JP4226809B2 - lighting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting head folding type lighting fixture that is suitably attached to a desk shelf or the like.
[0002]
[Prior art]
Some lighting fixtures attached to a desk shelf or the like are such that an illumination head equipped with a light source such as a fluorescent lamp is foldable. When the lighting head is folded, the lighting fixtures are compactly assembled, and when the lighting head is expanded, a wide range can be illuminated. Moreover, it can suppress that reflected light enters into eyes.
[0003]
FIG. 8 is a perspective view showing such a conventional lighting fixture 100 of a folding type lighting head. A rigid rod 102 is fixed to the upper portion of the support column 101 in a state of extending left and right. Illumination heads 103a and 103b are rotatably attached to the respective tip portions of the rod 102. The support column 101 is fixed to a table top.
By turning the illumination heads 103a and 103b by hand around the rotation shaft 104, the illumination head can be folded or expanded (in FIG. 8, the illumination head is expanded to 90 °). Can do).
[0004]
[Problems to be solved by the invention]
However, in the lighting fixture 100 having the above structure, since the lighting heads 103a and 103b are attached to the tip portions of the rod 102, an excessive load is applied to the rod 102. Therefore, the rod 102 must be made of metal and thick. In other words, there is a problem that the entire lighting fixture 100 becomes heavy and the structure of the lighting fixture 100 becomes complicated.
[0005]
Moreover, in the lighting fixture 100 of the said structure, there exists a problem that the illumination intensity of a center part cannot fully be obtained unless the illumination head 103a, b is expanded to 90 degrees.
Therefore, an object of the present invention is to realize a lighting fixture having a sufficient light intensity at the center, a rod not required, and a light and simple structure as a whole.
[0006]
[Means for Solving the Problems and Effects of the Invention]
The present invention relates to a luminaire of the lighting head foldable attached to shelves desk mounting portion is provided for attachment to the top surface of the desk shelf on the upper surface, provided with a lighting circuit board inside a central body portion which are said being secured to the central body portion, and has a longitudinal laterally horizontally, a connecting fitting hole through which the boss on the left and right sides are provided, and the lighting head at one end and two illumination head having a boss portion formed integrally with the boss portion of the two illumination heads, respectively, is through the left and right sides of the hole of the connecting fitting, the two illumination heads the It is attached so as to extend to the left and right sides from the central main body , and is rotatable in a horizontal plane and within a certain angle range with respect to the central main body, and the two illumination heads Straight from side to side in the center And Vita state, a luminaire of the lighting head foldable shelf plate desk, characterized in that connecting part is displaceable in a state which is bent forward at the center of said central body portion.
[0007]
According to the arrangement, it is possible to lightly simple and compact structure as a whole.
[0009]
A stopper for regulating the angular range in which the illumination head is pivoted relative to the central body portion may be formed on the illumination head and the central body portion (claim 2). By forming a stopper for restricting the angle range of the illumination head on the illumination head and the central main body, the entire structure can be made simple .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view of the luminaire 1 of the present invention as viewed obliquely from the front.
The luminaire 1 includes a central main body 2 having a built-in lighting circuit board, and illumination heads 3a and 3b that are attached to the central main body 2 so as to be rotatable from side to side. On the upper surface of the central body portion 2, there is provided an attachment portion 5 for attaching the luminaire 1 to the top surface of the shelf of the desk. In FIG. 1, the broken line shows a state in which the lighting heads 3a and 3b are bent all the way to the front.
[0012]
FIG. 2 is a perspective view of the luminaire 1 as seen from an oblique front with the bottom surface of the luminaire 1 facing up. Fluorescent lamps 4a and 4b, which are illumination light sources, are mounted in the illumination heads 3a and 3b. In addition, the bottom surface of the central main body 2 is covered with a protective cover 21. In FIG. 2, the broken line shows a state where the lighting heads 3a and 3b are bent all the way to the front.
FIG. 3 is an exploded perspective view of the lighting fixture 1. In FIG. 3, the connection structure between the central main body 2 and the illumination head 3b on one side is drawn as a center. However, the connection structure between the central main body 2 and the illumination head 3a (not shown) has the same structure. Of the illustrated ones, the illumination head 3b, the central body 2, the protective cover 21, and the louver 33 are made of resin such as acrylic. The connecting fitting 22 fixed to the central body 2 and the mounting plate 32 fixed to the lighting head 3b are made of metal such as iron.
[0013]
A cylindrical boss 31 is formed at the rotation center of the illumination head 3b. The boss 31 and the lighting head 3b are integrally formed of resin. A screw hole is formed in the bottom surface of the boss portion 31.
The connection fitting 22 is a “connection member”, and is fixed to the central main body 2 with screws through a plurality of bosses formed in the central main body 2. The connection fitting 22 is provided with a hole 23 through which the boss portion 31 passes.
[0014]
The connecting fitting 22 is fixed to the central body 2, the boss 31 is passed through the hole 23, and a resin washer 34, a metal washer 35, a cylindrical spacer 36 (made of resin), and a metal washer 37 are passed in order. By tightening with the screw 38, the connection between the central main body 2 and the lighting head 3b is realized. A portion having this connection structure is referred to as a “movable connection portion”.
A sectional view of the movable connecting portion 30 is shown in FIG. When the illumination head 3b is rotated by hand, only the connecting fitting 22 fixed to the central body 2 remains stationary, and the other boss part 31, resin washer 34, metal washer 35, spacer 36, metal washer. 37 and the screw 38 rotate integrally with the illumination head 3b.
[0015]
If the tightening torque of the screw 38 is too strong, a strong force is required to rotate the illumination head 3b. If the tightening torque of the screw 38 is too weak, the illumination head 3b is easily rotated and becomes unstable. . Therefore, the tightening torque of the screw 38 must be set so that the turning force of the lighting head 3b is appropriate.
FIG. 5 is a bottom view of the luminaire 1 with the protective cover 21, the mounting plate 32, the fluorescent lamps 4a and 4b, and the louver 33 removed. A lighting circuit board 24 attached to the central body 2 is shown.
[0016]
For example, bowl-shaped guide portions 41 and 43 are formed at the end of the illumination head 3b near the movable connecting portion 30. The guide portions 41 and 43 are formed integrally with the lighting head 3b.
A stopper 42 is formed at the proximal end of the guide portion 41. When this stopper 42 hits the stopper 25 formed on the end surface of the central main body 2, the rotation angle in one direction of the illumination head 3b is restricted. In FIG. 5, the margin of the rotation angle in one direction of the illumination head 3b is indicated by θ1.
[0017]
A stopper 44 is formed at the base end of the guide portion 43. When the stopper 44 hits the stopper 26 formed on the end surface of the central body 2, the rotation angle of the illumination head 3 b in the other direction is restricted. The margin of the rotation angle in the other direction of the illumination head 3b is indicated by θ2.
When θ1 = 0 and θ2 = maximum value, the lighting head 3b is in a state of extending straight in the lateral direction, and when θ1 = maximum value and θ2 = 0, the lighting head 3b is in a state of being bent at the maximum angle in the front direction. Become.
[0018]
Since the lighting fixture 1 is configured as described above, the user can bend the lighting heads 3a and 3b to an arbitrary angle within a range of a fixed rotation angle.
FIG. 6 is a perspective view showing a state in which the lighting fixture 1 is attached to the ceiling plate 6 of the desk shelf. In FIG. 6, the lighting heads 3 a and 3 b are bent forward with the folding top plate 7 opened horizontally. Therefore, the front part of the folding top plate 7 can be illuminated with sufficient illuminance. Further, if the lighting heads 3a and 3b are straightly extended and stored in the space under the ceiling board 6, the folding top board 7 can be completely folded on the shelf board.
[0019]
Therefore, it is optimal if the lighting apparatus 1 of the present invention is used for a desk having the folding top plate 7. Of course, it can also be used for non-foldable desks.
FIG. 7 is a perspective view showing a state in which the arm 8 is attached to the luminaire 1 of the present invention and the arm 8 is attached to the upper portion of the support 9. The support column 9 can be adjusted in height, the arm 8 can be rotated with respect to the support column 9, and the lighting device 1 can be rotated with respect to the arm 8. Thereby, the lighting fixture 1 can be moved up and down on a desk, and the illumination intensity of the top plate 10 of a desk can be adjusted. In addition, as shown in FIG. 6, the lighting heads 3a and 3b can be bent and extended.
[0020]
Although the embodiments of the present invention have been described above, the embodiments of the present invention are not limited to the above-described embodiments. For example, the structure of the movable connecting portion 30 is not limited to that shown in FIG. 4, a through hole is formed in the boss portion 31, a bolt is passed from the upper portion of the illumination head 3 b, and a nut is provided at the lower portion of the washer 37 and screwed. It may be a structure. In addition, various modifications can be made within the scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a perspective view of a luminaire 1 according to the present invention as viewed obliquely from the front.
FIG. 2 is a perspective view of the luminaire 1 as seen obliquely from the front with the bottom surface of the luminaire 1 facing up.
FIG. 3 is an exploded perspective view of the luminaire 1. FIG.
4 is a view showing a cross-sectional structure of a movable connecting portion 30. FIG.
5 is a bottom view of the luminaire 1 with the protective cover 21, the mounting plate 32, the fluorescent lamps 4a and 4b, and the louver 33 removed. FIG.
FIG. 6 is a perspective view showing a state in which the lighting apparatus 1 is attached to a ceiling plate 6 of a desk shelf.
7 is a perspective view showing a state in which an arm 8 is attached to the lighting fixture 1 of the present invention, and the arm 8 is attached to the upper part of a column 9. FIG.
FIG. 8 is a perspective view showing a conventional lighting fixture 100 of a conventional lighting head folding type.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Central main-body part 3a, 3b Lighting head 4a, 4b Fluorescent lamp 5 Mounting part 6 Ceiling board of a shelf 7 Desk top board 8 Arm 9 Support | pillar 10 Desk top board 22 Connecting bracket 23 Connecting bracket hole 24 Lighting Circuit board 25 Stopper 26 Stopper 30 Movable connecting portion 31 Boss portion 34 Resin washer 34
35 Metal washer 36 Spacer 37 Metal washer 41 Wedge-shaped guide portion 42 Stopper 43 Wedge-shaped guide portion 44 Stopper

Claims (2)

An attachment part for attaching to the top surface of the shelf of the desk is provided on the upper surface, and a central body part provided with a lighting circuit board inside ,
Wherein is fixed to the central body portion, and has a longitudinal horizontally laterally, a connecting fitting hole through which the boss on the left and right sides are provided,
Two lighting heads having a boss formed integrally with the lighting head at one end ;
Each boss of the two illumination heads, respectively, is through the left and right sides of the hole of the connecting fitting, the two illumination head is attached as extending out to the left and right sides from the central body portion, the central It is rotatable within a horizontal plane and within a certain angle range with respect to the main body,
The two illumination heads are displaceable between a state in which the two illumination heads extend linearly from side to side with respect to the central body portion and a state in which the illumination head is bent forward with respect to a connecting portion with the central body portion. Lighting head folding lighting fixture for desk shelf .   The lighting fixture according to claim 1, wherein a stopper for restricting an angle range in which the lighting head rotates with respect to the central main body is formed on the lighting head and the central main body.

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