JP2014071967A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device equipped with a task light to illuminate a desktop capable of securing a high degree of freedom in an installation place while maintaining stability and strength.SOLUTION: A lighting device comprises left and right poles 1 having base plates 4 placed on a floor and a wide task light 3. The task light 3 includes a metal-made body 35, which is height-adjustably connected with the left and right poles 1. Since the lighting device is a floor standing type, it can be installed in any place. Moreover, the task light 3 is functioned as a reinforcing member so that high stability and strength can be secured without providing extra reinforcing members, such as a horizontal bar.

Description

  The present invention relates to a lighting device suitable for use in a set with a desk.

  Office lighting is generally done with lamps placed on the ceiling, and a desk lamp is used to illuminate a specific desk. Ceiling lighting is typically very bright, and the power costs for ceiling lighting often account for a significant portion of the office expenses.

  On the other hand, people are accustomed to darkness and lightness, and even if the whole room is somewhat dim, it often does not affect work. Focusing on this point, the applicant of the present application disclosed in Patent Documents 1 and 2 an illuminating device having both an ambient illumination lamp that irradiates light upward and a task light that illuminates the desk surface.

JP 2011-124968 A JP 2012-161407 A

  Since the lighting devices of Patent Documents 1 and 2 are fixed on a desk, the stability is high, but they cannot be installed at any place, and the flexibility regarding the installation place is low.

  The invention of the present application is an extension of the invention of the prior application, and aims to ensure the freedom of installation location while ensuring stability.

  In order to achieve the above object, the present inventor has completed the invention represented by each claim. Among these, the invention of claim 1 includes a left and right support column that is provided with a base body at the lower end and is independent on the floor, and a task light provided with a light emitter that emits light downward on a horizontally long main body, The left and right struts are connected with task lights.

  According to a second aspect of the present invention, in the first aspect, a clamp-type bracket for holding the left and right columns is attached to the left and right columns so that the height can be adjusted, and the task light is fixed to the bracket.

  According to a third aspect of the present invention, in the first or second aspect, the task light main body is formed in a groove shape that opens downward, and a number of LED lamps as the light emitters are disposed in a scattered state in the main body. ing.

  This invention can be installed in arbitrary places by providing the base body in the lower end of a support | pillar. For this reason, task lights can be used as needed and are useful. In addition, since the left and right columns are connected by task lights, the task lights themselves (more precisely, the main body that constitutes the task lights) function as strength members of the lighting device, so a reinforcing horizontal beam is provided. There is no need, and thus strength can be secured without complicating the structure.

  There are various operations on the desk, such as personal computer operation and writing, and various fears and devices are often placed on the desk. In this respect, since the height of the task light can be adjusted according to the brightness required on the desk, the height of the article placed on the desk, and the like, the flexibility is high and suitable. In this case, if the bracket that connects the column and the task light is composed of two parts divided into the front and rear (or left and right), the task light can be attached and removed even if other lamps are attached to the upper end of the column. Therefore, it is particularly suitable.

  The main body constituting the task light can be a simple plate-like structure, but if it is configured in a groove shape that opens downward as in claim 3, it ensures high strength against vertical bending. Since the LED lamp can be disposed inside the groove, there is an advantage that high stability can be secured while preventing the light of the LED lamp from directly touching the human eye. Further, when the task light main body is configured in a groove shape having a downward opening as in claim 3, there is also an advantage that a translucent plate having a light diffusion function or the like can be arranged on the opening edge of the main body.

It is a whole perspective view of a 1st embodiment. It is a separated perspective view of a top bracket, a support | pillar, and a power supply device. (A) is a partial plan view, (B) is a cross-sectional view taken along the line BB of (A), (C) is a cross-sectional view taken along the line CC of (A), and (D) is a cross-sectional view taken along the line D-- FIG. (A) is a plan view of an upward illumination lamp, (B) is a cross-sectional view taken along line BB of (A), (C) is a cross-sectional view taken along line CC of (A), and (D) is D of (A). It is -D view sectional drawing. It is a figure which shows the support structure of a task light, (A) is a partial front view, (B) is BB sectional drawing of (A), (C) is CC sectional drawing of (A). It is a figure which shows the lower part of an illuminating device, (A) is a vertical front view, (B) is a BB view of (A). It is a figure which shows another example of the attachment means of an upward illumination lamp, (A) is a top view, (B) is a separate top view, (C) is CC sectional view taken on the line of (A). It is a front view which shows the usage example of a task light. (A) is a plan view of the second embodiment, (B) is a front view of the second embodiment, (C) is a plan view of the third embodiment, and (D) is a front view of the third embodiment.

(1). Outline of First Embodiment / Upward Illuminating Lamp Next, an embodiment of the present invention will be described with reference to the drawings. First, a first embodiment shown in FIGS. 1 to 6 will be described. The lighting device is a system that is self-supporting on the floor, and is a horizontally long (upper and lower half-height position) that connects the left and right struts 1, the upper lamp 2 provided at the upper end of both or one strut 1, and the left and right struts 1 Horizontal) lower task light 3. The upper lamp 2 includes an upward illumination lamp. In the present embodiment, the lower task light 3 corresponds to the task light described in the claims.

  A base plate 4 is fixed to the lower end of the column 1 and is thus held on the floor in a self-supporting state. The lighting device of the present embodiment can be used as a set with the desk 5 and can be arranged so that the desk 5 is sandwiched from the left and right sides by the left and right columns 1. The base plate 4 enters below the desk 1 and the wagon 6. In the present embodiment, the words “front and rear” and “left and right” are used to specify the direction, which is based on the state of being placed on the desk 5.

  As shown in FIG. 1, the base plate 4 is formed in a U-shape in a plan view that opens in the direction of the opposite struts 1, but it may be a simple rectangle. Further, although the column 1 is erected at the end of the base plate 4, the column 1 can be erected at the center of the base plate 4.

  As shown in FIG. 2, the support column 1 is a hollow extruded product having a substantially square shape, with recesses 7 formed in the front and rear outer surfaces, and grooved protrusions opened in the front and rear in the vicinity of each corner in the interior. Article 8 is formed. The upper lamp 2 is attached to the upper end of the column 1 via the top bracket 9.

  As shown in FIG. 1 and FIG. 4A, the upper lamp 2 includes a main body frame 10 that opens up and down, and the main body frame 10 constitutes the appearance of the upper lamp 2. The main body frame 10 has a rectangular shape that is long in the longitudinal direction (left and right direction) of the desk, and as shown in FIGS. 4B and 4C, it basically has a V-shaped cross section that increases in width as it goes upward. The upper plate 11 is provided near the upper end to form a hollow structure, and the upper portion of the upper plate 11 is an inverted trapezoidal upward opening groove 12. Therefore, the cross section is an inverted A type.

  Moreover, although both the inner peripheral surface 10a and the outer peripheral surface 10b of the main body frame 10 are inclined outward with respect to the vertical line, the inclination of the outer peripheral surface 10b is larger than the inclination of the inner peripheral surface 10a. The main body frame 10 is manufactured by bending a metal extruded product such as aluminum, but can also be manufactured by blow molding using a resin as a material. Use of an extruded metal product has an advantage in strength and heat dissipation.

  Then, as shown in FIG. 4C, a belt-like circuit board 13 is arranged in the upward opening groove 12 in the front and rear long sides of the main body frame 10, and a large number of LED lamps 14 are mounted on the upper surface of the circuit board 13. . Therefore, the upward illumination lamp (ambient illumination) 2 is configured by providing the LED lamp 14 in the upward opening groove 12.

  A step portion 15 is formed on the inner and outer opening edges of the upward opening groove 12, and the translucent plate 16 is overlapped and held on the step portion 15. The step portion 15 is formed over the entire circumference, and the translucent plate 16 is also disposed over the entire circumference. The translucent plate 16 may be a simple transparent plate or a colored plate such as milky white, or may have a light diffusion (scattering) function. The translucent plate 16 is fixed to the main body frame 10 with screws 17.

  As shown in FIG. 2, the top bracket 9 supports a top plate 9 a that overlaps the upper end surface of the column 1, a hollow leg portion 9 b that fits inside the column 1, and one short side portion of the main body frame 10. And a bowl-shaped arm portion 9c. The foot portion 9b is formed in a cross shape so as to escape the grooved ridge 8 of the support column 1, and screws 20 are inserted into the corner portions outside the foot portion 9b of the top plate 9a from above, and the screw 20 is inserted into the support column. 1 is threaded into the grooved ridge 8. In addition, in FIG. 3C, the section of the grooved ridge 8 should be displayed accurately, but the drawing is complicated, so the grooved ridge 8 displays the appearance for convenience. Yes.

  The top bracket 9 has substantially the same front-rear width as the column 1 and supports one short side portion of the main body frame 10 in the upper lamp 2 from below with a hook-shaped arm portion 10c, as shown in FIGS. And the main body frame 10 is being fixed to the bowl-shaped arm part 10c with the screw | thread 21 penetrated from the outer side. In this case, it is also possible to cut the inner part of the main body frame 10 partially, insert a metal backing plate 22 indicated by a one-dot chain line, and screw the screw 21 into the backing plate 22. When the contact plate 22 is used in this way, the fixing strength can be remarkably improved.

  As shown in FIG. 4, the main body frame 10 constituting the upper lamp 2 has a metal stay 23 that extends across the space at the front and rear intermediate positions, and an upper task light 25 is disposed on the lower surface of the stay 23. ing.

  The upper task light 24 includes a case 24a fixed to the lower surface of the stay 23, and the case 24a is fixed to the stay 23 with screws (screws or vist and nuts) 24b. In addition, the circuit board 24c is fixed to the inner bottom surface of the case 24a, and the LED lamps 14 'are mounted on the lower surface of the circuit board 24c. An inward flange 24d is formed at the lower opening edge of the case 24a, and a resin translucent plate 24e is mounted using the inward flange 24d. The case 24a is made of a metal plate such as aluminum, and therefore has excellent heat dissipation (of course, the case can be made of resin). A hole 24f for drawing the cable 31 drawn from the support 1 into the circuit board 24c is opened at the end of the stay 23 near the support 1.

  One end portion 23a near the support column 1 of both ends of the stay 23 is bent obliquely upward, and is fixed to the inner side surface of the short side portion of the main body frame 10 with screws 25 (see FIG. 3C). The other side 23 b opposite to the column 1 is fitted into the upward opening groove 12 on the other short side of the main body frame 10 from above, and is fixed to the main body frame 10 with screws 25. Therefore, the translucent plate 16 is cut off at the end portion 23c.

  The upper task lights 24 can be arranged in, for example, a plurality of rows, in a cross shape, in a circular shape or a polygonal shape in plan view, or in a cantilever shape. The body frame can be set in various cross-sectional shapes such as a circle, a hollow square, a triangle, and an ellipse.

(2). Configuration of power supply device, lower task light, lower end As shown in FIGS. 2 and 3, a power supply device 26 for supplying power to the upper lamp 2 and the lower task light 3 is provided above the inside of the support column 1. Built in. The power supply device 26 includes a substrate 27 fixed in a suspended state on the foot portion 9b of the top bracket 9, a step-down / rectifier circuit portion fixed to one surface of the substrate 27, and a cover plate 28 covering the step-down / rectifier circuit portion. have. The upper end portion of the substrate 27 overlaps the front inner surface of the foot portion 9 b of the top bracket 9, and is fixed to the foot portion 9 b with a countersunk screw 29. Although the cover plate 28 is displayed on the front side in FIG. 3, the cover plate 28 is actually facing backward. When the countersunk screw 29 is inserted into the foot portion 9b from behind, the cover plate 28 is located in the labor.

  A ground terminal 30 is provided below the substrate 27. Alternatively, the two power cables 31 are exposed from the upper end of the cover plate 28, and the power cables 31 pass through the center hole 32 and the wiring groove 33 provided in the top bracket 9 as shown in FIG. 10 circuit boards 13 are drawn out.

  The lower task light 3 has a bowl-shaped main body (case) 35 that opens downward, a belt-like circuit board 36 is fixed to the inner bottom surface of the main body 35, and the LED lamp 37 is jumped to the lower surface of the circuit board 36. Many are installed in the state. A step portion 38 is formed at the front and rear opening edges of the main body 35, and a translucent plate 39 is fitted into the step portion 38 and fixed to the main body 35 with a screw or the like. If the lower task light 3 is at a certain height or higher, light may enter the human eye. Therefore, it is preferable that the translucent plate 39 has a light diffusing function.

  The main body 35 is preferably an extruded product or a sheet metal product using a metal material such as aluminum from the viewpoint of strength. The lower task light 3 may be configured in the same structure as the upper task light 25 of FIG. 4D (in this case, the cost can be reduced by using a member also). The main body 35 can be provided with reinforcing means such as ribs in order to increase the bending strength against the load in the vertical direction.

  A main body 35 of the lower task light 3 is fixed to the column 1 via an intermediate bracket 40. The intermediate bracket 40 corresponds to the bracket described in the claims, and includes a front part 41 that overlaps the front half of the column 1 from the front and a rear part 42 that fits from the back to the rear half of the column 1. By pulling the overhanging portions 43 provided on the left and right sides of each other with screws 44, the intermediate bracket 40 firmly holds (clamps) the column 1 and is thereby held so as not to fall.

  A soft material (rubber) 45 is provided at the corner portion of the intermediate bracket 40 so as to overlap the front surface and the rear surface of the support column 1. For this reason, the intermediate bracket 40 can be reliably prevented from slipping down, and if the screw 44 is loosened to some extent, it can be moved up and down without dropping (therefore, even if the left and right length of the lower task light 3 is long, the height alone is high). Can be adjusted.)

  An inward support portion 46 is formed on the front and rear parts 41 constituting the intermediate bracket 40, and the main body 35 of the lower task light 3 is formed by screws 46b (see FIG. 5B) inserted through the support portion 46 from below. Is fixed via a spacer 47. In this case, by making the screw insertion hole 46a of the support portion 46 a long longitudinal hole, consideration is given so that the fixing of the main body 35 is not hindered even if the front-rear distance between the front and rear parts 41, 42 changes. In addition, it is also possible to use the intermediate bracket 40 in a state where the intermediate bracket 40 is turned upside down. In this case, the spacer 47 is unnecessary.

  A power cable 31 for the lower task light 3 is disposed inside the column 1 and is drawn into the lower task light 3 from a hole provided in an inner plate of the column 1. And, as a means for facilitating the drawing of the cable 31 in a state where the height of the lower task light 3 can be adjusted, for example, the cable drawing hole of the support column 1 is formed into a long and long long hole, or the cable drawing hole is moved up and down. It may be formed in multiple stages. Of course, the cable may be slightly exposed by providing a cable drawing hole above or below the vertical movement area.

  As shown in FIG. 6, two standing portions 48 that overlap the front inner surface and the rear inner surface of the support column 1 are fixed to the base plate 4 that contacts the floor F. The front plate and the rear plate are fixed with screws 48a. In addition, a wiring port 50 is provided at the lower end of the support column 1 to allow the power cable 49 before rectification / step-down to be taken in and out of the support column 1, and a protective edge 51 made of resin is attached to the wiring port 50. Yes.

  The legs 52 constituting the desk 5 are supported by adjuster bolts 53, and the wagon 6 is supported by casters 53. Therefore, there is a gap between the leg 52 of the desk 5 and the floor F in which the base plate 44 enters with a sufficient margin. For this reason, the support | pillar 1 can be arrange | positioned in arbitrary positions. In addition, although the base board 4 of embodiment is long in the left-right direction, it is also possible to use the desk 52 for weight as a form extended long in the front-back direction so that the leg 52 of the desk 5 may rest. Further, the base plate 4 may be fixed to the floor F with a screw type anchor or the like.

  When the base plate 4 is formed in a U-shape as in the embodiment, the base plate 4 can be arranged so as to surround the desk adjuster 53 and the caster 53 of the wagon 5, so that the flexibility of the arrangement position of the lighting device can be further improved. There are advantages.

(3) Summary This embodiment has the above-described configuration, and the lighting device is a system that is self-supporting on the floor F. Therefore, the desk 5 does not require any special processing, and thus can be installed in any place. Excellent flexibility. And since the right and left support | pillar 1 is connected with the main body 35 of the lower task light 3, it can ensure high stability although it is a self-supporting type.

  There are several types of desks 5 with different horizontal widths. By preparing multiple types of lower task lights 3 corresponding to the horizontal widths of the desks, the columns 1 and the upper part are prepared. The lamp 2 can be used for various desks with only one type. When the left and right length of the lower task light 3 is very long, a foot may be provided at the middle portion between the left and right sides to contact the desk surface.

  Since the upper lamp 2 has a frame shape (loop shape) opened up and down, the front-rear distance between the two LED lamps 14 provided on the long side portion can be increased without increasing the plane area of the front end of the main body frame 10. it can. Thereby, the illumination area by the LED lamp 14 can be expanded and illumination efficiency can be improved. Further, since the upper lamp 2 (main body frame 10) has a frame shape opened up and down, the light can be diffracted and wrap around the space. For this reason, it can prevent or suppress that the lower part of the upper lamp 2 becomes a dark shadow.

  If the upper task light 25 is provided in the embodiment as in the present embodiment, the desk top can be illuminated with soft light when the desk top is slightly brightened. In this case, since the upper task light 25 is incorporated in the upward illumination lamp that functions as ambience illumination, there is an advantage that the structure can be simplified as compared with the case where the upper task light 25 is attached to the support column 1 as a separate structure.

  Further, when the bowl-shaped arm portion 9c is provided on the top bracket 9 and the main body frame 10 is fixed thereto, the main body frame 10 can be firmly held and the fixing strength can be improved. Furthermore, when the wiring groove 33 is provided on the top surface of the top bracket 9, it is possible to fix the cover on the top surface of the top bracket 9, and the cosmetic effect can be improved.

  If the intermediate bracket 40 that supports the lower task light 3 is composed of the front and rear parts 41, 42, it can be attached in a state where the upper lamp 2 is provided on the support column 1, so that the attachment / removal work becomes easy (right and left). It may be separated into parts.)

  Moreover, since the height of the lower task light 3 can be adjusted, it is excellent in that an illumination environment according to the user's request can be realized. Further, since the left and right support columns 1 are connected by the lower task light 3, the lower task light 3 functions as a strength member that increases the independence of the left and right support columns 1, and as a result, is a type that is independent on the floor F. While excellent in strength and stability. This is also one of the excellent effects of this embodiment.

(4) Second Embodiment Next, a second embodiment shown in FIG. 7 will be described. This embodiment is another example of the mounting structure of the upper lamp 2, and the top bracket 9 is a metal plate bent. That is, the top bracket 9 has a top plate portion 9a fixed to the upper surface of the support column 1 with screws 20, and an inclined portion 9d to which the main body frame 10 of the upper lamp 2 is fixed. The inclined portion 9d overlaps the inner surface side of the main body frame 10, but the inner plate of the main body frame 10 is cut out by the dimension of the front and rear width of the inclined portion 9d, and the reinforcing metal fitting 55 is inserted inside the short side portion of the main body frame 10. The reinforcing metal fitting 55 is fixed to the inclined portion 9d with screws 56.

  The reinforcing metal fitting 55 has an upper surface plate 55a and an inclined portion, and enters the hollow portion of the main body frame 10 on both front and rear sides of the notch 57 of the main body frame 10. The upper surface body 55a is a screw 58 and the main body frame. 10 is fixed to the upper plate 11. The inclined portion is fixed to the inclined portion 9 d of the top bracket 9 at the notch 57. Such a reinforcing metal fitting 55 can be used also in the first embodiment.

  Although not shown, the short side portion of the main body frame 10 is cut out by the width of the inclined portion of the top bracket 9, and the protruding portion before and after fitting into the hollow portion of the main body frame 10 is formed in the inclined portion of the top bracket 9. The overhanging portion may be fixed to the main body frame 10 with screws.

(5). Third to Fifth Embodiments In the third embodiment shown in FIG. 8, the lower task light 3 is separated into a plurality of illumination areas 60, and the switches 61 are arranged corresponding to the respective illumination areas 60. 3 on the main body frame 10. For this reason, the desk surface can be finely illuminated.

  FIG. 9 shows another aspect of the upper lamp 2. Among them, in the fourth embodiment shown in (A) and (B), the left and right intermediate portions of one upper lamp 2 are supported by the support column 1, and in the fifth embodiment shown in (C) and (D), one is provided. The left and right upper lamps 2 are attached to the state of the column 1. In the fourth embodiment, a support bracket 62 that crosses the space in the front-rear direction at the left and right intermediate portions is used, and in the fifth embodiment, the top bracket 9 is provided with hook-shaped inclined portions 9c on the left and right sides of the top plate portion 9a. Is used.

  As another embodiment relating to the upper lamp 2, it is also possible to form the upper lamp 2 in a circular shape or an oval shape in a plan view, and to dispose a support column in an intermediate portion thereof. Alternatively, it is possible to arrange three or more upper lamps 2 in a manner extending in the radial direction from the column 1 in plan view. Needless to say, the length and size of the upper lamp 2 can be arbitrarily set as required. It is also possible to attach upper lamps 2 having different lengths and sizes to the left and right columns 1.

(6). Others Although several embodiments of the present invention have been described, the present invention can be embodied in various ways other than the above-described embodiments. For example, it is possible to hang task lights in a plurality of upper and lower stages on the left and right columns. Further, in the present invention, a horizontal beam for connecting the left and right support columns 1 is not necessarily required, but the provision of a horizontal beam is not excluded.

  The lighting device can also be used on a desk. Various shapes can be adopted, such as forming the base plate in an H shape in plan view that is open on both the left and right sides of the support column.

  The invention of the present application can be practically manufactured and exhibits usefulness. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Upper lamp 3 Lower task light 4 Base board 5 Desk 6 Wagon 9 Top bracket 10 Main frame of upward lighting lamp 12 Upward opening groove 13 Circuit board 35 Main body of lower task light (case)
37 Lower task light LED lamp 40 Intermediate bracket 41 Parts constituting the intermediate bracket

Claims (3)

It has left and right struts that have a base body at the lower end and are self-supporting on the floor, and a task light with a light emitter that emits light downward on a horizontally long main body. The task light connects the left and right struts. ing,
Lighting device. A clamp-type bracket that holds the left and right columns is attached to the left and right columns so that the height can be adjusted, and the task light is fixed to the bracket.
The lighting device according to claim 1. The main body of the task light is formed in a groove shape that opens downward, and a large number of LED lamps as the light emitters are arranged in a flying state inside the task light.
The lighting device according to claim 1 or 2.

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