JP2008300117A - Light emitting diode lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting diode lighting system capable of continuously changing a correlation color temperature of output light without degrading an average color rendering index (Ra). <P>SOLUTION: This light emitting diode lighting system is provided with: light emitting diode chips 5a arranged on a board; a phosphor film formation plate 4 having a glass plate 2 and a plurality of phosphor films 3a-3c formed on the glass plate, and arranged oppositely to the board; and micro linear actuators 8 and 10 relatively moving at least either of the phosphor film formation plate 4 and the board to position the light emitting diode chips to optically face the phosphor films. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light emitting diode illumination device.

Conventionally, a duty ratio of a rectangular wave pulse applied to each of the one or more monochromatic light emitting diodes for monochromatic light emission and one or more white light emitting diodes for white light emission is applied to each of the light emitting diodes to control light emission of the monochromatic light emitting diode. Technology that changes the correlated color temperature by controlling the ratio of the light output of the monochromatic light emitting diode and the white light emitting diode by separately controlling the power supply of the light emitting diode and the second power source that controls the light emission of the white light emitting diode. (For example, refer to Patent Document 1).
JP 2005-1000079 A

  However, in this variable color light emitting diode lighting fixture, the correlated color temperature is changed by controlling the duty ratio of the rectangular wave pulse applied to the single color light emitting diode and the white light emitting diode, respectively. There is a problem that the correlated color temperature of the emitted light cannot be continuously changed without decreasing the average color rendering index (Ra).

  In addition, since two types of light emitting elements, a single color light emitting diode for monochromatic light emission and a white light emitting diode for white light emission, are used, there is a problem that inventory management of the light emitting diode becomes troublesome.

  The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a light emitting diode illumination capable of continuously changing the correlated color temperature of output light without reducing the average color rendering index (Ra). Providing equipment.

  A light-emitting diode illuminating device according to claim 1 comprises: a light-emitting diode chip disposed on a substrate; a transparent plate and a plurality of phosphor films formed on the transparent plate; A phosphor film forming plate; and a moving device for relatively moving at least one of the phosphor film forming plate and the substrate so that a light emitting diode chip is optically opposed to the phosphor film. It is characterized by being.

  In the light-emitting diode illuminating device according to claim 2, light emission of the light-emitting diode chip is blue light or ultraviolet light, and the phosphor film forming plate includes a yellow light-emitting phosphor film having a required width band, and the yellow light-emitting phosphor film A plurality of light emitting diodes, each having a required width band-like second yellow light emitting phosphor film having a different light output and a required width band-shaped red mixed yellow light emitting phosphor film formed by mixing a yellow light emitting phosphor with a red light emitting phosphor. It is characterized by being juxtaposed in parallel with the array of chips.

  In the light-emitting diode illuminating device according to claim 3, the light emission of the light-emitting diode chip is blue light or ultraviolet light, the phosphor film forming plate is a rectangular yellow light-emitting phosphor film, and the yellow light-emitting phosphor film and light output A second rectangular yellow light emitting phosphor film having a different color and a rectangular red mixed yellow light emitting phosphor film obtained by mixing a yellow light emitting phosphor with a red light emitting phosphor are arranged in a matrix for each light emitting diode chip. It is characterized by having installed.

  The light-emitting diode illuminating device according to claim 4 is characterized in that the phosphor film is formed on the facing surface of the transparent plate facing the substrate.

  According to the light-emitting diode illuminating device according to claim 1, the emitted light from the light-emitting diode chip is not directly emitted as output light, but the emitted light from the light-emitting diode chip is formed by a plurality of phosphor films having different emission colors. Since these are converted into the required light color and then emitted as output light, the plurality of phosphor films are pre-configured so that the correlated color temperature of the emitted color continuously changes, and the mobile device performs fluorescence. Correlation color of output light emitted from these phosphor films by sequentially moving one of the body film forming plate and the substrate and sequentially selecting the phosphor films excited by the light emitted from the light emitting diode chip The temperature can be changed continuously.

  Further, by configuring the plurality of phosphor films in advance so that the average color rendering index (Ra) of the emitted color does not change, the average color rendering index (Ra) varies for each phosphor film. Can be prevented or suppressed.

  According to the light emitting diode illuminating device of claim 2, yellow light is emitted as the phosphor film excited by the emitted light of the light emitting diode chip by relatively moving one of the phosphor film forming plate and the substrate by the moving device. When the phosphor film is selected, the yellow phosphor is excited by blue light or ultraviolet light of the light emitting diode chip to emit yellow light. Further, this yellow light is mixed with blue light or ultraviolet light of the light emitting diode chip and output as white light or slightly yellowish white light.

  Further, when a thin yellow light emitting phosphor film having a thickness different from that of the yellow light emitting phosphor film is selected as the second yellow light emitting phosphor film, the blue light of the light emitting diode chip is also used in this thin yellow light emitting phosphor. Excited by light or ultraviolet light, yellow light is emitted, synthesized with blue light, etc., and output as white light. However, since this thin yellow light emitting phosphor film is thinner than the yellow light emitting phosphor film, the amount of yellow light is reduced accordingly. For this reason, the output light is white light with a slight bluish tinge. Alternatively, even when the amount of the yellow phosphor is small, the above effects are obtained.

  Furthermore, when a red mixed yellow phosphor film forming plate is selected, it is excited by blue light or ultraviolet light from the light emitting diode chip to emit reddish yellow light, which is converted into blue light or ultraviolet light from the light emitting diode chip. Since they are mixed, a slightly reddish white light, that is, a light bulb color is output.

  As described above, according to the present invention, a plurality of phosphor films are sequentially and selectively made to emit light so that white light or slightly yellowish white light is bluish white light and slightly reddish. The correlated color temperature of white light can be continuously changed up to white light (bulb color).

  According to the invention of claim 3, as in the invention of claim 2, it is excited by the emitted light of the light-emitting diode chip by relatively moving one of the phosphor film forming plate and the substrate by the moving device. As the phosphor film, any one of a yellow phosphor film forming plate, a thin yellow phosphor film, and a red mixed yellow phosphor film forming plate can be appropriately selected.

  Accordingly, the correlated color temperature can be continuously changed from white light or white light slightly yellowish to white light slightly bluish and white light slightly reddish.

  According to the invention which concerns on Claim 4, since the fluorescent substance film is formed in the opposing surface, ie, inner surface, of the transparent board which opposes a board | substrate, this fluorescent substance film can be protected by the outer surface of a transparent board.

  In addition, the phosphor film directly faces the light emitting diode chip without passing through the transparent plate body, and the distance from the light emitting diode chip is shortened, so that the amount of light emitted from the phosphor film can be increased accordingly. , Luminous efficiency can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part in several attached drawing.

  FIG. 1 is a plan view of a light-emitting diode illuminating device 1 according to an embodiment of the present invention, FIG. 2 is an end view of a cut portion taken along line II-II in FIG. 1, and FIG. .

  As shown in FIGS. 1 and 2, the light-emitting diode illuminating device 1 includes a phosphor film-forming plate 4 in which a phosphor film 3 is formed on a glass plate 2 which is an example of a transparent plate, and a substrate on which a plurality of light-emitting diode devices 5 are mounted. 6. A moving device 7 is provided.

  As shown in FIG. 1, the phosphor film forming plate 4 is provided on the inner surface (lower surface in FIG. 2) of a rectangular transparent glass plate 2 that is long in the horizontal direction in FIG. For example, three types of phosphor films 3 are juxtaposed in the longitudinal direction of the glass plate 2 by three columns 3a, 3b, 3c.

  From the side close to the light emitting diode device 5, the phosphor film 3 is, for example, a strip-shaped yellow phosphor film 3 a having a predetermined width and length, the strip-shaped thin yellow phosphor film 3 b, and the strip-shaped red mixed yellow fluorescence. The body membrane 3c is sequentially arranged in this order.

  Each of these phosphor films 3 a to 3 c is formed so that the band-like width and length thereof are substantially equal to each other, and these widths are substantially equal to the width of each light emitting diode device 5. In addition, the lengths of the phosphor films 3a to 3c are a series of a plurality of light emitting diode devices 5, 5,... Arranged in a short equal direction (the vertical direction in FIG. 1) of the glass plate 2 at a predetermined equal pitch. It is formed approximately equal to the length in the direction.

  The yellow phosphor film 3a is formed by forming a yellow phosphor such as a YAG phosphor that emits yellow light by blue (or ultraviolet) light emission of the light-emitting diode device 5 in a band shape with a predetermined width, length, and film thickness. ing.

  The thin yellow phosphor film 3b is formed thinner than the yellow phosphor film 3a. The red mixed yellow phosphor film 3c is configured by containing a predetermined amount of a red phosphor that emits red light by blue light emission of the light emitting diode device 5 in the yellow phosphor.

  These three kinds of phosphor films 3a to 3c are correlated with each other without any change in the color rendering index (Ra) of the luminescent color emitted when the phosphor films 3a to 3c are excited by the blue light from the light emitting diode device 5. It is configured in advance so that the color temperature changes continuously.

  The phosphor film 3 includes these three kinds of phosphor films 3a to 3c as one set, and a plurality of sets are arranged in the longitudinal direction of the glass plate 2 according to the number of columns of the light-emitting diode device 5 (the horizontal direction in FIG. 1). They are arranged in parallel at a predetermined equal pitch. Further, the glass plate 2 is provided with a band-like transparent portion 2a having a predetermined width and length that does not form a phosphor film between the respective phosphor films 3a to 3c and at the left end in FIG. The phosphor film 3 is arranged in parallel.

  Then, as shown in FIG. 1, the moving device 7 has an upper micro linear actuator 8 arranged substantially parallel to the upper end portion of the glass plate 2, for example, in the drawing, and the movable portion 8 a is fixed through the joint 9. The lower micro linear actuator 10 is juxtaposed in parallel with the lower end of the glass plate 2, and the movable part 10 a is fixed via the joint 11.

  The pair of upper and lower micro linear actuators 8 and 10 are, for example, piezoelectric elements such as PZT, and are substantially thin disk-shaped drive portions 8b and 10b and substantially perpendicular to the central portion of one surface of the drive portions 8b and 10b. For example, thin cylindrical shafts 8c and 10c fixed upright and fixed, for example, nut-shaped movable portions 8a and 10a fitted to the shafts 8c and 10c so as to be capable of reciprocating in the axial direction and being held at their stationary positions. ing. The shafts 8c and 10c are arranged in parallel to the upper and lower sides of the glass plate 2, respectively.

  Further, the ends of the shafts 8c and 10c are fitted into fitting recesses of the upper and lower stoppers 12 and 13, respectively, via vibration isolating portions 8d and 10d made of rubber or the like. These upper and lower stoppers 12 and 13 are fixed to an inner surface of a main body case (not shown) of the light-emitting diode illuminating device 1 and a fixing member (not shown) fixed to the inner surface of the main body case.

  Each drive unit 8b, 10b is electrically connected to a control device (not shown) which is an example of a control unit via signal lines L, L,. This control device individually gives a pulse signal for controlling a predetermined drive frequency and drive voltage to each of the drive units 8b and 10b, thereby causing each drive unit 8b and 10b to generate ultrasonic vibration of a predetermined frequency, This is applied to the shafts 8c and 10c. Thereby, each movable part 8a, 10a fitted to these shafts 8c, 10c in a nut shape moves forward or backward in the axial direction, respectively. The moving direction of the forward movement or the backward movement and the movement distance are controlled by the pulse waveform, pulse train, and number of pulses given to the drive units 8b and 10b, and reciprocate at a high speed in the longitudinal direction (X direction) of the glass plate 2. , Can be stopped at any position. Each movable part 8a, 10a is firmly held on each shaft 8c, 10c at the stationary position when stationary.

  These micro linear actuators 8 and 10 are used, for example, as actuators for autofocus devices, zoom devices, stabilizers, etc. of mobile phone cameras. For example, TULA50 (trade name) of Techno Hands Co., Ltd. is used. be able to. In this TULA 50, the diameters of the driving portions 8b and 10b are 6 mm, the thickness is 0.5 mm, the lengths of the shafts 8c and 10c are 16.5 mm, the driving frequency is 40 to 80 KHz, the driving voltage is 10 to 30 V, the thrust is 10 to 45 gf, and the stroke 3 -20 mm, maximum moving speed 35 mm / s.

  As shown in FIG. 1, the light-emitting diode device 5 is arranged on a substrate 6 that is substantially the same shape and size as the rectangular glass plate 2, in a portion facing each transparent portion 2 a of the glass plate 2 in the vertical direction in FIG. 1. They are arranged concentrically at the required equal pitch.

  As shown in FIG. 3, the substrate 6 is formed of aluminum (Al), nickel (Ni), or the like having heat dissipation and rigidity, and a white surface having electrical insulation on one surface (the upper surface in FIGS. 2 and 3). An electrically insulating layer 6a such as glass epoxy resin is formed.

  Further, a pair of circuit patterns (on the cathode (−) side and on the anode (+) side) are formed on the electrical insulating layer 6a by an alloy of copper (Cu) and nickel (Ni) or gold (Au) plating of this alloy. Wiring patterns) 7a and 7b are formed, and these circuit patterns 7a and 7b are provided with anode and cathode electrodes of, for example, blue light emitting (or ultraviolet light emitting) light emitting diode bare chip 5a fixed on the electrical insulating layer 4a. Are electrically connected by a bonding wire 5b.

  On each light emitting diode bare chip 5a, a translucent silicon resin is concentrically laminated with a predetermined width to form a light transmitting resin portion 5c, and the light emitting diode bare chip is formed by the light transmitting resin portion 5c. 5 a is fixed on the substrate 6. On both sides of the translucent resin portion 5c in the width direction, a pair of left and right side walls 5d, 5d as reflecting portions are formed on the substrate 6 with a white resin or the like so as to border the outer surfaces of both sides.

  The pair of side walls 5d, 5d forms an inclined surface S that gradually expands toward the glass plate 2 on the opposing surface (inner side surface). Is formed on the reflection surface that reflects the light toward the glass plate 2 side.

  Next, the operation of the light emitting diode illumination device 1 will be described.

  First, when a required direct current (DC) voltage is applied to each light emitting diode bare chip 5a from the lighting device (not shown) via the circuit patterns 7a and 7b, each light emitting diode bare chip 5a emits blue light. The blue light is transmitted through the translucent resin portion 5 c and emitted to the phosphor film forming plate 4.

  At this time, when the transparent portions 2a of the phosphor film forming plate 4 are positioned substantially concentrically on each column of the light emitting diode devices 5, the blue light from each light emitting diode device 5 is transmitted through the transparent portions 2a. Then, it is radiated to the outside as it is.

  However, due to the drive pulses applied to the drive units 8b and 10b of the pair of upper and lower micro linear actuators 8 and 10, the movable units 8a and 10a move the shafts 8c and 10c by the same distance in the same direction, and the light emitting diode device. 5 on the yellow phosphor film 3a of the phosphor film-forming plate 4 and concentrically move to each position, the blue light from each light-emitting diode device 5 is converted into each yellow phosphor film when held in that position. It enters into 3a. Therefore, each yellow phosphor film 3a is excited by blue light and emits yellow light.

  Further, the yellow light emission is mixed and synthesized with the blue light emission and output to the outside as white light.

  Further, the thin yellow phosphor film 3b of the phosphor film forming plate 4 is moved on each column of the light emitting diode device 5 by the movable parts 8a and 10a of the pair of upper and lower micro linear actuators 8 and 10, and is held concentrically. Then, the blue light from each light-emitting diode device 5 enters the thin-walled yellow phosphor film 3b, and here, yellow light is emitted in the same manner as the yellow phosphor film 3a.

  However, since the thin yellow phosphor film 3b is thinner than the yellow phosphor film 3a, the amount of yellow light emission decreases accordingly. For this reason, white light slightly bluish is emitted from the thin yellow phosphor film 3b to the outside.

  Further, the phosphor film forming plate 4 is moved in the longitudinal direction (X direction) by the pair of upper and lower micro linear actuators 8 and 10, and the red mixed yellow of the phosphor film forming plate 4 is arranged on each column of the light emitting diode devices 5. When the phosphor film 3c is positioned substantially concentrically, the blue light from each light emitting diode device 5 is incident on the red mixed yellow phosphor film 3c, where a slightly reddish yellow light is emitted and the blue light is emitted. Synthesized with light.

  For this reason, the red mixed yellow phosphor film 3c emits a slightly reddish white light, that is, a light bulb color.

  Therefore, according to the light-emitting diode illuminating device 1, since the plurality of phosphor films 3a to 3c are preliminarily configured so that the correlated color temperature of the emission color continuously changes, the phosphor films 3a to 3c are configured in advance. The correlated color temperature of the output light emitted from 3c can be continuously changed.

  Further, by configuring the plurality of phosphor films 3a to 3c in advance so that the average color rendering index (Ra) of the emitted color does not change, the change of the average color rendering index (Ra) is prevented or Can be suppressed.

  The phosphor films 3a to 3c are excited by the light emitted from the light-emitting diode chip to emit yellow light, and the thin-walled yellow light-emitting phosphor film 3b having a smaller thickness than the yellow light-emitting phosphor film 3b. Since it is composed of red mixed yellow phosphor film 3c that emits reddish white light (bulb color), the correlated color temperature continuously changes from white light through slightly bluish white light to the color of the bulb. Can be made.

  4 is a partially cutaway plan view of a light-emitting diode illuminating device 1A according to a second embodiment of the present invention, and FIG. 5 is a partially cutaway end view of a cut portion taken along line VV of FIG.

As shown in FIG. 4, the light-emitting diode illuminating device 1 </ b> A emits light from each of the three types of strip-like phosphor films 3 a to 3 c of the phosphor film-forming plate 4 in the light-emitting diode illuminating device 1 shown in FIGS. 1 and 2. The rectangular phosphor films 3a ₁ , 3b ₁ , 3c ₁ are formed in the same shape and size as the planar shape of the diode device 5, and each light emitting diode device 5 is arranged in a matrix around the position of the corresponding transparent portion 2 a _1. Furthermore, it has a main feature in that the moving device 7A is configured so that the phosphor film forming plate 4 can reciprocate both in the longitudinal direction (X direction) and in the short direction (Y direction). .

That is, a phosphor film formed plate 4 as shown in Figure 4, the corresponding positions of rectangles each LED device 5 is projected to the glass plate 2 in a vertical direction is formed on a transparent portion 2a _1, each of these transparent portions 2a on the right side in ₁ of FIG. 4, rectangular yellow phosphor film 3a ₁ disposed respectively in the drawing below the yellow phosphor layer 3a _1, disposed a thin yellow phosphor layer 3b _1, further, the in the figure the left side of the thin yellow phosphor layer 3b _1, are disposed red mixture yellow phosphor film 3c _1, respectively. These phosphor films 3a _{1 to} 3c ₁ each constitute one cell of the matrix arrangement.

  The moving device 7A replaces the stoppers 12 and 13 of the pair of upper and lower micro linear actuators 8 and 10 for moving in the X direction shown in FIG. 1 with a pair of upper and lower slidable stoppers 12A and 13A, respectively. In addition, there is a feature in that a pair of left and right micro linear actuators 14 and 15 for driving in the Y direction and a pair of left and right large stoppers 16 and 17 are newly provided.

  That is, the pair of upper and lower large stoppers 12A and 13A support the vibration isolating portions 8d and 10d of the pair of upper and lower micro linear actuators 8 and 10 in the X-axis direction at both ends in the X direction, respectively, Each cell is slidably supported in the direction. Stopper projections St and St for restricting the sliding range in the Y direction of the vibration isolating portions 8d and 10d to the left and right cells in the figure are formed at both ends in the Y-axis direction, respectively.

  Then, a pair of left and right micro linear actuators 14 and 15 are newly disposed at both left and right ends of the phosphor film forming plate 4. These micro linear actuators 14 and 15 are also configured in the same manner as the pair of upper and lower micro linear actuators 8 and 10, and are provided with large stoppers 16 and 17.

  That is, the pair of left and right micro linear actuators 14 and 15 have driving parts 14b and 15b made of PZT, movable parts 14a and 15a, shaft parts 14c and 15c, and vibration isolating parts 14d and 15d, respectively, and the left movable part 14a. Is fixed to the left end of the phosphor film forming plate 4 via a joint 18, and the right movable portion 15 a is fixed to the right end of the phosphor film forming plate 4 via a joint 19.

  The left and right micro linear actuators 14 and 15 are electrically connected to the control device via their signal lines L and L, and the phosphor film forming plate 4 is connected to the Y direction from the control device. The same driving pulse for driving is provided.

  4, the pair of left and right large stoppers 16 and 17 support the vibration isolating portions 14d and 15d of the pair of left and right micro linear actuators 14 and 15 on both ends in the Y direction of the phosphor film forming plate 4, In the X direction, it is configured to be slidably supported one cell left and right.

Accordingly, the phosphor film forming plate 4 is moved to the corresponding position of each light emitting diode device 5 by driving the movable portions 8a, 10a, 14a, 15a of the pair of micro linear actuators 8, 10, 14, 15 in the vertical and horizontal directions. A certain transparent portion 2a ₁ can be repeatedly moved in the order of, for example, yellow phosphor film 3a ₁ → thin yellow phosphor film 3b ₁ → red mixed yellow phosphor film 3c ₁ → corresponding position 2a ₁ or vice versa. .

For this, the blue light from the light emitting diode device 5, from the white light by each yellow phosphor film 3a _1, through the white light tinged slightly bluish by each thin yellow phosphor layer 3b _1, slightly reddish The correlated color temperature can be continuously and simultaneously changed without changing the average color rendering index Ra of the output light in order to the white light having a color or vice versa.

  In the above embodiment, the case where the phosphor film forming plate 4 is moved has been described, but the substrate 6 may be moved.

The phosphor film 3, the yellow phosphor layer 3a, 3a _1, the thin yellow phosphor layer 3b, 3b _1, red mixed yellow phosphor film 3c, has been described to configure a 3c _1, the present invention these The phosphor film is not limited to the phosphor film, and may be replaced with a phosphor film that emits other color light by the blue light (or ultraviolet light) of the light emitting diode device 5.

  Furthermore, although the light emitting diode device 5 has been described with respect to the case where the light emitting diode chip 5a is directly mounted on the substrate 6, the present invention may be one in which a bullet-shaped light emitting diode is mounted on the substrate 6.

  Moreover, although the case where the micro linear actuators 8, 10, 14, and 15 were used as the moving devices 7 and 7A has been described, a rack and a pinion may be used instead.

The top view of the light-emitting-diode illuminating device which concerns on the 1st Embodiment of this invention. FIG. 2 is an end view of a cut portion taken along line II-II in FIG. 1. The III section enlarged view of FIG. The partially notched top view of the light emitting diode illuminating device which concerns on the 2nd Embodiment of this invention. FIG. 5 is a partially cutaway end view of a cut portion taken along line VV of the light-emitting diode illuminating device shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1A ... Light-emitting diode illuminating device, 2 ... Glass plate, 2a ... Transparent part, 3 ... Phosphor film, 3a, 3a ₁ ... Yellow phosphor film, 3b, 3b ₁ ... Thin-walled yellow phosphor film, 3c, 3c ₁ ... red mixed yellow phosphor film, 3d, 3d ₁ ... transparent part, 4 ... phosphor film forming plate, 5 ... light emitting diode device, 5a ... light emitting diode chip, 6 ... substrate, 7, 7A ... moving device, 8, 10 , 14, 15 ... micro linear actuator, 8a, 10a, 14a, 15a ... movable part, 8b, 10b, 14b, 15b ... drive part, 9, 11, 18, 19 ... joint, 12, 13 ... stopper, 12A, 13A , 16, 17 ... Large stopper.

Claims (4)

A light emitting diode chip disposed on the substrate;
A phosphor plate having a transparent plate and a plurality of phosphor films formed on the transparent plate, and disposed opposite to the substrate;
A moving device for relatively moving at least one of the phosphor film forming plate and the substrate so that a light emitting diode chip is optically opposed to the phosphor film;
A light-emitting diode illuminating device comprising: The light emission of the light emitting diode chip is blue light or ultraviolet light,
The phosphor film forming plate includes a yellow light-emitting phosphor film having a required width band, a second yellow light-emitting phosphor film having a required width band having a light output different from that of the yellow light-emitting phosphor film, and red light emission to the yellow light-emitting phosphor. 2. The light emitting device according to claim 1, wherein a red mixed yellow light emitting phosphor film having a required width band formed by mixing phosphors is arranged substantially in parallel with a row arrangement of a plurality of light emitting diode chips. Diode lighting device. The light emission of the light emitting diode chip is blue light or ultraviolet light,
The phosphor film forming plate is composed of a rectangular yellow light emitting phosphor film, a second rectangular yellow light emitting phosphor film having a light output different from that of the yellow light emitting phosphor film, and a red light emitting phosphor mixed with the yellow light emitting phosphor. 2. The light emitting diode illuminating device according to claim 1, wherein the rectangular red mixed yellow light emitting phosphor film is arranged in a matrix for each light emitting diode chip. 4. The light-emitting diode illuminating device according to claim 1, wherein the phosphor film is formed on a facing surface of a transparent plate facing the substrate.

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