward can be easily adjusted by selecting any one of the grooves. it can.
[0020]
In FIG. 6B, the three grooves 38D to 38F have individual opening ends 37A, and the curvature of the middle groove 38E is formed so that parallel light can be obtained. Further, the groove 38E is translated to a position close to the line light source 5 to form a groove 38D having substantially the same curvature, and the groove 38E is translated to a position far from the line light source 5 to form a groove 38F having substantially the same curvature. Yes. Thereby, when the groove 38D is used, a light distribution characteristic 39D that diffuses in the vertical direction is obtained, and when the groove 38F is used, a light distribution characteristic 39F with reduced irradiation in the vertical direction is obtained. As described above, if the grooves 38D to 38F having substantially the same curvature are translated from the line light source 5 and arranged in different positions in the front-rear direction, the light distribution characteristics in the vertical direction can be easily selected by selecting one of the grooves. Can be adjusted.
[0021]
As a means for engaging and holding the reflecting mirror 4 (engagement portion), the groove 38 formed on the inner surface of the side plates 31 and 32 has been described as an example, but is not limited to such a concave groove. 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. About this convex line or many convex parts, you may form in parallel for 2 rows so that the side parts 41 and 42 of the reflective mirror 4 may be inserted | pinched, and the back surface (side opposite to a reflective surface) of the side parts 41 and 42 may be formed. May be formed only on the surface) side, and may be engaged and held by the elasticity of the plate-like reflecting mirror 4.
[0022]
Next, the holding mechanism for the line light source 5 will be described with reference to FIGS. FIG. 7 is an explanatory diagram showing the holding mechanism for the line light source, and FIG. 8 is an explanatory diagram showing the relationship between the light source position and the light distribution characteristics.
The line light source 5 is held by the light source holding mechanism 7 so as to extend near the focal position of the reflecting mirror 4. The light source holding mechanism 7 includes an arm (attachment member) 71 erected on the outer surface of the side plate 31 (32), a block 72 that holds the side end 52 of the line light source 5, and the block 72 that reflects the reflecting mirror 4. The screw 74 is attached to the arm 71 so as to be movable in the front-rear direction, and a spring 75 that urges the block 72 and the arm 71 in a separating direction.
[0023]
A concave portion 72A such as a V-shaped groove is provided on the upper side surface of the block 72, and the side end portion 52 of the line light source 5 is held by the concave portion 72A. A plate spring (pressing member) 76 is attached to the upper end of the arm 71, and the side end 52 of the line light source 5 is pressed toward the concave portion 72 </ b> A by the plate spring 76. An L-shaped member (non-rotating member) 73 having an L-shaped cross section is installed on both blocks 72 by screws 74 and suppresses the rotation of the block 72 around the screws 74 as an axis.
By using such a light source holding mechanism 7, the position of the line light source 5 held by the block 72 can be finely adjusted in the front-rear direction with respect to the reflecting mirror 4 by an extremely easy operation of turning the screw 74. Can do.
[0024]
Therefore, as shown in FIG. 8, the light distribution characteristic can be easily finely adjusted. For example, when the line light source 5 is at the focal position 5H of the reflecting mirror 4, a light distribution characteristic 39H composed of parallel rays is obtained. Further, when the line light source 5 is arranged at a position 5G behind the focal position 5H, a light distribution characteristic 39G that diffuses in the vertical direction is obtained, and when the line light source 5 is arranged at a position 5I ahead of the focal position 5H. A light distribution characteristic 39I with reduced irradiation in the vertical direction is obtained. Further, since the side end portion 52 of the line light source 5 is held by the recess 72A, the spring 75, and the leaf spring 76 of the block 72, the line light source 5 can be held with an appropriate holding force and vibrations can be absorbed. The replacement work of the line light source 5 can be easily performed. In particular, by using a V-shaped groove as the recess 72A, the line light source 5 can be securely held without misalignment with a structure that can be easily formed, and the replacement work of the line light source 5 is further facilitated.
[0025]
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.
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.
[0026]
The front ends of the side plates 31 and 32 may be curved toward the rear end side along the groove 38. 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.
[0027]
【The invention's effect】
As described above, the present invention has a linear light source extending from side to side as viewed from the front of the light irradiation direction, and a substantially concave curved shape in a side view in which a substantially rectangular plate is bent. And a holder that supports each side end of the reflector in the longitudinal direction of the light source in the longitudinal direction of the light source in the longitudinal direction of the light source. A plurality of engaging portions for engaging and holding each side end are provided, and side surfaces facing each other are provided, and each engaging portion is formed on the side surface with an individual curvature following a substantially concave curved shape in side view. Since each side end of the reflecting mirror is detachably engaged so as to form a substantially concave curved shape when viewed from the side in which the reflecting mirror is opened in the irradiation direction, any one of these engaging portions By selecting and using, as in the past, light is blocked on the front side of the light source and reflector The compared to that for adjusting the light distribution characteristics is provided, without reducing the overall light intensity, it is possible to obtain a desired light distribution characteristic in consideration of the light pollution to the surrounding environment.
[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 explanatory diagram showing the relationship between grooves and light distribution characteristics.
FIG. 7 is an explanatory view showing a light source holding mechanism.
FIG. 8 is an explanatory diagram showing a relationship between a light source position and a light distribution characteristic.
[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, 32 ... Side plate, 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 plate front end upper corner, 35, 36 ... arm, 37A ... groove opening end, 37B ... groove locking end, 38, 38A to 38F ... groove (engagement part), 39A to 39F ... light distribution characteristics, 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 ... Side end, 6 ... Support plate, 61, 62 ... Hole, 63 ... Screw, 7 ... Light source holding mechanism, 71 ... Arm (attachment member), 72 ... Block, 73 ... L Member (retainer) 74 ... screw, 75 ... spring, 76 ... plate spring (pressing member).

Claims (11)

Light irradiation direction A linear light source extending left and right when viewed from the front, and a substantially rectangular plate body having a substantially concave curved shape in side view bent in the irradiation direction, light from the light source in the irradiation direction A reflecting mirror and a holder that supports both side ends of the reflecting mirror facing each other in the longitudinal direction of the light source;
The holder has side surfaces opposed to each other formed with a plurality of engaging portions for engaging and holding the side ends of the reflecting mirror, and the engaging portions have a substantially concave curve shape in the side view. Each side end of the reflecting mirror is detachably engaged so as to form a substantially concave curved shape when viewed from the side when the reflecting mirror is formed in the side surface with an individual curvature. A lamp characterized by holding together. The lamp of claim 1,
Each said engaging part is formed with the ditch | groove open | released toward the said side surface facing the said side surface, The lamp | ramp characterized by the above-mentioned. The lamp of claim 2,
Each of the concave grooves has a common opening end into which the reflecting mirror is inserted into an end surface of the holder. The lamp of claim 2,
Each of the concave grooves individually has an opening end into which the reflecting mirror is inserted into an end surface of the holder. The lamp of claim 3 or 4,
Each said ditch | groove has a latching end for latching the said reflective mirror inserted from the said opening end in a predetermined position, The lamp device characterized by the above-mentioned. The lamp of claim 2,
Each said ditch | groove is arrange | positioned from the light source side back to the back in order with a large curvature by making those one end common, The lamp | ramp characterized by the above-mentioned. The lamp of claim 2,
Each said ditch | groove is arrange | positioned side by side in the position which moved in parallel by the different distance from the light source with the substantially same curvature back. The lamp of claim 1,
Two mounting members fixed to each of two side plates forming the side surfaces of the holder facing each other;
Two blocks that are attached to each of the attachment members and hold the side ends of the light source,
These blocks are attached to the attachment member so as to be movable in the front-rear direction of the reflecting mirror via screws, and are urged in a direction away from the attachment member by a spring. . The lamp of claim 8,
A lamp device, further comprising an anti-rotation member having an L-shaped cross section, which is installed on the two blocks and suppresses the rotation of the respective blocks around the screw. The lamp of claim 1,
Two mounting members fixed to each of two side plates forming the side surfaces of the holder facing each other;
Two blocks that are attached to each of these attachment members and hold the side end portion of the light source in a recess formed on the upper side surface;
A lamp device, further comprising: a pressing member attached to each of the attachment members and pressing a side end portion of the light source toward the concave portion of the block. The lamp of claim 10,
The recessed part of the said block consists of V-shaped grooves, The lamp | ramp characterized by the above-mentioned.

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