JP2009266579A - Planar luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a shade of a hand or the like hardly reflected on an illuminated face of planar luminaire and hardly affect illuminating work. <P>SOLUTION: The planar luminaire 1 includes a planar light source 2, a support member 3 fitted at a rear-face lower end 22 of the planar light source 2 for supporting the planar light source 2 in free turning in a depression angle direction, and a hooking part 4 fitted at the support member 3 to be hooked to an upper end of an object for fixture mounting. A length in a horizontal direction of a light-emitting face 21 of the planar light source 2 is to be nearly 600 mm or longer, wider than an average shoulder width of a person, so that, at illuminating a spot near the hand, a solid angle of an emission face as seen from an illumination object can be made large, and therefore, the object for illumination can be illuminated under a large solid angle, a shade of a hand or the like hardly reflected on the illumination face. Moreover, the fixture can be fixed only by hooking a hooking part 4 to an upper end of the object for fixture mounting, so that a base of a stand for fixing the fixture no more takes up a space, and therefore, hardly hinders an illumination work. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a planar luminaire provided with a planar light source.

  Conventionally, a stand for suspending a large-screen thin display device is known (for example, see Patent Document 1). The stand includes a base installed on the floor surface and two support columns installed on the base. Each of the two struts is bent forward at the top, and has a hanging tool that is suspended from the upper locking tool of the large-screen thin display device at the tip, and the above display at the lower part. It has a connecting body for connecting and fixing the lower locking tool of the apparatus by pulling backward.

By the way, the light emitting surface of the planar lighting fixture is wider than that of a rod-shaped or point light source. However, in general, since the horizontal length of the light emitting surface is not so long, when illuminating the hand when working on a desk, the solid angle of the light emitting surface is small when viewed from the illumination target, Shadows sometimes appeared on the illuminated surface. In addition, when the planar light source is installed and installed on a stand as described in Patent Document 1, the base of the stand may take up space and interfere with work.
JP 2000-216553 A

  The present invention has been made in order to solve the above-described conventional problems, and when lighting a hand, a shadow of a hand or the like is not easily reflected on the surface to be illuminated, and a surface lighting device that does not easily interfere with the lighting operation is provided. The purpose is to provide.

  In order to achieve the above object, the invention according to claim 1 is a planar luminaire provided with a planar light source, and is provided at the lower back end of the planar light source and rotatably supports the planar light source in the depression direction. And a hook portion provided on the support member and hooked to the upper end of the fixture attachment target, and the horizontal length of the light emitting surface of the planar light source is approximately 600 mm or more.

  According to a second aspect of the present invention, there is provided the planar light fixture according to the first aspect, wherein another planar light source having at least one side edge portion rotatably connected to both side edge portions of the planar light source is provided. In addition.

  According to a third aspect of the present invention, in the planar lighting device according to the second aspect, each of the planar light sources includes a human detection means, and when the human detection means does not detect a person, the light is automatically turned off or dimmed. It has a lighting control function.

  According to a fourth aspect of the present invention, in the planar lighting device according to any one of the first to third aspects, the planar light source is a color organic EL or a color LED panel, and a timer for measuring the current time is provided. In addition, the light color or illuminance of the illumination light from the planar light source is changed according to the current time measured by the timer.

According to the first aspect of the present invention, since the horizontal length of the light emitting surface of the planar light source is equal to or greater than the average shoulder width of a human, when the hand is illuminated, the three-dimensional shape of the light emitting surface viewed from the illumination target The angle can be increased, and therefore the illumination object can be illuminated under the large solid angle. For this reason, it is difficult for shadows of hands and the like to appear on the illuminated surface.
Also, since the instrument can be fixed simply by hooking the hook on the upper end of the instrument mounting target, unlike the conventional case, the base of the stand for fixing the instrument does not take up space. Hard to get in the way.

  According to the invention of claim 2, since another light source is connected to both ends of the surface light source and the light emitting surface spreads laterally compared with the invention of claim 1, when illuminating the hand, The solid angle of the seen light emitting surface can be made larger. In addition, the above-described solid angle can be further increased by rotating the planar light sources at both ends so that their directions are inward. Therefore, it is possible to illuminate the illumination target under a larger solid angle. For this reason, it is difficult for the shadow of a hand or the like to appear on the illuminated surface.

  According to the invention of claim 3, when a person is not in the vicinity of the planar light source, it can be turned off or dimmed, so that energy saving can be achieved.

  According to the invention of claim 4, since the light color or illuminance of the illumination light can be changed according to the time, it is possible to provide an arousal stimulus by illumination or no arousal stimulus in accordance with a human generation rhythm. It can be turned on so that it does not interfere with comfortable sleep.

Hereinafter, planar lighting devices according to various embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
Fig.1 (a)-(c) shows the planar lighting fixture which concerns on this embodiment. The planar lighting device 1 includes a planar light source 2, a support member 3 that supports the planar light source 2 so as to be rotatable in the depression direction, and a hook portion 4 that is provided on the support member 3 and is hooked on the upper end of the fixture attachment target. With. The horizontal length L1 of the light emitting surface 21 of the planar light source 2 is approximately 600 mm or more. The support member 3 is provided at the lower rear end 22 of the planar light source 2.

  The planar light source 2 is a color organic EL panel, a color inorganic EL panel, a combination of a color LED and a light guide plate that emits surface light by guiding light emitted from the color LED, or a direct type or edge light having a cold cathode fluorescent lamp. It consists of a formula surface light source unit and the like. The planar light source 2 has a horizontally long shape, and the horizontal length is, for example, approximately three times or more the vertical length. It is desirable that a substantially uniform amount of light is emitted from the light emitting surface 21 of the planar light source 2 regardless of the position.

  The support member 3 is composed of, for example, two rod-like members extending in a substantially vertical direction, and a lower end portion 31 of the support member 3 is connected to the rear lower end 22 so that the planar light source 2 is rotatable in a forward tilt direction. ing. The material of the support member 3 is resin or metal.

  The hook 4 is provided on the top 32 of the support member 3. The hook portion 4 extends in a substantially horizontal direction from the top portion 32 of the support member 3 and behind the planar light source 2, and includes a circuit housing portion 41 in which a lighting control circuit for the planar light source 2 is housed, and a circuit housing portion A plate-like sandwiching member 42 that extends downward from the tip of 41 and sandwiches the upper end portion of the device attachment target with the support member 3. An anti-slip member 44 is attached to the lower end of the inner surface of the sandwiching member 42.

  The circuit storage portion 41 has a width adjustment mechanism 43 that can adjust the width between the support member 3 and the pinching member 42. The width adjusting mechanism 43 includes, for example, a rod-shaped member 43a that is provided so as to be able to advance and retreat from the circuit housing portion 41 and has a pinching member 42 fixed to the tip thereof, and a screw that presses the rod-shaped member 43a from the side and fixes it at an arbitrary position. It is comprised with a rod fixing member, such as. The material of the hook portion 4 is resin or metal.

  In addition, the circuit storage unit 41 stores a wire having one end fixed to the upper end of the back surface of the planar light source 2, and further, a brake mechanism that locks the wire in a state where a part or all of the wire is pulled out; A wire take-up mechanism for taking up the drawn wire is housed.

  FIG. 2 shows a state in which a part of the above-described wire is pulled out from the circuit storage portion 41. When the wire 45 is pulled out, the planar light source 2 rotates by its own weight with its lower end as an axis and tilts forward, and is pulled by the wire 45 to maintain its forward tilt posture.

  FIG. 3 shows an example of use of the planar lighting device 1. The planar lighting device 1 is attached to a fixture mounting target 5 such as a headboard of a bed as illustrated or a partition used in an office or the like. At the time of mounting the instrument, the circuit storage portion 41 and the sandwiching member 42 are hooked on the upper end of the instrument mounting target 5 from above, and the support member 3 (not shown in the figure) and the sandwiching member 42 sandwich the instrument mounting target 5. The planar lighting device 1 is hooked on the device attachment target 5. Before or after hooking, the width between the support member 3 (not shown in the figure) and the sandwiching member 42 is preferably adjusted by the width adjusting mechanism 43 in accordance with the thickness of the upper end of the device attachment target 5.

  In the planar lighting fixture 1 having the above-described configuration, the horizontal length of the light emitting surface 21 of the planar light source 2 is approximately 600 mm or more, which is equal to or greater than the average shoulder width of humans. The solid angle of the light emitting surface viewed from the illumination target can be increased, and therefore the illumination target can be illuminated under the large solid angle. For this reason, it is difficult for shadows of hands and the like to be reflected on the surface to be illuminated, and so-called hand darkness is unlikely to occur. In addition, when a device is attached to the headboard of the bed, reading is performed in a lying state, and the hand is illuminated, even if the posture is changed by turning over to the left and right, it is difficult for shadows such as hands or heads to occur.

  Moreover, since the instrument can be fixed simply by hooking the hook portion 4 on the upper end of the instrument attachment target 5, unlike the conventional case, the base of the stand for fixing the instrument does not take up space. Therefore, it is difficult to disturb the lighting work.

  Moreover, since the planar light source 2 can be rotated in the depression direction, the illumination direction can be arbitrarily changed, and the illumination target can be efficiently illuminated. Furthermore, since the width between the support member 3 and the pinching member 42 can be adjusted by the width adjusting mechanism 43 in accordance with the thickness of the upper end portion of the instrument attachment target, the instrument is fixed regardless of the thickness of the instrument attachment target. And can be stabilized.

(Second Embodiment)
4 (a) and 4 (b) show a planar lighting fixture according to the second embodiment of the present invention. Compared with the first embodiment, the planar luminaire 1 according to the present embodiment has different planar light sources 6 and 7 connected to the side edges 23 and 24 of the planar light source 2 one by one, and human detection. Sensors 25, 61, 71 (person detection means) are further provided. The positions of the planar light sources 6 and 7 are different in FIGS.

  The side edge 62 of the planar light source 6 is rotatably connected to one side edge 23 of the planar light source 2, and the side edge 72 of the planar light source 7 is the other side edge 24 of the planar light source 2. And are rotatably connected. The planar light source 2 is also configured to be rotatable in the forward tilt direction in the present embodiment, and the ease of rotation of the planar light sources 6 and 7 is that the planar light source 2 is tilted forward. Desirably, the weights 6 and 7 do not rotate by their own weight.

  One human detection sensor 25, 61, 71 is attached to each of the front lower end portions 26, 63, 73 corresponding to each of the planar light sources 2, 6, 7. The human detection sensors 25, 61, 71 are constituted by pyroelectric infrared sensors, ultrasonic sensors, or the like, and the detection range is substantially the front of the sensor.

  5A and 5B show a state in which a part of the wire 45 is pulled out from the circuit storage portion 41. FIG. Also in this embodiment, when the wire 45 is pulled out, the planar light sources 2, 6, and 7 are rotated forward by their own weight with the lower end of the planar light source 2 as an axis, and are tilted forward by being pulled by the wire 45. Posture is maintained.

  FIG. 6 shows an electrical configuration of the planar lighting device 1 of the present embodiment. The planar lighting device 1 includes a lighting control unit 9 that individually controls the planar light sources 2, 6, and 7 based on the detection results of the human detection sensors 25, 61, and 71. The lighting control unit 9 can be composed of a microprocessor or the like, and this microprocessor is a planar light source corresponding to the human detection sensors 25, 61, 71 while no human is detected by the human detection sensors 25, 61, 71. 2, 6, 7 are automatically turned off or dimmed.

  In the present embodiment, as compared with the first embodiment, since another planar light sources 6 and 7 are connected to both ends of the planar light source 2 and the light emitting surface spreads laterally, when illuminating the hand, The solid angle of the light emitting surface viewed from the object can be further increased. Further, the above-described solid angle can be further increased by rotating the planar light sources 6 and 7 at both ends so that their directions are inward. Therefore, it is possible to illuminate the illumination target under a larger solid angle. For this reason, it is difficult for the shadow of a hand or the like to appear on the illuminated surface.

  Further, since the planar light sources 2, 6, and 7 are turned off or dimmed while the human detection sensors 25, 61, and 71 do not detect the presence of a person in the vicinity thereof, energy saving can be achieved.

  Further, by rotating and fixing the planar light sources 6 and 7 inward, they become a light shielding plate or a reflecting plate with respect to the illumination light from the planar light sources 2, 6 and 7. The amount of leakage can be reduced, and unnecessary light irradiation to the periphery can be prevented.

(Third embodiment)
FIG. 7 shows an electrical configuration of the planar lighting fixture 1 according to the third embodiment of the present invention. The planar lighting device 1 according to the present embodiment further includes a timer 10 that measures the current time. The lighting controller 9 sets the normal illuminance of the planar light sources 2, 6, 7 to, for example, approximately 750 [lx], and the illumination light from the planar light sources 2, 6, 7 according to the current time measured by the timer 10. The light color or illuminance is changed. Due to this change, the illumination light is white light from morning to noon or light having a color temperature of 5000 to 10000 [K] with a large amount of blue component, and light at a wavelength of 2000 to 3500 [K] at night. However, it is assumed that the light in the vicinity of about 464 [nm] is not included at all or hardly. In addition, the lighting control unit 9 performs dimming control on the planar light sources 2, 6, and 7 so that the illuminance of the illumination light is approximately 1500 to 2500 [lx], for example, for approximately 1 hour from 1 pm. It is desirable that the light color or illuminance of the illumination light can be set to the lighting control unit 9 by the user operating an operation unit such as a button.

  By the way, humans have a biological rhythm with a substantially daily cycle called circadian rhythm, which is closely related to the daily secretion rhythm of a hormone called melatonin. It is known that the secretion of melatonin is suppressed by light, and since the amount of exposure to light is large in the morning and noon, the secretion of melatonin is suppressed and the biological rhythm moves toward awakening and activity. At night, the amount of light is reduced, so much melatonin is secreted and the biological rhythm goes to sleep. For this reason, when exposed to strong light at night, the secretion of melatonin continues to be suppressed, and the biological rhythm is disturbed. Moreover, it is known that the secretion of melatonin is remarkably suppressed by exposure to blue light having a wavelength of about 464 [nm].

  Therefore, in the present embodiment, in accordance with the circadian rhythm, the illumination light is white light or light having a color temperature of 5000 to 10000 [K] with many blue components from morning to noon. Secretion can be suppressed and arousal stimulation can be given. Also, the night illumination light contains little or no blue light that significantly suppresses melatonin secretion, so even if an instrument is used for reading at night, for example, it is comfortable to illuminate without giving a wakeful stimulus. So that it does n’t interfere with sleep. In addition, since the illuminance of the illumination light is increased to about 1500 to 2500 [lx] for about 1 hour from 1 pm, it is possible to suppress sleepiness after lunch.

  In addition, this invention is not limited to the structure of the said 1st thru | or 3rd embodiment, A various deformation | transformation is possible according to a use purpose. For example, the horizontal length L1 of the light emitting surface 21 of the planar light source 2 is not limited to the above, and may be equal to or greater than the average human shoulder width.

(A) is a perspective view when the planar luminaire according to the first embodiment of the present invention is viewed obliquely from the front, (b) is a perspective view when the planar luminaire is viewed from obliquely rear, c) is a cross-sectional view of a coplanar lighting fixture. The longitudinal cross-sectional view when a wire is pulled out in the said planar lighting fixture. The perspective view which shows the usage example of the said planar lighting fixture. (A) is a perspective view of the planar lighting fixture which concerns on the 2nd Embodiment of this invention, (b) is a perspective view when rotating the planar light source of both ends ahead in the same planar lighting fixture. (A) is a perspective view when the said planar lighting fixture is inclined forward, (b) is a side view at that time. The electrical block diagram of the said planar lighting fixture. The electrical block diagram of the surface lighting fixture which concerns on the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Planar lighting fixture 2, 6, 7 Planar light source 25, 61, 71 Person detection sensor (person detection means)
3 Support member 4 Hook 10 Timer L1 Horizontal length of light emitting surface

Claims (4)

In a surface lighting device equipped with a surface light source,
A support member that is provided at the lower end of the back surface of the planar light source and supports the planar light source so as to be rotatable in the depression direction;
A hook portion provided on the support member and hooked on the upper end of the device attachment target,
The planar illuminator characterized in that a horizontal length of a light emitting surface of the planar light source is approximately 600 mm or more.   The planar lighting device according to claim 1, further comprising another planar light source having at least one side edge portion rotatably connected to both side edge portions of the planar light source.   Each of the planar light sources includes a human detection unit, and has a lighting control function of automatically turning off or dimming when the human detection unit does not detect a person. lighting equipment. The planar light source is composed of a color organic EL, or a color LED and a light guide plate that guides light emitted from the color LED to emit light.
A timer that measures the current time
The planar illumination according to any one of claims 1 to 3, wherein a light color or illuminance of illumination light from the planar light source is changed according to a current time measured by the timer. Instruments.

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