JP2000067636A - Lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly and sufficiently illuminate the working space by swingably mounting a plurality of arms of a mount base through the joint parts to form a lighting tool supporting member, moving the position of the lighting fixture fore and aft, and let and right, and adjusting the angles of the upper and lower parts. SOLUTION: A vertical shaft 3 is turnably inserted into a round hole part 2 formed on an upper part of a mount base 1 on a desk surface, and an upper end of the vertical shaft 3 is connected to a lower end of a first arm through a fist joint part 4. An upper end of the first arm 5 is swung fore and aft around a horizontal axis. A second arm 7 is connected to the upper end of the first arm 5 through a second joint part 6, and a third arm 9 is connected to a front end of the second arm 7 through a third joint part 8. The third arm 9 is swung left and right by the third joint part. A fourth joint part 10 is formed on the other end of the third arm 9, and connected to a lighting fixture supporting member. The lighting fixture supporting member 11 is swung around an axis. Further the lighting fixture supporting member 11 is swung up and down by a fifth joint part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device,
The present invention relates to a lighting device that can effectively illuminate the desk top surface when a personal computer is installed on a learning desk with an upper shelf.

[0002]

2. Description of the Related Art Conventionally, a lighting apparatus using a straight tube fluorescent lamp is usually attached to a learning desk with an upper shelf.

[0003]

Some of such lighting fixtures are fixed to the bottom of a shelf plate and have a function of sliding toward the front. Therefore, the original function of illuminating the desk surface cannot be performed. If these fixed under-the-shelf lighting fixtures are in the way and the PC cannot be installed, remove the upper shelf and install the PC without the fixed under-shelf lighting fixtures. It was necessary to purchase a new one that suits the situation. In some cases, stand-type lighting fixtures are installed on the upper shelf.However, it is not possible to install a personal computer, or even if it can be installed, the top of the personal computer will be illuminated and the top of the desk in front of it Can not be illuminated.

[0004] The present invention has been made in view of the above-described problems of the conventional technology, and can effectively illuminate the desk surface even when equipment such as a personal computer is installed on the desk. It is an object of the present invention to provide a lighting device for a desk with an upper shelf.

[0005]

According to the present invention, the above-mentioned problem is solved as follows. (1) An attachment base attached to a desk or the like, a first arm supported on the attachment base so as to swing forward and backward, and attached to an upper end of the first arm so as to swing up and down toward the front. A second arm, a third arm attached to a front end of the second arm so as to swing left and right, and a third arm.
A lamp support member attached to the other end of the arm so as to be able to swing right and left, and a lamp attached to the tip of the lamp support member. Make it mobile.

(2) In the above item (1), the lamp support member can be swung up and down at the front and rear portions thereof.

(3) In the above item (1) or (2), the lamp is a straight tube type fluorescent lamp, which is mounted around a vertical axis so as to be rotatable about the axis of the lamp supporting member.

(4) In any one of the above items (1) to (3), the lower end of the first arm is mounted on the mounting base so as to be rotatable around a vertical axis.

[0009]

1 to 3 show an embodiment of a lighting device according to the present invention. This lighting device is of a type in which a straight tube-type fluorescent lamp is attached to a rear edge of a top plate in a stand manner.

A vertical round hole forming portion (2) is provided above the mounting base (1) on the desk surface, where a vertical shaft (3) is provided.
Are rotatably inserted around the vertical axis (A) (FIG. 2) as shown by the arrow (a) (FIG. 3). Vertical axis
The upper end of (3) is connected to the first arm via the first joint (4).
It is connected to the lower end of (5).

The first arm (4) is a member extending upward. The upper end of the first arm (4) is moved horizontally by the first joint (4).
As shown by the arrow (b), the head can be swung back and forth around the center (B). Reference numeral (4a) denotes an adjustment knob for adjusting the tightening of the first joint (4).

At the upper end of the first arm (5), a second joint is provided.
A (6) is formed, which is connected via a second joint (6) to a relatively short second arm (7) extending forward. Therefore, the second arm (7) is
According to (6), it is possible to swing up and down about the horizontal axis (C) as shown by the arrow (c). Reference numeral (6a) is an adjustment knob for adjusting the tightening of the second joint (6).

A third joint is provided at the front end of the second arm (7).
(8) is formed, and the second arm (7) is connected to the third joint part.
It is connected to the third arm (9) via (8). The third arm (9) can be swung right and left about the axis (D) by the third joint (8) as shown by an arrow (d). Reference numeral (8a) is an adjustment knob for adjusting the tightening of the third joint (8).

The other end of the third arm (9) has a fourth joint (1).
0) is formed, and the third arm (9) is connected to the lamp supporting member (11) via the fourth joint (10). The lamp support member (11) can be swung right and left about the axis (E) by the fourth joint (10) as shown by an arrow (e). The fourth joint (10) is also provided with an adjustment knob (not shown) for adjusting the tightening.

The lamp support member (11) has a front part horizontal to the rear part by a fifth joint part (12) provided in the middle.
It is possible to swing up and down around (F) as shown by the arrow (f). Reference numeral (12a) is an adjustment knob for adjusting the tightening of the fifth joint (12).

The front portion of the lamp support member (11) is connected to the lamp (14) via a rotating shaft (13). As a result, lamps (14)
Can rotate about the axis (G) as shown by an arrow (g) (to draw a circle when viewed from the front). The lamp (14) is of a type in which a straight tube type fluorescent lamp is housed in a shade.

1 and 2 show a mounting base.
(1) is a method in which the upper and lower surfaces of the top plate are sandwiched and fixed by a screw-type mounting means (15). The mounting means (15) is removed, and a screw is attached to the mounting base (16) shown in FIG. It can be stored in the middle of the lower shelf (16) of the learning desk with the upper shelf as shown in FIG. At this time, the second arm (7) is in a substantially horizontal state, the third arm (9) is in a state of extending in the left-right direction, and the lamp (14) is on the shelf (18) of the upper shelf (17). Housed below.

As shown in FIG. 6, when installing equipment such as a personal computer, the upper shelf (17) is removed, and the shelf (20) is removed from the lower shelf (19). The personal computer (21) is placed. Adjustment of the lighting device is performed by adjusting the adjustment knobs, tilting the first arm (5) forward, adjusting the angle between the first arm (5) and the second arm (7), and adjusting the angle of the second arm. (7) should be horizontal. At this time, light (1
4) is located above the personal computer (21). Then, the third arm 9 is rotated horizontally to adjust the lamp 14 so as to illuminate the work space in front of the personal computer 21 or on the top surface. Furthermore, by adjusting the vertical angle of the lamp support member (11) and the rotation of the lamp (14), the shadow of the personal computer itself is reduced on the work surface, and the space for the keyboard and mouse, and the work space, is reduced. Make sure to illuminate enough.

Although not shown, the upper shelf (17) and the lower shelf (19)
If both are removed, attach the mounting base (16) to the mounting means (1
Instead of 5), the lighting device is directly fixed to the top plate by the mounting means (15).

[0020]

According to the first aspect of the present invention, when a device such as a personal computer is installed on a tabletop of a desk, the angle of each joint or rotating part is adjusted so that the position of the lamp can be adjusted in front, rear, left and right. By moving the camera and adjusting the vertical angle, it is possible to uniformly and sufficiently illuminate the space of the keyboard and mouse and the work space without causing a shadow of the personal computer on the work surface. In the case where a personal computer or the like is not installed, the lighting device is placed under the shelf of the upper shelf as in the related art.

If the lamp support member can be swung around its front and rear portions as in the second aspect of the invention, it is possible to finely adjust the illumination of the desk surface.

According to the third aspect of the present invention, when the lamp is a straight tube type fluorescent lamp and is mounted so as to be rotatable about the axis of the lamp supporting member, the difference between the left and right brightness on the desk surface is obtained. Can be adjusted.

When the lower end of the first arm is rotatably mounted on the mounting base as in the invention described in claim 4, it is possible to adjust the horizontal direction of the entire lighting device.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is also a perspective view.

FIG. 3 is an explanatory view showing a movable state of each part of the lighting device.

FIG. 4 is a partially exploded perspective view showing a situation where the mounting base of the lighting device is mounted on the mounting base.

FIG. 5 is a perspective view of a learning desk with an upper shelf to which a lighting device is attached.

FIG. 6 is a perspective view showing a situation in which a desktop personal computer is installed on the study desk.

[Explanation of symbols]

 (1) Mounting base (2) Round hole (3) Vertical axis (4) First joint (4a) Adjustment knob (5) First arm (6) Second joint (6a) Adjustment knob (7) No. 2 arm (8) 3rd joint (8a) Adjustment knob (9) 3rd arm (10) 4th joint (11) Lamp support member (12) 5th joint (12a) Adjustment knob (13) Rotation Shaft (14) Lighting (15) Mounting means (16) Mounting base (17) Upper shelf (18) Shelf (19) Lower shelf (20) Shelf (21) Desktop PC

Claims (4)

[Claims] 1. A mounting base to be attached to a desk or the like, a first arm supported by the mounting base so as to be able to swing forward and backward, and an upper end of the first arm being swingable up and down toward the front. A second arm attached to the second arm, a third arm attached to the front end of the second arm so as to swing left and right, and a lamp attached to the other end of the third arm so as to swing left and right. A lighting device comprising: a support member; and a lamp attached to a tip of the lamp support member, wherein the lamp can move forward, backward, left, and right on a surface on which the second arm extends. 2. The lighting device according to claim 1, wherein the lamp support member can swing up and down at front and rear portions thereof. 3. The lighting device according to claim 1, wherein the lamp is a straight tube-type fluorescent lamp, and the lamp is rotatably mounted around an axis of the lamp support member. 4. The lighting device according to claim 1, wherein a lower end of the first arm is mounted on the mounting base so as to be rotatable around a vertical axis.