JP4118915B2 - Camera pedestal - Google Patents

Description

  The present invention relates to a pedestal for a camera that enables shooting from a high position in news shooting and program shooting.

Conventionally, when shooting from a high position, a scaffold is assembled and a person rides on it or takes a picture using a shooting crane device (see Japanese Patent Laid-Open No. 05-161037). It was.
However, the assembling work of the scaffold for photographing from a high place requires a great deal of labor. In addition, the shooting crane apparatus often used in a studio or the like requires a large space, cannot be used in a small shooting place, is dangerous if there are people around it, and is very expensive. .

The present invention solves the above-mentioned problem when photographing from a high place, is easy to operate, and enables photography from a high place to be performed safely even in a narrow place. The object is to provide a camera pedestal.
The camera pedestal of the present invention includes a horizontally movable carrier, a pole support portion supported on the carrier so as to be horizontally rotatable, and a lower stage erected on the pole support portion with the pivot center of the pole support portion as an axis. A telescopic pole composed of a pole, a middle stage pole, and an upper stage pole, a telescopic means for expanding and contracting the telescopic pole, and a camera fixing part supported on the upper part of the upper stage pole so as to be swingable by a support shaft perpendicular to the axis; It is hung around a tilt operation means that is rotatably attached to the lower pole by a tilt operation shaft perpendicular to the axis, and a tilt pulley provided at the upper part of the lower pole and a tilt pulley provided at the lower part of the middle pole And the front and rear wire ropes having one end connected to the tilt operation means and the other end connected to the front and rear of the support shaft of the camera fixing portion, respectively.

  Since the camera pedestal according to the present invention moves the camera up and down by extending and retracting the telescopic pole in the vertical direction, it is possible to safely shoot from a high position even in a narrow place. Even if the camera is raised to a high place where human hands cannot reach, the tilt operation means provided on the lower pole can be used for tilt operation. Since the pole support portion can be swiveled horizontally on the carrier, a pan operation around the axis of the telescopic pole can be performed, and the carrier can be moved horizontally.

This camera pedestal has a simple structure, is lightweight and inexpensive, and can be easily operated.
As an expansion / contraction means for expanding / contracting the expansion / contraction pole, a hydraulic cylinder, a ball screw, or other means can be appropriately selected. Further, the middle pole and the upper pole may be expanded and contracted simultaneously, or may be individually expanded and contracted.

  The expansion / contraction means is hung around the middle pole, the upper pole, and a constant load spring for canceling the load of the camera provided on the base of the lower pole, and a lifting pulley provided on the upper part of the lower pole, One end is connected to the constant load spring, the other end is connected to the middle pole lifting wire rope connected to the lower part of the middle pole, and the lifting pulley provided on the upper part of the middle pole, and one end is connected to the base of the lower pole. When connected with the upper pole lifting wire rope connected at the other end to the lower part of the upper pole, the load on the middle pole, the upper pole, and the camera is offset by the constant load spring. It can be moved up and down easily by human power without requiring force.

If the handle for raising and lowering and turning is attached to the middle pole, the raising and lowering and turning operations become easier.
By installing a camera monitor on the lower pole, you can easily check the video you are shooting even when you move the camera to a high place.
In addition, one end of the front and rear tilt wire ropes is connected to a tilt operation pulley provided in the tilt operation means, and the camera tilt pulley having the same diameter as the tilt operation pulley can be rotated around the support shaft. If the other end of the tilt wire rope is connected to the top of the camera tilt pulley while the camera is horizontal, the tilt operation pulley and the camera tilt pulley have the same diameter. The rotation angle of the pulley and the tilt angle of the camera are equal, and the load applied to the tilt wire rope is constant regardless of the tilt angle of the camera, so that the operability is improved.

In addition, the camera fixing part is structured so that the camera can be fixed at a position where the center of gravity is on the axis of the support shaft, so that the operating force of the tilt operating means can be kept constant even if the tilt angle of the camera changes. There is no need to provide a weight or a balance mechanism, and the weight can be reduced.
If the carrier has a caster in the moving device, it can move to any position on the plane.

  If the carrier is provided with orbital running wheels in the moving device, it is possible to accurately move along a predetermined path along the orbit.

It is a perspective view of the pedestal for cameras which shows one embodiment of the present invention. It is a side view of the pedestal for cameras. It is the sectional view on the AA line of FIG. It is a perspective view of the reduction state of the pedestal for cameras. It is explanatory drawing of the winding method of the wire rope of the pedestal for cameras. It is explanatory drawing which shows the variation | change_quantity of the tilt angle with respect to the movement amount of the wire rope for tilt. It is explanatory drawing which shows the variation | change_quantity of the tilt angle with respect to the movement amount of the wire rope for tilt. It is explanatory drawing which shows the gravity center position of the camera by a tilt angle. It is explanatory drawing which shows the gravity center position of the camera by a tilt angle. It is a side view of the pedestal for cameras which shows the state where the counterweight was provided in the tilt handle. It is explanatory drawing which shows the state which provided the balance mechanism in the camera fixing | fixed part. It is a side view of the camera fixing | fixed part which provided the pulley for camera tilts, and fixed the camera in the position where a gravity center is on the axis line of a spindle. It is a front view of the camera fixing | fixed part which provided the pulley for camera tilts, and fixed the camera in the position where a gravity center exists on the axis line of a spindle. It is a side view which shows the tilt state of the camera fixing | fixed part which provided the camera tilt pulley and fixed the camera in the position where a gravity center will be on the axis line of a spindle. It is a bottom view which shows the difference between the direction which applies the force at the time of movement operation of the camera pedestal, and an actual course. It is a perspective view of the pedestal for cameras provided with the track running wheel in the moving device. It is a front view of the moving apparatus provided with the track traveling wheel. It is a side view of the moving apparatus provided with the track traveling wheel.

1 is a perspective view of a camera pedestal showing an embodiment of the present invention, FIG. 2 is a side view of the camera pedestal, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, and FIG. FIG. 5 is an explanatory view of a method of hanging the wire rope of the camera pedestal.
In this camera pedestal, a pole support portion 15 is supported by a turning mechanism 23 on a carrier 22 that is horizontally movable by a moving device 43 having a caster 17 and a level adjusting mechanism 16. A telescopic pole 30 is erected on the support portion 15 with its turning center as the axis Y. Here, the moving device mounting bracket 42 is fixed to the carrier 22 in all directions, and the moving device 43 is mounted on the moving device mounting bracket 42. There is no problem.

The telescopic pole 30 is composed of a lower stage pole 1, an intermediate stage pole 2 and an upper stage pole 3 which are slidably fitted to each other, and a camera 31 is mounted on the upper stage pole 3 with a support shaft 31 perpendicular to the axis Y. The fixed portion 9 is supported so as to be swingable. A camera 18 is placed and fixed on the camera fixing unit 9.
A tilt operation pulley 11 is rotatably attached to the lower pole 1 with a tilt operation shaft 19 perpendicular to the axis Y. The tilt operation shaft 19 extends to the right side in FIG. 3 (left hand side when viewed from the rear side of the photographer), and the tilt operation shaft 19 and the tilt operation pulley 11 are rotated at the tip. A tilt handle 21 for performing a tilt operation is attached.

A camera monitor 24 is provided in the vicinity of the tilt operation shaft 19 of the lower pole 1.
The middle pole 2 is attached with a lifting handle 20 for changing the height of the camera 18 and the direction of the camera 18 by moving the middle pole 2 up and down and turning.
A constant load spring 5 is provided on the pole support 15 at the base of the lower pole 1. This constant load spring 5 is for canceling the loads of the middle stage pole 2, the upper stage pole 3, and the camera 18, and for example, a commercially available Conston (registered trademark) spring or the like is used.

As shown in FIG. 5, an elevating pulley 6 is provided on the upper portion of the lower pole 1, and a middle rope elevating wire rope 7 is wound around the elevating pulley 6, and one end is attached to the constant load spring 5. The other end is connected to the lower part of the middle pole 2.
An elevating pulley 10 is provided at the upper part of the middle pole 2, and an upper pole elevating wire rope 8 is wound around the elevating pulley 10, and one end thereof is attached to a pole support portion 15 at the base of the lower pole 1. The other end is connected to the lower part of the upper pole 1.

Further, a tilt pulley 12 is provided at the front and rear of the upper part of the lower pole 1, and a tilt pulley 13 is provided at the front and rear of the lower part of the middle pole 2, and the tilt pulleys 12 and 13 are respectively provided with a tilt wire rope. 14, one end is connected to the pulley 11 for tilting operation, and the other end is connected to the front and rear of the support shaft 31 of the camera fixing unit 9, respectively.
When photographing using this camera pedestal, the photographer first adjusts the level of the carrier 22 with the level adjustment mechanism 16, the pole support portion 15 pivots horizontally, and the telescopic pole 30 moves vertically. Make it stretchable.

  When changing the height of the camera 18, the elevating handle 20 is manually raised and lowered. An intermediate pole elevating wire rope 7 is wound around an elevating pulley 6 on the upper part of the lower pole 1, one end is connected to the constant load spring 5, and the other end is connected to the lower part of the intermediate pole 2, and the upper stage A pole raising / lowering wire rope 8 is wound around a raising / lowering pulley 10 on the upper part of the middle pole 2, one end is connected to the pole support part 15 of the base part of the lower pole 1, and the other end is connected to the lower part of the upper pole 1. Therefore, the camera 18 moves up and down by a distance twice the moving distance of the lifting handle 20.

  Gravity acting on the camera 18, the camera fixing unit 9, and the upper pole 3 is applied to the upper pole elevating wire rope 8, and the tension is supported by the elevating pulley 10. The tension of the upper pole lifting wire rope 8 supported by the lifting pulley 10 and the gravity acting on the middle pole 2 including the lifting handle 20 are applied to the middle pole lifting wire rope 7, but this force is offset. As described above, since a constant tension is always applied to the middle pole lifting wire rope 7 by the constant load spring 5, a large force is not required to expand and contract the telescopic pole 30.

Since the camera monitor 24 is provided on the lower pole 1, it is possible to easily confirm the image being taken even when the camera 18 is moved to a high place.
When changing the direction of the camera 18, the lifting handle 20 is manually turned.
Since the telescopic pole 30 is swung together with the pole support portion 15 by the swivel mechanism 23, the camera 18 is swiveled horizontally by the swivel angle of the lifting handle 20.

When changing the tilt angle of the camera 18, the tilt handle 21 is manually operated, and the tilt operation pulley 11 is rotated by the tilt operation shaft 19.
Since the tilt wire rope 14 is wound around the tilt pulleys 12 and 13, one end is connected to the tilt operation pulley 11, and the other end is connected to the front and rear of the support shaft 31 of the camera fixing portion 9. When the tilt operation pulley 11 is rotated, the tilt angle of the camera 18 changes.

For example, when the tilt operation shaft 19 is rotated clockwise in FIG. 2, the tilt wire rope 14 connected to the rear side of the support shaft 31 of the camera fixing portion 9 is pulled, and the rear side of the camera fixing portion 9 is Since the camera 18 tilts downward, the camera 18 faces upward.
At this time, the tilt wire rope 14 connected to the front side of the support shaft 31 of the camera fixing unit 9 is sent out by the rotation of the tilt operation pulley 11, so that the front side of the camera fixing unit 9 can follow up.

When the tilt operation shaft 19 is rotated counterclockwise in FIG. 2, the tilt wire rope 14 connected to the front side of the support shaft 31 of the camera fixing portion 9 is pulled, and the front side of the camera fixing portion 9 is lowered. The camera 18 faces downward.
Further, when the telescopic pole 30 is contracted from the extended state shown in FIG. 1 to the contracted state shown in FIG. 4, the distance from the camera fixing unit 9 to the tilt pulley 13 provided at the lower part of the middle pole 2 is equal to the moving distance. Although the distance decreases, the distance from the tilt pulley 13 to the tilt pulley 12 provided on the upper portion of the lower pole 1 increases, so that the tilt wire rope 14 does not loosen. Accordingly, the tilt angle of the camera can be changed by operating the tilt handle 21 in the reduced state as in the extended state.

The camera pedestal can be moved horizontally by the moving device 43 provided with the caster 17 on the carrier 22, so that the camera 18 can be moved horizontally to an arbitrary shooting position.
In this camera pedestal, since the tilt wire rope 14 is directly connected to the camera fixing portion 9, as shown in FIGS. 6 and 7, the upper pole 3 and the tilt wire rope are increased as the tilt angle increases. The distance between the tilt wire rope 14 and the tilt wire rope 14 is increased by a tilt angle change amount Δθ with respect to the vertical movement amount h.

That is, as the tilt angle increases, the amount of operation of the tilt handle 21 and the amount of change in the tilt angle of the camera 18 are not proportional.
Also, as shown in FIGS. 8 and 9, since the center of gravity G of the camera 18 is away from the support shaft 31, a large operating force is required to return the camera 18 to the horizontal when the tilt angle θ increases.
In order to equalize the operating force, a counterweight 33 is provided on the tilt handle 21 as shown in FIG. 10, or a spring 35 is provided before and after the support shaft 31 of the camera fixing portion 9 as shown in FIG. Although it is conceivable to provide the balance mechanism 34, the provision of the counterweight 33 increases the overall mass, and the provision of the balance mechanism 34 increases the mass around the camera 18 to increase the pulling force of the constant load spring 5. Is required.

Therefore, in order to cope with these points, it is preferable to adopt a configuration as shown in FIGS.
Here, a camera tilt pulley 32 having the same diameter as that of the tilt operation pulley 11 is fixed to the camera fixing portion 9 so as to be rotatable about the support shaft 31, and one end of the front and rear tilt wire ropes 14 is connected to the tilt operation pulley 11. The other end of the tilt wire rope 14 is connected to the upper part of the camera tilt pulley 32 in a state where the camera 18 is horizontal.

Further, the camera fixing portion 9 is refracted to the lower right side, and the camera 18 is fixed at a position where the center of gravity G is on the axis of the support shaft 31 on the right side of the upper pole 3.
With this configuration, since the tilt operation pulley 11 and the camera tilt pulley 32 have the same diameter, the rotation angle of the tilt operation pulley 11 and the tilt angle of the camera 18 become equal, and the tilt angle changes. However, since the distance between the upper pole 3 and the tilting wire rope 14 does not change, the load applied to the tilting wire rope 14 is constant regardless of the tilt angle of the camera 18 and the operability is improved.

Further, since the camera 18 is fixed to the camera fixing portion 9 at a position where the center of gravity G is on the axis of the support shaft 31, the operating force of the tilt handle 21 is constant even if the tilt angle of the camera 18 changes. There is no need to provide the counterweight 33, the balance mechanism 34, etc., and the weight can be reduced.
In this camera pedestal, four casters 17 are provided. However, since the casters 17 are supported by the moving device 43 so as to be freely turnable, as shown in FIG. 15, the casters 17 are not aligned. When the movement is started from, the direction of each caster 17 advances in a direction different from the photographer's intention until the direction of each caster 17 is aligned with the direction intended by the photographer.

Therefore, when shooting while moving, it may not be possible to take a picture as intended by the photographer.
In such a case, as shown in FIGS. 16 to 18, it is preferable to use a moving device 41 that lays a track 38 in accordance with a moving route intended by the photographer and includes a track running wheel 37.
A moving device mounting bracket 42 is fixed to the carrier 22 of the camera pedestal shown in FIG. 16 in the same manner as that shown in FIG. The moving device 41 has an adapter 33 fixed to the two moving device mounting brackets 42 using the handle 39 of the level adjusting mechanism 16 and a male screw at the lower portion, and can be rotated at the front and rear end portions of the adapter 33. A vertical support shaft 34 attached to the support shaft 34, a wheel stay 35 having a female screw threadably engaged with the male screw of the support shaft 34, and a wheel stay 35 threadedly engaged with the male screw of the support shaft 34 by a female screw are locked. A lock handle 36, a height adjustment handle 40 attached to the upper end of the support shaft 34, and a track traveling wheel 37 attached to the front and rear ends of the wheel stay 35 are configured.

  When photographing using this camera pedestal, the photographer first lays the track 38 in accordance with the movement path intended by the photographer and places the camera pedestal on the track 38. Next, in order to align the height of the wheel stay 35, the height adjustment handle 40 is gripped, the lock handle 36 is rotated counterclockwise in plan view, and the male screw at the bottom of the support shaft 34 is moved with respect to the wheel stay 35. Let it be in a rotatable state.

  Then, when the height of the wheel stay 35 is lowered, the height adjustment handle 40 is rotated counterclockwise in plan view, and when the height of the wheel stay 35 is increased, the height adjustment handle 40 is seen in plan view. Rotate clockwise to align the height of the four wheel stays 35. Thereafter, the height adjustment handle 40 is grasped, and the lock handle 36 is rotated clockwise in plan view to fix the support shaft 34 and the wheel stay 35.

When the camera pedestal travels on the track 38, each wheel stay 35 rotates around the support shaft 34 according to the direction of the track 38 and changes direction, so that the carrier 22 follows a predetermined path along the track 38. Move accurately.
Therefore, when shooting while moving, it is possible to take a picture as intended by the photographer.

  In this camera pedestal, a moving device mounting bracket 42 similar to that shown in FIG. 1 is fixed to the carrier 22 in all directions, so that the moving device 41 and the moving device 43 provided with casters can be used as necessary. If exchanged, it can be used on the floor outside the orbit.

  The camera pedestal of the present invention is easy to operate, can shoot from a high place safely even in a narrow place, and is lightweight and inexpensive.

Claims (13)

A horizontally movable carrier, a pole support portion supported on the carrier so as to be horizontally rotatable, a lower pole, a middle pole, and an upper pole that are erected on the pole support portion with the pivot center of the pole support as an axis. Telescopic pole, telescopic means for expanding and contracting the telescopic pole, camera fixing unit supported on the upper stage pole so as to be swingable with a support shaft perpendicular to the axis, and the lower pole with respect to the axis It is hung around a tilt operation means that is rotatably mounted on a vertical tilt operation shaft, a tilt pulley provided on the upper part of the lower pole, and a tilt pulley provided on the lower part of the middle pole, and one end is used as the tilt operation means. A camera pedestal comprising: a front and rear tilt wire rope coupled to each other and the other end coupled to the front and rear of the support shaft of the camera fixing portion. The expansion / contraction means is hung on a middle load pole, an upper pole, and a constant load spring for offsetting the load of the camera provided at the base of the lower pole, and an elevating pulley provided on the upper part of the lower pole. It is connected to a constant load spring, and the other end is hung on a middle pole lifting wire rope connected to the lower part of the middle pole and a lifting pulley provided on the upper part of the middle pole, and one end is connected to the base of the lower pole. The camera pedestal according to claim 1, further comprising: an upper pole lifting wire rope having the other end connected to a lower portion of the upper pole. One end of the front and rear tilt wire ropes is connected to a tilt operation pulley provided in the tilt operation means, and a camera tilt pulley of the same diameter as the tilt operation pulley is fixed to the camera fixing portion so as to be rotatable about a support shaft. The camera pedestal according to claim 1 or 2, wherein the other end of the tilt wire rope is connected to an upper portion of the camera tilt pulley in a state where the camera is horizontal. The camera pedestal according to claim 1 or 2, wherein the camera fixing portion has a structure capable of fixing the camera at a position where the center of gravity is on the axis of the support shaft. The camera pedestal according to claim 3, wherein the camera fixing portion has a structure in which the camera can be fixed at a position where the center of gravity is on the axis of the support shaft. The camera pedestal according to claim 1, wherein the carrier includes a caster in the moving device. The camera pedestal according to claim 3, wherein the carrier includes a caster in the moving device. The camera pedestal according to claim 4, wherein the carrier includes a caster in the moving device. The camera pedestal according to claim 5, wherein the carrier includes a caster in the moving device. The camera pedestal according to claim 1, wherein the carrier includes a track running wheel in the moving device. The camera pedestal according to claim 3, wherein the carrier is provided with orbital running wheels on the moving device. The pedestal for a camera according to claim 4, wherein the carrier is provided with orbital running wheels on the moving device. The pedestal for a camera according to claim 5, wherein the carrier is provided with orbital running wheels on the moving device.

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