JP2015138747A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device for radiating illumination light with less luminance irregularity using a light source higher in luminous efficiency, longer in emission life, higher in productivity, lower in manufacturing cost, and lower in occurrence frequency of faults due to external factors than a light source using an OLED.SOLUTION: A pair of blinds 10 and 20 that include a plurality of louvers 11 and 21 and can individually manipulate lift positions and rotation angles of the louvers 11 and 21 are provided to face each other in a space 30 of a predetermined length therebetween, and an LED light source 3 is disposed in an upper portion of the space 30 so that the space 30 can serve as a light guide space for guiding emitted light from the LED light source 3. By individually manipulating the lift positions and the rotation angles of the louvers 11 and 21 of the paired blinds 10 and 20, the light emitted from the LED light source 3 and guided into the light guide space 30 is subjected to optical path control so that the light is radiated as irradiation light.

Description

  The present invention relates to an illuminating device, and more particularly, to an illuminating device that uses an emitted light from a light source to control the amount of light to obtain illumination light.

  Conventionally, as this type of illumination device, for example, there is one disclosed in Patent Document 1 as an “illumination window”.

  As shown in FIG. 8, the first transparent flat window glass 80 and the second transparent flat window glass 81 are arranged facing each other, and the first window glass 80 is located on the indoor side (INT). The second window glass 81 is located on the outdoor side (EXT). On the indoor side (INT) of the first window glass 80, a transparent organic LED (hereinafter abbreviated as “OLED”) 82 is disposed over almost the entire area, and is covered with a protective window glass 83. The lighting device 84 is configured.

  In a space between the first window glass 80 and the second window glass 81, a plurality of lamellas 87 attached to a string 86 suspended from the control and motor unit 85 are arranged in parallel to each other. A sunscreen device 88 is provided, and the control and operation of the motor unit 85 allows the lamella 87 to be raised and lowered via the string 86 and the angle α of the lamella 87 to the first window glass 80 (second window glass 81) to be adjusted. Done.

  During the daytime, sunlight (external light) that is transmitted through the second window glass 81 and whose light amount is controlled by raising or lowering the lamella 87 or adjusting the angle passes through the first window glass 80 and the illumination device 84 and is indoor (INT At night, the light emitted from the OLED 82 in the indoor (INT) direction is transmitted through the protective window glass 83 and introduced into the indoor (INT). The light emitted in the outdoor (EXT) direction is It is shielded to prevent leakage to the outdoors (EXT). In some cases, a light reflection process is performed on the indoor (INT) side surface of the melame 87, and the light emitted in the outdoor (EXT) direction from the OLED 82 is reflected in the indoor (INT) direction by the melody 87, so that the indoor (INT) ) Direction and can be introduced indoors (INT).

Special table 2010-526405

  By the way, the illumination window having the above-described structure has a reduced production efficiency as the OLED serving as a light source for illumination at night increases in size. In particular, when the size corresponds to the window glass, the material cost, the manufacturing equipment cost, the yield, etc. The manufacturing cost including is extremely high.

  Moreover, OLED has a low luminous efficiency as a light source (illumination light source) used for illumination, and has a short luminous lifetime. Furthermore, since it is disposed on the window, there is a risk that it may cause a malfunction due to an external factor and impair reliability. Specifically, damage due to physical vibration or impact, element deterioration due to heat, moisture, ultraviolet rays, or the like can be considered. Due to the increase in size, replacement in the event of a problem becomes time consuming and difficult.

  Therefore, the present invention was devised in view of the above-mentioned problems, and the object of the present invention is that the light emission efficiency is high and the light emission life is long, the productivity is good, and the production cost is low with respect to the light source by OLED. An object of the present invention is to provide an illuminating device that irradiates illumination light with less luminance unevenness by using a light source that is less likely to cause problems due to external factors.

  In order to solve the above-mentioned problem, the invention described in claim 1 of the present invention is a plurality of devices that are arranged to face each other with a predetermined interval space, and each of them can be moved up and down and rotated in conjunction with each other. A pair of blinds having louvers, and an LED light source disposed above the space, and the light emitted from the LED light sources and guided through the space is transmitted to each of the louvers of the pair of blinds. The optical path is controlled by individually operating up and down and rotation, and the light is emitted outside the louver as illumination light.

  The invention described in claim 2 of the present invention is characterized in that, in claim 1, the space is widest on the LED light source side and becomes narrower as the distance from the LED light source is increased. .

  According to a third aspect of the present invention, in the first or second aspect, each louver of the pair of blinds has a substantially rectangular flat plate shape, and both end faces along the longitudinal direction of the louver. Has a stepped shape of one step along the longitudinal direction, and when the louvers of the respective blinds are closed, the end surfaces of the stepped shapes of the one step of the adjacent louvers are fitted to each other. The louver is located in a substantially planar shape.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, the louvers of the pair of blinds extend along guide rails provided on both sides of the louver. It is characterized by moving up and down.

  The invention described in claim 5 of the present invention is characterized in that, in any one of claims 1 to 4, the pair of blinds is arranged to face the window glass. It is.

  The illuminating device of the present invention is a pair of blinds, each of which has a plurality of louvers, and each of which can individually operate the raising / lowering position and rotation angle of the louvers, for controlling the optical path of light emitted from the LED light source. Each louver was appropriately operated individually and was irradiated as irradiation light.

  As a result, the light that has been subjected to the optical path control and becomes the irradiation light has a desired light distribution characteristic, and it is possible to ensure a good visibility with respect to the illumination object and to produce a comfortable illumination space.

It is sectional drawing of the illuminating device of embodiment. Similarly, it is sectional drawing of the illuminating device of embodiment. It is explanatory drawing of a louver. It is explanatory drawing of raising / lowering of a louver. It is explanatory drawing of accommodation of a louver. It is explanatory drawing of the optical path control by a louver. It is explanatory drawing of the optical path control by a louver. It is explanatory drawing of a prior art example.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7 (the same parts are given the same reference numerals). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

  1 and 2 are cross-sectional views of the illumination device of the embodiment, in which FIG. 1 shows a state in which the louver of the blind is lowered and closed, and FIG. 2 shows a state in which the louver is raised and stored.

  The illuminating device 1 according to the present embodiment is an illuminating device that is a combination of a Venetian blind (hereinafter abbreviated as “blind”) 2 and an LED light source 3. In the nighttime, the light quantity and light distribution characteristics of the LED light to be taken indoors are adjusted by the blind 2.

  The blind 2 is composed of a pair of a first blind 10 and a second blind 20, and each blind 10, 20 is suspended from above, and when the respective louvers 11, 21 are lowered and closed, the louvers are mutually closed. 11 and 21 are opposed to each other with a predetermined space (space space) 30 therebetween, and the space 30 gradually narrows from the upper side toward the lower side.

  The pair of blinds 2 are arranged side by side with the transparent window glass 4, and the first blind 10 is disposed on the window glass side (outdoor side), and the second blind 20 is disposed on the opposite side (indoor side) of the window glass 4. Has been. Above the pair of blinds 2, an LED light source 3 having a light emission direction directed downward is attached, and although not shown, the elevating positions of the plurality of louvers 11, 21 of each blind 10, 20 and The upper support part 5 to which the raising / lowering control mechanism and rotation control mechanism which control a rotation angle were attached is provided. The upper support portion 5 has a louver storage portion 5a for storing the raised (rolled) louvers 11 and 21.

  Further, below the upper support portion 5, the surface 6 a facing the LED light source 3 attached to the upper support portion 5 is used as a reflective surface, and the louvers 11 and 21 are lowered and closed in a closed state. , 21 is provided with a lower support portion 6 having a locking portion 6b to which the tip of 21 is locked.

  The upper support part 5 and the lower support part 6 also support the upper part and the lower part of the window glass 4, respectively.

  As shown in FIG. 3 (illustration of the louver), each of the louvers 11 and 21 has a substantially rectangular flat plate shape, and a lift control mechanism is provided at the center of both end faces 11a and 21a along the longitudinal direction. And function support portions 11b and 21b that are connected to the function interlocking portions 17 and 27 that are functionally interlocked with the rotation control mechanism and that functionally support the raising and lowering and rotation of the louvers 11 and 21 are provided. , 27 is moved up and down and rotated via function support portions 11b and 21b connected to 27. Further, each louver 11, 21 has a one-step staircase shape along the longitudinal direction of both end faces 11 a, 21 a along the longitudinal direction, and when it is lowered and closed (A), The stepped end surfaces of the louvers 11 and 21 adjacent to each other are fitted to each other so that all the louvers 11 and 21 are arranged in a substantially planar shape.

  In this case, the surfaces 11c and 21c facing the indoor side of the louvers 11 and 21 are both specular reflection surfaces. Alternatively, instead of using the surfaces 11c and 21c facing the indoor side of the louvers 11 and 21 as specular reflection surfaces, the louvers 11 and 21 themselves are formed of a reflective light shielding member (for example, a white light shielding member), so that the indoor side It is also possible to make the surfaces 11c and 21c facing the surface white reflective surfaces.

  The louvers 11 and 21 are rotated from the closed state (shown by A) to the upper portions 11d and 21d on the outdoor side (window glass side) with the function supporting portions 11b and 21b as fulcrums. An appropriate angle α (state indicated by B) is set in the range of angle β (state indicated by C) that is substantially perpendicular to the up-and-down direction of 21.

  As shown in FIG. 4 (an explanatory diagram of raising and lowering the louvers), the function support portions 11b and 21b are disposed in the vicinity of the outside of the function support portions 11b and 21b. This is done by sliding in the guide grooves 15a and 25a provided in the guide rails 15 and 25 whose intervals are gradually narrowed from above to below.

  When each louver 11, 21 is stored in the louver storage part 5 a of the upper support part 5, all the louvers 11, 21 are connected to the function interlocking parts 17, 27 as shown in FIG. The function support portions 11b and 21b connected to each other are pivoted and turned in the overlapping direction, and are lifted upward from the lower louvers 11 and 21 so as to overlap with the upper louvers 11 and 21, respectively. The louvers 11 and 21 are all stored in the louver storage portion 5a in a state where they overlap.

  Therefore, when the blind 2 is used, the louvers 11 and 21 of the first blind 10 and the second blind 20 are independently operated, and an appropriate lighting environment is obtained by combining the operations of the louvers 11 and 21 with each other. Can be obtained.

  Specifically, in the daytime, for example, the louvers 11 and 21 of both the first blind 10 and the second blind 20 are accommodated in the louver accommodating portion 5a of the upper support portion 5, thereby transmitting the window glass 4. The outside light is inserted into the room as it is (see FIG. 2), and one or both of the louver 11 of the first blind 10 and the louver 21 of the second blind 20 are lowered to the bottom and the lowered louver is closed. Thus, most of the external light transmitted through the window glass 4 can be shielded (see FIG. 1).

  In other operations, that is, by appropriately setting the raising and lowering positions and rotation angles of the louvers 11 and 21 of the first blind 10 and the second blind 20, a desired light amount of outside light to be inserted indoors. Can be adjusted.

  On the other hand, at night, as shown in FIG. 6 (an explanatory diagram of optical path control by louvers), the louver 11 of the first blind 10 is lowered and closed, and the louver 21 of the second blind 20 is closed. An interval space (light guide space) that is emitted from the LED light source 3 and provided between the first blind 10 and the second blind 20 by descending downward and setting the rotation angle to an appropriate angle. A part of the light L1 guided in the light 30 is reflected by the reflection surface of the surface 11c facing the indoor side of the louver 11 of the first blind 10, and the reflected light is reflected by the second blind. 20 of the louver 21 of the second blind 20 is taken in the indoor side of the louver 21 of the second blind 20 in the same way. Reflected by the reflective surface Of the reflected light is introduced to the indoor. Therefore, both the light L1 emitted from the LED light source 3 and reflected by the louver 11 of the first blind 10 and the light L2 reflected by the louver 21 of the second blind 20 are efficiently taken indoors. The utilization efficiency of the light from the LED light source 3 is increased, and a bright illumination device is realized.

  Further, as shown in FIG. 7 (an explanatory diagram of optical path control by the louver), the louver 11 of the first blind 10 and the louver 21 of the second blind 20 are shifted in the vertical direction so that they are in the middle positions of each other, and By setting the mutual louvers 11 and 21 to an appropriate rotation angle, the light is emitted from the LED light source 3 and guided in the interval space 30 provided between the first blind 10 and the second blind 20. Among the emitted light, a part of the light L1 is reflected by the reflecting surface of the surface 11c facing the indoor side of the louver 11 of the first blind 10, and the reflected light is reflected by the second blind 20. Similarly, the light L1 emitted from the LED light source 3 and reflected by the louver 11 of the first blind 10 through the space between the moved louvers 21 and the louver of the second blind 20 Both light light L2 reflected by the 1 incorporated efficiently indoors, bright lighting apparatus is increasing utilization efficiency of light from the LED light source 3 is realized.

  In this case, the light L1 reflected by the louver 11 of the first blind 10 and introduced indoors and the light L2 reflected by the louver 21 of the second blind 20 and introduced indoors are the louvers 11 and 21 of each other. By appropriately setting the elevation position and the rotation angle, they can be directed in the same direction. That is, they can be taken indoors as substantially parallel light. As a result, the light emitted from the LED light source 3 is efficiently taken indoors, and the light use efficiency is increased to realize a bright lighting device. At the same time, the light taken indoors has a good light distribution characteristic, and illumination An illuminating device having good visibility with respect to the object can be realized.

  Note that the louver 21 of the second blind 20 may be formed of a diffuse transmission member (for example, a white translucent member), or may be formed of a translucent resin and subjected to light diffusion treatment on the surface. .

  In this case, during daytime, for example, the louvers 11 and 21 of both the first blind 10 and the second blind 20 are accommodated in the louver accommodating portion 5a of the upper support portion 5, thereby allowing the window glass 4 to pass through. The light is inserted into the room as it is, and at least the louver 11 of the first blind 10 is lowered to the bottom to close the louver 11 so that most of the outside light transmitted through the window glass 4 is blocked. it can.

  Further, by lowering only the louver 21 of the second blind 20 and closing the lowered louver 11, the external light transmitted through the window glass 4 is reduced to reduce the amount of light inserted into the room. be able to.

  In addition, in order to set the amount of light to be inserted indoors to a desired amount, it is possible to appropriately set up and down positions and rotation angles of the louvers 11 and 21 of the first blind 10 and the second blind 20, respectively. It becomes.

  On the other hand, at night, the louver 21 of the second blind 20 is stored in the louver storage part 5a of the upper support part 5, and only the louver 11 of the first blind 10 is operated to appropriately set the lifting position and the rotation angle. By doing so, only the reflected light emitted from the LED light source 3 and reflected by the louver 11 of the first blind 10 can be taken indoors.

  On the other hand, by appropriately setting the raising and lowering positions and rotation angles of the louvers 11 and 21 of the first blind 10 and the second blind 20, the second blind 20 emits from the LED light source 3. Diffused light transmitted through the louver 21 and reflected light emitted from the LED light source 3 and reflected by the louver 11 of the first blind 10 are taken indoors.

  In addition, by making the surface 6a facing the LED light source 3 of the lower support portion 6 a reflective surface, the light emitted from the LED light source 3 and guided in the interval space 30 and directly reaching the reflective surface 6a, And the light which has emitted from the LED light source 3 and reflected by the louver 11 of the first bride 10 and the louver 21 of the second blind 20 and then arrived at the reflection surface 6a is returned to the LED light source 3 side again, and the louver 11, 21 is led indoors.

  Thereby, the emitted light from the LED light source 3 is efficiently taken indoors, the use efficiency of the light from the LED light source 3 is increased, and a bright illumination device is realized.

  As described above, the illumination device of the present invention uses an LED light source instead of the OLED used in the illumination window described in the background art. Thereby, the area of the light source is significantly reduced, and the cost for the light source can be greatly reduced. In addition, when the OLED has a size corresponding to the window glass in particular, the manufacturing cost including the material cost, the manufacturing equipment cost, the yield and the like becomes extremely high, whereas the size of the LED light source itself does not change. There is no increase in manufacturing costs.

  In addition, the LED light source has higher luminous efficiency and longer luminous lifetime than the OLED. Further, there is little damage due to physical vibration or impact, deterioration of the element due to heat, moisture or ultraviolet rays, and the reliability is high. In addition, even if the lighting device is enlarged, it can be easily replaced when a problem occurs.

  At the same time, in the illuminating device, the optical path control of the light emitted from the LED light source includes a pair of blinds each having a plurality of louvers and each capable of individually operating the raising / lowering position and rotation angle of the louvers, Each of the louvers was appropriately operated individually.

  Therefore, the illumination light that has been optically controlled and taken indoors has a desired light distribution characteristic, and it is possible to secure a good visibility for the illumination object and produce a comfortable illumination space.

DESCRIPTION OF SYMBOLS 1 ... Illuminating device 2 ... Venetian blind 3 ... LED light source 4 ... Window glass 5 ... Upper support part 5a ... Louver storage part 6 ... Lower support part 6a ... Surface 6b ... Locking part 10 ... First blind 11 ... Louver 11a ... End surface 11b ... Function support portion 11c ... Surface 11d ... Upper portion 15 ... Guide rail 15a ... Guide groove 17 ... Function interlocking portion 20 ... Second blind 21 ... Louver 21a ... End surface 21b ... Function support portion 21c ... Surface 21d ... Upper portion 25 ... Guide rail 25a ... Guide groove 27 ... Function interlocking part 30 ... Spacing space (light guide space)

Claims (5)

A pair of blinds having a plurality of louvers, each of which is opposed to each other with a predetermined interval space, each capable of being moved up and down and rotated in conjunction with each other;
An LED light source disposed on the upper part of the space,
The light emitted from the LED light source and guided through the space interval is optically controlled by individually operating the up and down and rotation of each louver of the pair of blinds, and is emitted outside the louver as illumination light A lighting device.   The lighting device according to claim 1, wherein the space is widest on the LED light source side and becomes narrower as the distance from the LED light source increases.   Each of the louvers of the pair of blinds has a substantially rectangular flat plate shape, and both end surfaces along the longitudinal direction of the louvers have a one-step staircase shape along the longitudinal direction. 3. The illumination according to claim 1, wherein when the louvers are closed, the end surfaces of the first stepped shape of adjacent louvers are fitted to each other so that all the louvers are positioned in a substantially planar shape. apparatus.   4. The lighting device according to claim 1, wherein each louver of the pair of blinds moves up and down along guide rails provided on both sides of the louver. 5.   The lighting device according to any one of claims 1 to 4, wherein the pair of blinds are arranged to face the window glass.

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