JPH0973809A - Universal arm stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow the arrangement of a lighting fixture at all places within the range on a desk top, and provide both adjusting and space saving functions by laying a first to a third arms, and keeping the third arm always movable in parallel to a mounting plane such as a desk. SOLUTION: A first arm 23 is held on a part of a mounting surface such as a desk, so as to be capable of freely turning, and a second arm 24 has one end coupled to the end of the first arm 23 at the preset gap, so as to be capable of freely turning in a vertical direction. Shaft holders 26 and 27 are provided on the tip of the other end of the arm 24, and a joint member 28 is laid for connecting the holders 26 and 27 to each other. Furthermore, a third arm 29 is fixed to the joint member 28. The arms 23, 24 and 29 are thereby made capable of performing a limited motion only within a movable range on a desk top plane, thereby enabling a lighting fixture 32 to be positioned at all places within the range of the whole of the desk top plane. In this case, the arm 24 formed out of a plurality of arms at the preset intervals can always move in a vertical direction concurrently as well as in parallel, and the arm 29 can always move horizontally, relative to the desk top plane in any moving direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a free-standing arm stand attached to a desk or the like for use.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional free-form arm stand, for example, as shown in Japanese Utility Model Laid-Open No. 62-124710. In the figure, 1 is an arm supporting portion fixed to a desk D, and 2 is a tube portion 1 a of the arm supporting portion 1.
It is an arm that is rotatably raised by inserting the shaft portion 3a at the lower end into the arm. In this arm 2, the first arm 3 and the second arm 4 are the first joint portion 7, the second arm 4 and the third arm 5 are the second joint portion 8, and the third arm 5 and the fourth arm 6 are the first joint portion 7. The three joints 9 are connected so as to be bendable.

The shaft portion 3a at the lower end of the arm 2 described above is provided on the first arm 3. Reference numeral 10 denotes a tip of the arm 2, that is, a shade rotatably attached to the fourth arm 6,
7 and 8 are a light bulb and a socket installed in the set 10.

Since the conventional free-form arm stand has the above-mentioned structure, when the work is performed on the desk top, the first to the first to place the lamp at the desired position on the desk top. The second arm to the sixth arm are expanded and contracted by three joints to be used for position adjustment.

[0005]

In the conventional structure constructed as described above, when the second arm to the sixth arm are used, they are bent to irradiate light to the back surface and left and right of the desk. In this case, the second to sixth arms largely jump out of the desk when viewed in plan.

Therefore, it is necessary to secure a sufficient space for the arms to move freely on the left and right sides of the desk and on the inner surface thereof, which is a limitation in use.

Further, when working on a desk, the position of the lamp once set, especially the irradiation direction of the light source, etc., is temporarily moved to avoid it for another work, and the lamp is returned to the original work again. May be returned to the initial position.In such a case, the lamp cannot be used unless it is readjusted to the initially set lamp position, and it is necessary to adjust the lamp to suit the optimum use condition each time. It was something that was not easy to use.

The present invention has been made to solve the above-mentioned conventional problems, and the lamps are provided at all places on the desk top surface within a limited range of the plane size of the desk top surface. It is an object of the present invention to provide a free-form arm stand that has both the flexibility of being able to position and the space saving.

In addition, the irradiation condition of the lamp once set is temporarily moved for another work, and when returning to the original work, the lamp is returned to the condition originally set without any adjustment. It also has the purpose of providing a free-form arm stand that enables the

[0010]

A freeform arm stand according to the present invention comprises a substantially upright columnar shape, one end of which is rotatably supported by a part of a mounting surface of a desk or the like. A second arm which is composed of one arm and a plurality of arms which are attached to the tip of the first arm and which can swing up and down and are arranged in parallel at a predetermined interval, and the second arm. A shaft holder that is located on the other end side of the shaft holder and that is vertically swingably attached; a connecting member that connects the shaft holders; a third arm that has one end fixed to the connecting member; The lamp is attached to the other end of the arm so as to be swingable.

[0011]

According to the universal arm stand of the present invention having the above-described structure, the first arm is rotatably supported on a part of the mounting surface of a desk or the like, and a predetermined space is provided on the tip side thereof. The second arm is mounted so as to be rotatable in the vertical direction, and each shaft holder provided at the tip portion on the other end side, a connecting member for connecting the shaft holders, and the connecting member portion Due to the fixed third arm, the lamps located at the other end of the third arm on the other end of the third arm are within the range of the entire upper surface of the desk by the limited movement of the first to third arms only on the movable range on the desk plane. Can be located in all places.

The second arm composed of a plurality of arms arranged in parallel at a predetermined interval is
One end is attached to the tip side of the first arm so as to be movable in the vertical direction, and the other end tip portion is fixed to the connecting member that connects the shaft holder so as to be rotatable in the vertical direction. You can move up and down.

Next, since the third arm has one end fixed to the connecting member for connecting the shaft holder so as to extend in the horizontal direction, the third arm can be moved vertically or horizontally to the desk surface. It always moves horizontally against.

[0014]

【Example】

Embodiment 1 An embodiment of the present invention will be described below with reference to FIGS.
In FIG. 1, reference numeral 20 denotes an arm supporting portion, which is composed of a frame portion 20a fixed to a desk 21 with a screw 22, and an arm inserting portion 20b provided so as to project on the upper surface thereof. 23 is
The first arm has a lower end inserted into the arm insertion portion of the arm support portion and is rotatably raised, and has a substantially upright columnar shape. 24 is the above-mentioned first one with one end spaced apart from each other by a predetermined interval.
The second arm is attached to the upper end of the arm so as to be vertically rotatable.

The second arm has a predetermined length, and the other end side tip portion 25 is attached to a shaft holder 26 so as to be rotatable in the vertical direction, and is a connection for connecting these two shaft holders 26, 27. The members 28 are mounted so as to be positioned vertically and maintain a parallel state.

The connecting member is positioned so as to always maintain a vertical state with respect to the vertical movement of the two second arms. Reference numeral 29 is a third arm, which is attached in a manner orthogonal to the substantially central portion of the connecting member that always maintains the water straight state, and extends horizontally from this end portion with a predetermined length.

The second arm and the third configured as described above
The arm functions as a crank by a shaft holder and a connecting member that connect them. 30 is
The third arm is a rotating unit that rotates about the arm shaft at the other end of the third arm, and is configured to have a vertical swing mechanism 31 that is provided in series with the rotating unit.
Reference numeral 32 is a lamp which internally has a light source section and which has a reflection plate on its inner surface so that the light emitted from this light source section is efficiently projected onto the desk top surface.

Reference numeral 33 denotes a horizontal rotating mechanism provided with an upper surface portion of the lamp, which is configured to rotate the lamp in a desired direction, and which is provided with the lamp and the above-mentioned vertical swing mechanism 3 described above.
It is to combine 1 and 1.

Depending on the embodiment configured as described above, when the lamp is moved up, down, left, and right in the range of the desk surface, it moves in conjunction with the movement of the first and second arms. The third arm will always move parallel to the desk surface.

Therefore, the irradiation condition of the lamp set for the working state is that the posture is constant even if the lamp moves up, down, left and right, and even if the lamp is moved during the work, no change adjustment is made. It is possible to maintain the preset horizontal posture of the lamp.

Further, according to this embodiment, not only the lamp but also all the members constituting the free-standing stand including the first to third arms are moved on the same plane as the desk surface, so that the lamp can be mounted on the desk surface. Since it can be moved to any position, it can be used without any problem even if a bookshelf or the like is installed on the back of the desk, or on the left and right sides, for example. Therefore, it has the effect of significantly improving the convenience of the universal surface arm stand.

Second Embodiment In the first embodiment, the second arm 24 is composed of two pipe-shaped arms, but the two arms may have different shapes as shown in FIG. 2, or a wire or the like. The same effect as that of the above-described embodiment can be obtained.

Embodiment 3 Further, in the above embodiment, the light source portion of the lamp may be an incandescent lamp or a fluorescent lamp as shown in FIG. 4, and the same effect as in the above embodiment can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an arm stand according to an embodiment of the present invention.

FIG. 2 is a side view showing a rotation state of the arm stand according to the embodiment of the present invention.

FIG. 3 is a diagram showing a conventional arm stand device.

[Explanation of symbols]

23 1st arm, 24 2nd arm, 25 Tip part 26,27 Shaft holder, 28 Connecting member,
29 Third Arm, 30 Rotating Part, 31 Vertical Swing Mechanism, 32 Lamp, 33 Horizontal Rotating Mechanism,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Takada 5-1-1 Ofuna, Kamakura-shi Mitsubishi Electric Lighting Co., Ltd. (72) Inventor Go Nakamachi 2-2-1 Minatomirai, Nishi-ku, Yokohama Landmark Tower Shares Company Design Operation Twenty-one

Claims (5)

[Claims] 1. A first arm having a substantially upright columnar shape, one end of which is rotatably supported by a part of a mounting surface of a desk or the like.
A plurality of second arms attached to the tip of the first arm and vertically swingable and arranged in parallel at a predetermined interval.
arm. A shaft holder which is located on the other end side of the second arm and is attached so as to be swingable up and down. A connecting member that connects the shaft holders. A third arm having one end fixed to this connecting member. A free-standing arm stand comprising a lamp attached to the other end of the third arm so as to swing freely, and is configured to always move in parallel with a mounting surface of a desk or the like. 2. The second arm and the third arm have a crank structure via a shaft holder connected to the second arm and a connecting member to which the third arm is fixed. Free-form arm stand. 3. The universal arm stand according to claim 1, wherein the second arms arranged in parallel at a predetermined interval have the same sectional shape or different sectional shapes. 4. The tip end portion of the lamp mounting portion of the third arm has both a rotating portion that rotates about the arm shaft and a vertical swinging mechanism that is provided in series with the rotating portion. The universal arm stand according to any one of claims 1 to 3, which is configured. 5. The universal arm stand according to claim 1, wherein a horizontal rotating means is provided on the upper surface of the lamp.