JP4962638B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device using a light emitting diode (LED) suitable for illuminating a relatively wide range.

In recent years, light-emitting diodes have come to be used in place of fluorescent lamps as a background of the high-intensity and long-life of light-emitting diodes as energy-saving lighting, and the shape is especially formed to replace fluorescent lamps. There is no time for enumerating this, such as JP 2007-115595 A (see Patent Document 1).
On the other hand, a light emitting diode is originally a monochromatic light system, and based on this, a short wavelength light is made white using a fluorescent paint or the like, and white is made using a three primary color light emitting diode. However, white is generally used as illumination to illuminate an object, but in order to create a certain atmosphere, it is often better that the color tone is shifted rather than white in terms of chromaticity. In view of this, Japanese Patent Application Laid-Open No. 2006-59760 (Patent Document 2) proposes using three primary color light emitting diodes and finely adjusting the color intensity to expand the application of illumination light.

JP 2007-115595 A JP 2006-59760 A

  However, as an alternative to fluorescent lamps, two types of fluorescent lamps, white and daylight, occupy the system, and since the light emitting diodes themselves are point light sources, a plurality of them can be integrated together, so the same light emitting diode (lamp) ) May be easier to assemble, and as a replacement for fluorescent lamps, only white may be pursued. In this case, high luminance as a lighting fixture is required, and it is easy to overheat in terms of heat dissipation and power consumption due to glare, incorporation of more light emitting diodes than necessary for the required brightness, or current flow. . On the other hand, when trying to adjust the color balance using the light emitting diodes of the three primary colors, light that deviates from white on the chromaticity is used thereby, so it cannot be denied that the illuminance is insufficient.

  In addition, the cost of the drive circuit structure and the light emitting diodes used, the size of the mounting board, and the circuit design cannot be significantly streamlined or simplified. This is a drag on expansion. In Japan, in addition to numerical values on illuminance, there are many cases where importance is placed on the quality of lighting, the balance with others at the installation location, and comparison with conventional glass type lighting.

Means to solve the problem

  The present invention has been made in consideration of such points, and in addition to a plurality of monochromatic light emitting diodes that give a specific atmosphere, a plurality of white light emitting diodes less than the monochromatic light emitting diodes are added in order to ensure illuminance. Arranged so that the illumination area can be illuminated, preferably the monochromatic light emitting diodes are blue, red, orange or green, more preferably white light emitting diodes are arranged in a row. The arranged monochromatic light emitting diodes are arranged on both sides of a row of white light emitting diodes.

(1) The LED lighting device of the present invention is introduced from a substrate, an electrode portion for introducing external power into the substrate, a plurality of LED elements mounted on the illumination direction side of the substrate, and the electrode portion. An LED lighting device including an internal power supply that converts current voltage and supplies the converted LED to the LED elements, and the plurality of LED elements are arranged in one direction, and a plurality of single-color light emitting diode rows of a specific color; It is possible to illuminate a specific illumination area with the specific color by comprising a white light emitting diode array arranged so as to be sandwiched between the monochromatic light emitting diode arrays so as not to impair the color exhibited by the monochromatic light emitting diode arrays. It is characterized by arranging in this way.
(2) The LED illumination device of the present invention is characterized in that, in the LED illumination device of the invention of (1), the monochromatic light emitting diode array emits blue monochromatic light.
(3) The LED illumination device of the present invention is characterized in that, in the LED illumination device according to (1), the monochromatic light emitting diode array emits red, orange or green monochromatic light. .
(4) The LED lighting device of the present invention is the LED lighting device according to any one of (1) to (3), wherein the monochromatic light emitting diode array is linearly arranged on both sides of the white light emitting diode array or staggered. It is characterized by being arranged in a shape.
(5) The LED lighting device according to the present invention is the LED lighting device according to any one of (1) to (4), wherein the plurality of LED elements have substantially the same VF and are arranged in three or four rows. It is characterized by that.
(6) The LED illumination device according to the present invention includes the translucent case that diffuses the light emitted from the plurality of LED elements to the outside in the LED illumination device according to any one of (1) to (5). It is a feature.
(7) The fluorescent lamp type LED lighting tube of the present invention is a fluorescent lamp type LED lighting tube that can be directly mounted on a socket of an existing fluorescent lamp lighting tube,
From the base, a base of JIS standard that allows external power to be introduced into the base board and can be directly mounted on the socket of an existing fluorescent lamp lighting tube, a plurality of LED elements mounted on the side of the board in the illumination direction, and the base An internal power supply that converts the introduced current voltage and supplies the converted LED to the LED element; and a translucent cylinder that diffuses light emitted from the plurality of LED elements to the outside.
The plurality of LED elements are arranged in a linear or staggered manner in a long direction of the fluorescent lamp type LED lighting tube, and a plurality of single color light emitting diode rows of a specific color, and a color exhibited by the single color light emitting diode row A white light emitting diode array arranged so as to be sandwiched between the monochromatic light emitting diode arrays so as not to be damaged, and arranged so that a specific illumination area can be illuminated with the specific color It is.
(8) The LED illumination device of the present invention is characterized by including the fluorescent lamp type LED illumination tube of (7) above.

The invention's effect

  In the present invention, a plurality of white light-emitting diodes that provide such a specific atmosphere are added to a plurality of white light-emitting diodes, which are fewer than the single-color light-emitting diodes, in order to ensure illuminance. Since it is arranged so that it can be illuminated, it feels brighter than the actual illuminance, and the atmosphere and effects such as warm / cold colors and perspective that a single color brings on can be felt softly. Furthermore, when blue is used as the monochromatic light emitting diode, it feels natural and acts psychologically to obtain a crime prevention effect. On the other hand, when red is used for a monochromatic light emitting diode, it feels natural and acts on plant growth, and when orange is used, it feels natural and improves visibility in tunnels. When green is used, it feels natural and is effective for cultivation such as shiitake cultivation.

  In addition, the monochromatic light emitting diodes are arranged in a line, and by arranging the white light emitting diodes between the monochromatic light emitting diodes, the light is mixed and bright, and the monochromatic light such as blue light can be illuminated over a wide range. .

  Then, the monochromatic light emitting diode and the white light emitting diode are supplied to the light emitting diode by converting the translucent case, the electrode portion for introducing external power into the translucent case, and the current voltage introduced from the electrode portion. By arranging in a straight tube with an internal power supply, it can be used in offices as an alternative to fluorescent tubes, and each LED arranged in the straight tube can be arranged in 3 or 4 rows. By being arranged, light is uniformly mixed, and the VF of each light emitting diode is almost the same VF, so that it is easy to manufacture and has a long life. Further, the translucent case is formed in a cylindrical shape and includes a diffusing means for diffusing the light emitted from the light emitting diode, so that the light is diffused and reaches a wide range uniformly and is bright.

  It is a whole perspective view for description of the illuminating device of Example 1 of this invention.   It is a disassembled perspective view of this invention Example 1. FIG.   It is a front view of the LED board of Example 1 of this invention.   It is a block diagram of an embodiment of the present invention.   FIG. 4 is an explanatory diagram of illuminance and evaluation according to an embodiment of the present invention, where (a) the monochromatic light emitting diode is blue, (b) the monochromatic light emitting diode is red, and (c) the monochromatic light emitting diode is orange. (D) The case where the monochromatic light emitting diode is green.   It is data explanatory drawing of the illumination intensity which concerns on this invention Example, (a) When it is only a white light emitting diode, (b) It is the case of this invention Example of a white light emitting diode and a blue light emitting diode.   It is explanatory drawing of the fluorescent lamp type LED lighting tube of this invention Example 2, (a) A perspective view of the LED board used for a fluorescent lamp type LED lighting tube, (b) It is a disassembled perspective view of a fluorescent lamp type LED lighting tube.   It is sectional drawing of the fluorescent lamp type LED lighting tube of Example 2 of this invention.   It is the perspective view which notched a part for description of the LED lighting apparatus of Example 3 of this invention.   It is a disassembled perspective view of the LED lighting apparatus of Example 3 of this invention.

In general, when exposed to light of a specific wavelength, a person feels a color there. For example, there is a physicist's example that it is blue for light with a wavelength of 500 to 464 nm, green for 578 to 513 nm, orange for 620 to 592 nm, and red for 723 to 647 nm. Although there is no nature, there is no doubt that light of such a wavelength has a certain color recognition. And it has been known for a long time that when it comes to monochromatic light, the red color gives a dynamic and warm feeling, the blue color gives a cold feeling, and the light that seems to move away is quiet. It has been said in Goethe's era that it has an effect of resting, and it is known that in 2000 in Glasgow in the north of England, crime was drastically reduced by making the streetlight color blue. However, it has been found that illumination with monochromatic light feels creepy or the illuminance feels low.
Therefore, in the present invention, by combining a monochromatic light emitting diode with a white light emitting diode and enhancing the light of the monochromatic light emitting diode, it feels brighter than the actual illuminance, but it is not dazzling and feels the atmosphere and effect that a single color brings out. This is what we found. Hereinafter, the present invention will be described in detail based on examples.

  FIG. 1 is a perspective view of the lighting device 100 according to the first embodiment of the present invention configured as a security light, and is used by being attached to a vertical pole such as a utility pole. FIG. 2 is an exploded perspective view showing the internal structure. The LED lighting device 100 includes a main body, an LED board 10 in which a plurality of LED elements 30 are arranged in the main body, an internal power supply 40 that supplies current and voltage to the LED board 10, and external power to the internal power supply 40. And a translucent case 50 that is fitted and attached to the main body and irradiates the light of the plurality of LED elements 30 to the outside. FIG. 3 is a front view of the internal LED substrate 10, and the plurality of LED elements 30 are arranged between one monochromatic light emitting diode row 31 and another monochromatic light emitting diode row 31, and those monochromatic light emitting diode rows. The number of white light emitting diode rows 32 is less than 31. Here, the plurality of LED elements 30 are arranged in a single direction in a straight line or in a staggered manner so as not to impair the colors exhibited by the single color light emitting diode rows 31 of a specific color and the single color light emitting diode rows 31. The white light emitting diode rows 32 arranged so as to be sandwiched between the single color light emitting diode rows 31 are arranged so that a specific illumination area can be illuminated with the specific color. The LED elements 30 of the monochromatic light emitting diode rows 31 and 31 may emit light in a specific color excluding so-called fluorescent light colors such as daylight color, daylight white, white, warm white, and light bulb color. That is, the specific color is a specific color different from so-called white, and more preferably, for example, blue, red, orange or green. In particular, when the specific color is blue monochromatic light, blue monochromatic light is preferable because it does not feel too harsh and feels natural and psychologically acts to provide a crime prevention effect. Note that the LED elements 30 may be arranged in one direction, for example, may be arranged in a straight line, or may be arranged in a staggered pattern. When arranged in a staggered pattern, space can be saved. The LED element 30 of the white light emitting diode array 32 is, for example, a bullet-shaped resin-molded one or a box-shaped chip component type light emitting diode, and uses blue one-chip light emission rather than a three-primary-color chip type white light emitting diode. A white light emitting diode obtained by wavelength conversion of the diode is preferable. The reason for this is that the brightness, hue, and apparent brightness and feel of the light-emitting diodes are easily aligned, and there are significant advantages in terms of LED drive circuit design (structure) and cost. These light emitting diodes are arranged so that they can illuminate an illumination area at a certain distance from the light source. The fixed lighting area means, for example, a fixed space to be irradiated in the case of the security light of the first embodiment, and a desk or the like in the case of an indoor lighting device installed on the other side of the ceiling.

  With reference to FIGS. 1, 2, and 3, the monochromatic light-emitting diode array 31 and the white light-emitting diode array 32 are inside the translucent case 50 and mounted on the LED substrate 10. The LED lighting device 100 converts the main body, the LED board 10 on which the LED elements 30 are mounted on the surface side, the electrode part 20 for introducing external power into the LED board 10, and the current voltage introduced from the electrode part 20 And an internal power supply 40 that supplies the LED element 30 that is a light emitting diode. The LED board 10, the electrode part 20, and the internal power supply 40 are attached to the main body. The combination of Example 1 and the main body (without reference numerals) are made of synthetic resin of an opaque part that houses the LED substrate 10 and the internal power supply 40. The translucent case 50 is made of glass, polycarbonate, or the like whose inner surface is roughened at a portion that transmits light. The light transmitting portion of the light transmitting case 50 is provided with a diffusing means for diffusing the light emitted from the light emitting diodes 31 and 32. As the diffusing means, the inner surface or the outer surface may be roughened, such as a satin finish, or a diffusing material (filler) may be mixed in the material of the translucent case 50, as shown in FIG. Further, it is preferable to provide a substantially triangular lens means on the inner surface in the area A where the light emitted from the light emitting diode is emitted, since the color mixture is improved. The reason for this is that it is easy to obtain a synergistic effect of the relationship between the individual light emitting diodes to be mounted and the directly and indirectly reflected light in the resin translucent tube. In addition, if the LED shape of the blue bullet-type light-emitting diode is larger than that of the white light-emitting diode, or if the light-emitting diode is a button-type light-emitting diode rather than a bullet-type light-emitting diode, the blue light-emitting window frame size Since the LED emission may contribute to a wide range and wide viewing angle with the target color by increasing the height dimension, etc., the shape of the light source itself should be considered together with the shape of the translucent case 50 More effective.

  FIG. 4 is a block diagram of the first embodiment. In the first embodiment, the electrode unit 20 is a connector that allows the LED substrate 10 to be attached to and detached from the LED lighting device 100, and external power is introduced into the translucent case 50. The internal power supply 40 includes an AC-DC converter 41 and a current / voltage stabilizer 42 for converting external power into direct current to be supplied to the light-emitting diode rows 31 and 32. It is not limited to.

  The ratio of the monochromatic light emitting diode row 31 and the white light emitting diode row 32 is such that if the proportion of the monochromatic light emitting diode row 31 and the white light emitting diode row 32 is equal, the white diode row 32 absorbs the effect of that color, Features fade. FIG. 5 shows the situation. FIG. 5 shows the ratio of the light emitting diodes of the white light emitting diode array 32 and the monochromatic light emitting diode array 31 to how a person feels as a color image and whether the brightness is sufficient. The evaluations that have been discussed in groups of people are shown for each color. As a result, it is necessary to use more light emitting diodes for the monochromatic light emitting diode array 31 than the light emitting diodes of the white light emitting diode array 32. From this result, in most cases, the monochromatic light emitting diode array 31 has color characteristics, but it becomes dark in terms of brightness. In addition, as a feeling caused by the color, if it is too biased, the image is down and the impression is not good. Therefore, there is a need for a method of reproducing the ratio in pursuit of brightness while leaving a pleasant image feeling. Therefore, a white light emitting diode row 32 composed of a plurality of light emitting diodes and a plurality of monochromatic light emitting diode rows 31 larger than the white light emitting diode row 32 are arranged so as to be able to illuminate a certain illumination area. The ratio is most preferably twice or more.

The illuminance comparison shown in FIG. 6 is illuminance data (a) of light of only a white light emitting diode, and illuminance data (b) of light of a monochromatic (blue) light emitting diode and a white light emitting diode composite. Illuminance with a radius of 5 m was measured from a height of 5 m. The illuminance at a point just below 5m is almost the same lux. This brightness cannot be achieved with a monochromatic light emitting diode alone. It emits illuminance that can only be produced by white light emitting diodes, but the overall image sensation feels solidly monochromatic (blue).
Bright light that does not impair the characteristics of such monochromatic light emitting diodes seems to have an effect on human sensation that produces a better image than monochromatic light. Moreover, the effect which does not impair the characteristic of each color can also be anticipated simultaneously.
The LED lighting device 100 is supplied from an external power source (not shown), for example, a commercial power source of 100 V to the internal power source 40 via the electrode unit 20, converted into a direct current voltage, and then supplied to the LED substrate 10. The plurality of LED elements 30 mounted on 10 emit light, and emit light of the specific color as a whole and illuminate.

  FIG. 7 is a diagram showing a fluorescent lamp type LED illumination tube 200 according to the second embodiment of the present invention, and shows a case where the illumination device is configured as a fluorescent lamp straight tube. FIG. 7A shows an LED substrate 10 on which an internal power supply 40 is mounted. Monochromatic light emitting diode rows 31 are arranged on both sides of a white light emitting diode row 32. FIG. 7B is an exploded perspective view of the fluorescent lamp type LED lighting tube 200 according to the second embodiment. The electrode portion 20 is fixed to the base 21, the insulator 22, and external power to the inside of the translucent case 52. It is comprised with the metal terminals 23 introduced into. The feature of this fluorescent lamp type LED lighting tube 200 is that the LED substrate 10 to which the light emitting diode rows 31 and 32 are attached needs to be placed in the transparent case 52. The translucent case 52 has a diameter of about 3 cm, and the light emitting diode rows 31 and 32 accommodated in the translucent case 52 have a maximum of 3 rows in the shell type light emitting diode, and at most 4 rows in the chip type light emitting diode. is there. In the case of a bullet-type light emitting diode, if the same number of light emitting diode rows 31 and 32 are arranged in the longitudinal direction of the fluorescent lamp type LED fluorescent tube 200, the monochromatic light emitting diode rows 31 are arranged on both sides, and the white color is in the middle. The ratio of arranging the light emitting diode rows 32 is most preferable. However, it is not necessary to pay attention to the same number in the same row, and the middle white light emitting diode row 32 may have more or less ends in a lattice shape. In the chip type light emitting diode, there is no problem if the arrangement of the two white light emitting diode rows 32 in the middle is arranged at a ratio smaller than the number of the monochromatic light emitting diode rows 31 at both ends. In any case, the number of white light emitting diode rows 32 is not too large in proportion to the monochromatic light emitting diode row 31.

  FIG. 8 is a cross-sectional view of the fluorescent lamp type LED lighting tube 200 according to the second embodiment of the present invention. As described above, the LED element 30 is mounted on the front surface side of the LED substrate 10, and the internal power supply 40 is disposed on the back surface side of the LED substrate 10, so that the fluorescent lamp type LED lighting tube 200 is a straight tube. The LED board 10, the electrode unit 20, the LED element 30, and the internal power supply 40 are provided. In the portion A part where the light of the light emitting diode rows 31 and 32 of the light transmitting case 52 is transmitted, as shown in the A part structure, a substantially triangular lens means is provided on the inner surface to diffuse the light, or the light transmitting part 52 is transparent. A diffusion material (filler) may be mixed in the material of the light case 52. In this case, it is easy to obtain a synergistic effect of the relationship between the individual light emitting diodes to be mounted and the directly and indirectly reflected light inside the resinous translucent case, and the color mixture is improved, which is preferable. In addition, by deliberately changing the arrangement position with the external size and surface resin shape of the light emitting diode to be mounted, such as the lens shape of the shell type light emitting diode and the size and height of the light emitting window frame of the button type light emitting diode, LED light emission during actual use of LED illumination may contribute to wide viewing angle over a wide range.

  FIG. 9 is an overall perspective view of the LED lighting device according to the third embodiment of the present invention. The LED lighting device 300 according to the third embodiment includes the main body according to the first embodiment, the translucent case 50, and the fluorescent lamp type LED lighting tube 200 according to the second embodiment. It was. FIG. 10 is an exploded perspective view thereof. The fluorescent lamp type LED lighting tube 200 is the same as that described in the second embodiment including the electrode unit 20 for introducing external power into the inside. Maintenance and inspection are facilitated by using the fluorescent lamp type LED lighting tube 200, and it feels brighter than the actual illuminance, but it is not dazzling, and the atmosphere and effect that a single color, which is a specific color, can feel soft.

The VFs of the respective light emitting diode rows 31 and 32 arranged in the fluorescent lamp type LED lighting tube 200 which is a straight tube are substantially the same VF and are arranged in three rows. The reason why the light emitting diode rows 31 and 32 are mounted in a straight tube is practical because the light emitting appearance and the measured illuminance value are the most balanced.
For the purpose of arranging light emitting diodes of substantially the same VF, it is easy to keep the drive management for each mounted light emitting diode, that is, the applied current (IF) almost uniform, and the important light emitting conditions and products It is possible to contribute to the improvement of the quality. In order to obtain almost the same VF, of course, the specifications may be aligned. However, some white light emitting diode arrays 32 are whitened with fluorescent paint using blue light emitting diodes. If used, the VF with the blue light emitting diode will naturally have the same level of voltage value.

  The lighting device of the present invention feels brighter than the actual illuminance and feels the atmosphere and effects (warm / cold / perspective / etc.) That a single color brings out softly. It is useful for lighting in places where it is necessary, plant growing lights, lighting with improved visibility in tunnels, etc.

10 LED board 20 Electrode part 21 Electrode part base (metal part)
DESCRIPTION OF SYMBOLS 22 Electrode insulator 23 Electrode part terminal 30 LED element 31 Monochromatic light emitting diode array 32 White light emitting diode array 40 Internal power supply 41 AC-DC converter 42 Current voltage stabilizer 50 Translucent case 52 Translucent case (Example 2)
100 LED lighting device (Example 1 crime prevention light)
200 Fluorescent Lamp Type LED Lighting Tube (Example 2 Fluorescent Lamp Type LED Lighting Device)
300 LED lighting device (Example 3 crime prevention light)

Claims (6)

A substrate,
An electrode for introducing external power into the substrate;
A plurality of LED elements mounted on the illumination direction side of the substrate;
An LED lighting device comprising an internal power supply that converts current voltage introduced from the electrode portion and supplies the converted voltage to the LED element,
The plurality of LED elements, and the monochromatic light-emitting diode array of a plurality of rows of a specific color that is arranged in one direction, the monochromatic light-emitting diode rows of the plurality of rows in order not to impair the color exhibited by the single-color light-emitting diode columns A white light emitting diode row in which a number of white LED elements less than the number of LED elements are arranged in the one direction in a straight line or staggered manner between the single color light emitting diode row and another monochromatic light emitting diode row; An LED illumination device characterized in that it can illuminate a specific illumination area with the specific color.   The LED lighting device according to claim 1, wherein the monochromatic light emitting diode array emits blue monochromatic light. Monochromatic light-emitting diode columns, red color or LED lighting apparatus according to claim 1, wherein the emitting green monochromatic light. LED lighting device according to any one of claims 1 to 3, characterized in that it comprises a light shell for diffusing the light emission of the plurality of LED elements to the outside. It is a fluorescent lamp type LED lighting tube that can be directly mounted on a socket of an existing fluorescent lighting tube,
A substrate, a JIS standard base that can be directly mounted in a socket of an existing fluorescent lamp illumination tube by introducing external power into the substrate, and a plurality of LED elements mounted on the illumination direction side of the substrate,
An internal power supply for converting the current and voltage introduced from the base and supplying the LED element to the LED element; and a translucent cylinder that diffuses the light emitted from the plurality of LED elements to the outside.
Wherein the order in which the plurality of LED elements, and the monochromatic light-emitting diode array of a plurality of rows of a specific color which are arranged in the longitudinal direction of the fluorescent LED light tube, does not impair the color exhibited by the single-color light emitting diode rows plurality The number of white LED elements smaller than the number of LED elements in the single color light emitting diode line of the line is linearly or staggered between the single color light emitting diode line and the other single color light emitting diode line in the longitudinal direction. fluorescent LED light tube, characterized in that to be able to illuminate for a certain illumination area in the specific color and composed the white light-emitting diode array disposed. An LED illumination apparatus comprising the fluorescent lamp type LED illumination tube according to claim 5 .

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