JPH09129002A - Spot light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To well balance a spot light in an installed state and hardly cause it to fall down. SOLUTION: A spot light has an approximately cylindrical mainbody 1 provided with a projecting lens 2 held in front of a lamp 5, a light controller 3 arranged in a light passage ranging from the lamp 5 inside the mainbody 1 to the projecting lens 2 and provided with an operating part protruded from the approximately cylindrical side wall 1a of the mainbody 1 to the outside and a mirror part 7 located in front of the projecting lens 2 to reflect light from the lamp 5 transmitted through the projecting lens 2. It has a mounting portion 4 provided on the side wall 1a of the main body 1 on the projecting lens 2 side of the light controller 3 to be freely slidable in the direction of connecting the projecting lens 2 to the light controller 3 so that the mainbody 1 can be rotationally moved in a vertical plane and suspended in given attitude. The mirror 7 is provided with an adjuster 7a to move the mirror 7 and change the reflecting direction of light from the lamp 5 transmitted through the projecting lens 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spotlight, and more particularly to a spotlight including a light control unit such as a cutter arranged on an optical path inside a main body of an instrument.

[0002]

2. Description of the Related Art FIG. 9 shows a conventional spotlight. This spotlight is mainly used for a fixture body 1
And a light projecting lens section 2, a light control section 3, and a mounting section 4, and are configured to emit light toward the irradiation direction on the light projecting lens section 2 side which is the front surface side of the instrument body 1. There is.

The instrument main body 1 has a substantially cylindrical shape with one opening, and a light projecting lens portion 2 having a plurality of lenses is slid in the substantially cylindrical axial direction on the opening side which is the front side thereof. The lamp 5 is movably arranged, the rear surface of which houses the lamp 5, and the rear surface of the lamp 5 is provided with a reflecting mirror 6 for reflecting the light emitted from the lamp 5 to the rear surface to the front surface. There is.
Further, a plurality of slits (not shown) are provided on the substantially cylindrical side surface of the instrument body 1 and between the light projecting lens unit 2 and the lamp 5 in a direction perpendicular to the substantially cylindrical axis. A light control unit 3, for example, a cutter 3a is inserted and held in the slit. The cutter 3a is provided with a substantially plate-shaped cutter blade 3b and an operating portion 3c which is a knob for inserting the cutter blade 3b into the slit. It is configured to be inserted from four sides in a sectional direction substantially perpendicular to the central axis, and the optical path in the instrument body 1 can be expanded and contracted depending on the amount of insertion, and at least the operation portion 3c is at least the instrument body 1.
It is designed to project to the outside of.

The mounting portion 4 is formed in a substantially U-shape, and is provided on the lamp 5 side which is the rear surface side of the portion of the instrument body 1 where the light control portion 3 is provided. Then, the U-shaped open end side is disposed so as to sandwich the substantially tubular side wall 1a of the instrument body 1, and the portion contacting the instrument body 1 is the instrument body 1
Is rotatable, and the front side of the instrument body 1 is directed in the irradiation direction, and is attached to the ceiling or the like by a central piece having a substantially U-shape.

[0005]

However, in the conventional spotlight constructed as described above, since the projection lens unit 2 is composed of a plurality of lenses, the weight is heavy and the center of gravity of the spotlight is If the mounting portion 4 is provided on the light projecting lens portion 2 side, which is the front side of the light control portion 3 of the device body 1, the mounting portion 4 is illuminated when the device body 1 is rotated. It interferes with the operation part 3c of the control part 3, that is, the operation part 3c hits the attachment part 4 and the instrument body 1 cannot rotate, so that the attachment part 4 is located at a position away from the center of gravity of the instrument body 1. It could be provided only on the rear side of the light control unit 3. Therefore, the balance of the spotlight mounted state is poor, and the projection lens unit 2
When it is used for a long time in a state in which it is oriented substantially in the lateral direction, the instrument body 1 gradually rotates around the mounting portion 4 and the light projecting lens portion 2 side gradually becomes downward, so-called neck sagging occurs. There was a problem.

In particular, when the spotlight is for long-distance irradiation, the light projecting lens unit 2 is provided with a plurality of 8 inch to 10 inch lenses having a relatively large aperture.
There is a problem in that the above-mentioned problem becomes more remarkable because the length of the instrument body 1 exceeds 1 m in some cases.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a spotlight that is well balanced in the mounted state and is less likely to cause neck sagging.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a substantially cylindrical shape in which a light projecting lens portion 2 is held on the front side of a lamp 5 in the invention of claim 1. The instrument body 1 and the instrument body 1 are disposed on the optical path from the lamp 5 inside the instrument body 1 to the projection lens unit 2.
The light control section 3 having an operating section 3c projecting outward from the substantially cylindrical side wall 1a, and the light from the lamp 5 on the front side of the light projecting lens section 2 and transmitted through the light projecting lens section 2. And a mirror section 7 for reflecting light, which is located on the side of the side wall 1a of the fixture body 1 and closer to the light projecting lens section 2 than the portion where the light control section 3 is disposed. It is characterized in that a mounting portion 4 for suspending the instrument body 1 in a predetermined posture by rotating the instrument body 1 in the vertical direction is provided.

According to a second aspect of the invention, in the spotlight according to the first aspect, the mirror portion 7 is provided.
In addition, an adjusting section 7a is provided to control the reflection direction of the light from the lamp 5 that has passed through the light projecting lens section 2 by moving the mirror section 7 and adjust the irradiation direction of the light. Is.

Further, in the invention according to claim 3, in the spotlight according to claim 1 or 2, the mounting portion 4 is connected to the light projecting lens portion 2 and the light control portion 3. It is characterized in that it is slidable in any direction.

[0011]

1 to 6 show a first embodiment of a spotlight according to the present invention. This spotlight is installed, for example, in the vicinity of the ceiling and is mainly located relatively far away. A spotlight that illuminates diagonally downward,
It is mainly configured to include the instrument main body 1, the light projecting lens unit 2, the light control unit 3, the mounting unit 4, and the mirror unit 7.

The instrument main body 1 has a substantially rectangular tube shape that is open to the front side, which is one side, and the rear surface side of the substantially cylindrical shape is closed by the end plate 1b. A light projecting lens unit 2 including a plurality of lenses is provided. The light projecting lens portion 2 is a side wall 1a of the instrument body 1 having a substantially rectangular tube shape.
It is slidable in the axial direction of the instrument main body 1 along a sliding bar 2a provided inside, and the sliding allows the focus adjustment. Further, a socket 5a to which the lamp 5 is attached and a reflecting mirror 6 for reflecting the light traveling from the lamp 5 toward the rear surface to the front surface side are attached to the end plate 1b on the rear surface side of the instrument body 1. The end plate 1b is detachably attached to the rear surface side of the instrument body 1 and closes the rear surface side of the instrument body 1 as described above.

The light control section 3 is provided on the optical path between the light projecting lens section 2 and the lamp 5 in the main body 1 of the apparatus.
As shown in FIG. 2, the cutter 3a, the seed plate (gobo) 3d, the iris shutter 3e, and their holding plates 3f are provided, and one end of each of them is outside the side wall 1a of the instrument body 1. The operation portion 3c protruding to the inside is provided, and at least the seed plate 3d can be taken out of the instrument body 1. Although only the cutter 3a is illustrated in FIG. 1 by simplifying the light control unit 3, the cutter 3a will be described in detail below as one of the light control units 3.

The cutter 3a comprises four substantially plate-shaped cutter blades 3b having an operating portion 3c at one end, and a plate-like holding plate 3f having a hole 3g at the center thereof.
Two cutter blades 3b are provided between each of the holding plates 3f, and four cutter blades 3b are arranged so that two cutter blades 3b are substantially perpendicular to the central axis of the instrument body 1 and two cutter blades 3b face each other. ing. Actually, the cutter blade 3b is inserted into the four slits 1c provided on the side wall 1a of the instrument body 1 and is held by the holding plate 3f fixed inside the instrument body 1. And this operation part 3c
Is a knob for inserting or pulling out the cutter blade 3b into the instrument body 1, or for rotating the cutter blade 3b, and its operation narrows or widens the optical path in the instrument body 1, or It is designed to be rotated.

The mounting portion 4 is slidably provided on the side wall 1a of the instrument body 1 on the side of the light projecting lens portion 2 which is the front side of the portion of the instrument body 1 where the light control portion 3 is provided. For example, a gripping portion 4a attached to a baton provided on the ceiling, and a sliding portion 4b that slides on the side wall 1a of the instrument body 1 in the direction along the central axis thereof and can be fixed at any position. It is configured with.

As shown in FIG. 3, the mirror portion 7 is provided with a mirror body 7b which is substantially plate-shaped and is formed so that at least one surface thereof reflects light, and is adjusted to the front end of the instrument body 1. It is attached via the portion 7a. Adjustment unit 7a
Is a substantially ring-shaped rotating body 7c that is disposed with its center aligned with the central axis of the instrument body 1 and is rotatable about the central axis of the instrument body 1, and one surface of the rotating body 7c. It is constituted by a fin-like portion 7d which is provided on the side and changes the angle between the mirror body 7b and the rotating body 7c. The adjusting unit 7a can move the mirror body 7b to change the reflection direction. In addition, the rotating body 7c and the elbow-shaped portion 7d of the adjusting portion 7a can be fixed so as to maintain the state after the position is set to an arbitrary position. In the present embodiment,
The angle formed by the mirror body 7b and the rotating body 7c is about 45 degrees, and the elbow-shaped portion 7d is positioned on a line parallel to the central axis of the instrument body 1 and passing through the mounting portion 4. ing.

The spotlight thus constructed is
As shown in FIG. 4, for example, in the vicinity of the ceiling 9 on the upper side of the passenger seat 8, the mirror portion 7, which is the front side of the instrument body 1, is attached to the instrument body 1.
The stage 10 is disposed so as to be located above the rear surface side and adjusts the adjusting portion 7a of the mirror portion 7 and / or the inclination of the instrument body 1 or both, and the stage 10 is slightly separated by the reflected light of the mirror portion 7. It is attached to irradiate. At this time,
When the posture of the instrument body 1 is determined by the installation position of the spotlight and the irradiation direction of the spotlight, the attachment part 4 of the spotlight displays the center of gravity G of the spotlight in the most stable attachment state as shown in FIG. It is slid and fixed so as to be positioned on a substantially passing vertical line, and is attached to a baton or the like so as to maintain the posture of the instrument body 1. In FIG. 4, 11 indicates the front side.

With this configuration, in this spotlight, the light reflected by the mirror body 7b of the mirror portion 7 is at the end of the instrument body 1 on the side opposite to the side where the mirror portion 7 is provided. It is required that the light emitted from the end of the instrument body 1 on the side opposite to the side where the mirror portion 7 is provided is reflected by the mirror portion 7.

Therefore, assuming the state shown in FIG. 6, the light transmitted through the light projecting lens portion 2 is simplified into parallel rays and is shown in FIG.
Consider the above conditions with reference to. In the figure, P indicates the rotation center of the elbow-shaped portion 7d of the mirror body 7b. The outer shape of the instrument body 1 is 2A, and the effective diameter from which light is emitted excluding the portion holding the lens, etc. is 2B,
The distance from the tip of the instrument body 1 to the adjusting portion 7a of the mirror unit 7 is C, the inclination of the mirror body 7b is θ, and the tip of the instrument body 1 is the end on the side of the elbow-shaped portion 7d of the effective light transmission diameter. Section and the distance between the opposite ends of the instrument body 1 across the opening is E1
Then, in order to prevent the light reflected by the mirror portion 7 from being cut at the end portion on the front side of the instrument body 1 opposite to the side where the mirror portion 7 is provided, that is, the mirror body 7b.
In order to guide all the light reflected by in the irradiation direction, F = C + (AB) / tan θ E1 = (C + (AB) / tan θ) × tan (180-2
θ), it is necessary to satisfy (C + (A−B) / tan θ) × tan (180−2θ) ≧ A + B. Also, the mirror body 7b
Is D, and the end of the instrument body 1 on the side of the elbow 7d and the end of the effective transmission diameter of light on the opposite side across the opening of the instrument body 1 are E2. Then, in order that the light emitted from the end of the instrument body 1 on the side opposite to the side where the mirror portion 7 is provided is reflected by the mirror portion 7, that is, the light is transmitted through the light projecting lens portion 2. In order to reflect all the light on the mirror body 7b, it is necessary to satisfy the following condition, from E2 = A + B, D ≧ (A + B) / sin θ. In addition, it becomes necessary to set the tilt range θ of the mirror body 7b and the length D thereof.

Because of this structure, in the spotlight of this embodiment, the mounting portion 4 is
Since the light projecting lens unit 2 is provided and is heavy, it can be provided on the light projecting lens unit 2 side of the instrument main body 1 which is the side where the center of gravity of the spotlight is located, so that an excessive force is not applied to the mounting unit 4 Stable It is possible to reduce the occurrence of so-called neck sag in which the center of gravity of the instrument main body 1 is gradually directed downward. Further, since the mounting portion 4 is slidably provided on the side wall 1b of the device body 1 in a direction parallel to the central axis of the device body 1, the mounting portion 4 is attached to the center of gravity of the spotlight regardless of the posture of the device body 1. It is possible to move on a vertical line passing through the spotlight, the spotlight can be attached in the most stable state, and it is possible to prevent so-called neck sag in which the center of gravity of the instrument body 1 is gradually directed downward. Further, even if the mounting positions of the spotlights are the same, the irradiation direction can be easily changed by adjusting the direction of the mirror unit 7 with the adjusting unit 7a.

FIG. 8 shows a second embodiment of the spotlight of the present invention. The difference from the first embodiment is the mirror section 7, and the other parts are the first embodiment. The configuration is substantially the same as that of the above.

The mirror section 7 is composed of an adjusting section 7a, a mirror body 7b, and a supporting arm 7e. That is, as in the first embodiment, the adjusting portion 7a is provided at the substantially central portion on the other surface side of the mirror body 7b whose one surface side is a surface that reflects light, and the adjusting portion 7a is provided in the instrument body. It is attached to the substantially U-shaped support arm 7e attached to the end portion of the front side of the No. 1 side. The adjusting portion 7a is provided perpendicularly to the mirror body 7b and rotates the mirror body 7b in its in-plane direction. The first rotating portion 7f and the first rotating portion 7f.
It is provided between the f and the tip of the support arm 7e, and is provided with a second rotating portion 7g for changing the angle formed by the mirror body 7b and the central axis of the instrument body 1. In the figure, reference numeral 12 denotes a color filter arranged on the front side of the light projecting lens unit 2. Even with this structure, the same effects as those of the spotlight according to the first embodiment can be obtained.

Although the mounting portion 4 slides on the side wall 1a of the instrument body 1 in each of the above-described embodiments, the present invention is not limited to this, and the position of the side wall varies depending on the mounting position. It is also possible to fix the irradiation direction only by the mirror part by mounting the instrument main body substantially horizontally.

[0024]

As described above, according to the present invention, since the mounting portion is provided with the light projecting lens portion, the weight is heavy and the center of gravity of the spotlight is present. It can be provided on the side of the projection lens of the instrument body, which allows stable attachment without excessive force being applied to the attachment part, and causes the so-called neck sag in which the center of gravity of the instrument body gradually becomes downward. Can be reduced.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, even if the mounting posture of the spotlight is the same, the adjusting portion adjusts the direction of the mirror portion. Thus, the irradiation direction can be easily changed.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the mounting portion is provided on the side wall of the instrument body in a direction parallel to the central axis of the instrument body. Since it is slidably mounted on the instrument, the attachment part can be moved on the vertical line passing through the center of gravity of the spotlight regardless of the posture of the instrument body, and the spotlight can be attached in the most stable state, and the center of gravity side of the instrument body Gradually downward,
So-called neck sagging can be prevented.

[Brief description of the drawings]

FIG. 1 is a simplified configuration diagram showing a first embodiment of a spotlight of the present invention.

FIG. 2 is a perspective view showing a main part of the above light control unit.

FIG. 3 is a perspective view showing a mirror part and a main part of an instrument body of the same.

FIG. 4 is a schematic diagram illustrating a usage state of the above.

5A and 5B show the mounting postures of the above spotlight, wherein FIG. 5A is a front view in a horizontal mounting state, and FIG. 5B is a front view in a diagonal mounting state.

FIG. 6 is a model diagram for explaining the relationship between the mirror section and the tip of the instrument body of the above.

7A and 7B are views showing the main part of the above, wherein FIG. 7A is a model diagram for explaining a tilt of the mirror unit, and FIG. 7B is a model diagram for explaining a length of the mirror unit.

FIG. 8 is a simplified configuration diagram showing a second embodiment of the spotlight of the present invention.

FIG. 9 is a simplified configuration diagram showing a conventional spotlight.

[Explanation of symbols]

 1 Instrument Main Body 2 Projection Lens Section 3 Light Control Section 3c Operation Section 4 Mounting Section 5 Lamp 7 Mirror Section 7a Adjustment Section

Claims (3)

[Claims] 1. A substantially cylindrical instrument body holding a light projecting lens portion on the front side of a lamp, and an instrument body disposed inside the instrument body on an optical path from the lamp to the light projecting lens portion. A light control unit having an operation unit protruding outward from a substantially cylindrical side wall of the main body, and a mirror unit on the front side of the light projecting lens unit for reflecting light from a lamp that has passed through the light projecting lens unit. A spotlight including: and rotating the instrument body in a vertical plane inward on a side wall of the instrument body toward a light projecting lens portion side with respect to a portion where the light control portion is provided. A spotlight, characterized in that it is provided with a mounting portion which is suspended in a predetermined posture. 2. The mirror section is provided with an adjusting section for moving the mirror section to control the reflection direction of the light from the lamp that has passed through the light projecting lens section and to adjust the irradiation direction of the light. The spotlight according to claim 1, which is characterized in that. 3. The spotlight according to claim 1, wherein the mounting portion is formed so as to be slidable in a direction connecting the light projecting lens portion and the light control portion.