JPH09257521A - Meter for vehicle and light emitting diode unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of part items of the whole of parts to be used, and to lower the cost, and to improve the design. SOLUTION: Lighting control of plural LED 20-1 to 20-5 is performed by color divided lead base parts 81B, 82G, 83R corresponding to plural colored LED chips 100R, 100B, 100G and common lead base parts 91C, 92C, 93C, 94C, 95C common to the color change lead base parts 81B, 82G, 83R, and while desirable color light can be lighted by time sharing. Accumulation density of length (pitch) between the plural LED 20-1 to 20-5 and the number or the like is decided by the color divided lead base parts 81B, 82G, 83R, which are integrated with each other by the package resin, the accumulation density can be desirably set by flexibly forming the color divided lead base parts 81B, 82G, 83R or curving or bending them.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle meter applicable to a speedometer, a tachometer, etc. of an automobile and a light emitting diode (hereinafter, simply referred to as "LED") constituting the vehicle meter. Use,
The present invention relates to a vehicle meter in which a scale, a pointer and the like can freely emit light, and an LED unit which is a light source used for the meter.

[0002]

2. Description of the Related Art As a conventional speedometer for a vehicle, a magnetic type speedometer is generally used. This speedometer has a dial, a pointer, and a drive unit for rotationally driving the pointer to display a speed. It is equipped with a pointer to display the speed on the dial scale.

On the other hand, a vehicle meter such as a speedometer has a function of transmitting man-machine information such as a vehicle speed, and also acts as a component of an interior of the vehicle. And
Vehicle meters occupy the main part of the instrument panel, which is the most noticeable part of the driver, and its design is also important.In recent years, various meters themselves have been created due to the diversification of user's taste and sensitivity. There have been various attempts such as the configuration of the above and their arrangement.

Further, it is preferable that the vehicle meter such as the speedometer is arranged as far as possible from the position of the eyes of the driver in consideration of hyperopia of middle-aged and elderly people.

[0005]

However, the conventional vehicular meter has a complicated mechanical structure, and there is room for improvement in terms of maintenance and display accuracy in consideration of wear of mechanical parts due to use. is there. Further, the design of the conventional vehicle meter is limited to that at the time of manufacture, and the design cannot be changed according to the individual taste of the user. Further, the conventional design including the dial and the pointer as a mechanical component cannot meet the diversified taste of the user, and there is room for improvement in terms of design.

Since the conventional vehicle meter requires a space for the drive mechanism, the meter panel requires a certain depth and cannot be made thin. Therefore, the degree of freedom in designing the meter panel is reduced accordingly, and there is room for improvement in terms of design. In addition, for the same reason, it is not possible to increase the distance between the vehicle meter and the position of the eyes of the driver, and there is room for improvement in terms of visibility when considering hyperopia of middle-aged and elderly people.

Further, in the commercially available LED, it is not possible to express an arbitrary color tone for each unit unless three LEDs of three primary colors, red LED, blue LED and green LED, are arranged in one unit, so that it is rich in color. When it comes to such expressions, LE
Although it is necessary to increase the mounting density of D, it is difficult to increase the mounting density in reality, and the designability cannot be improved. In addition, the number of parts is increased and the product yield is not good. And in the conventional LED, red LED, blue LED and green LED of three primary colors are included in one unit.
If the contour of the LED is clear because of the arrangement of the, the designability may be impaired.

[0008] Therefore, an object of the present invention is to provide a vehicle meter and an LED unit which can reduce the number of parts of the entire applied part, reduce the cost thereof, and improve the design.

[0009]

According to a first aspect of the present invention, there is provided a vehicle meter in which a substantially rectangular surface is used as a display surface of the vehicle meter, and a large number of light guide portions are provided, and light is emitted from one end of the light guide portions in the longitudinal direction. And a plurality of LEDs formed by sealing LED chips of a plurality of colors and connected in a specific direction, and connecting the plurality of connected LEDs, and Color-specific lead bases arranged in parallel between the connected LEDs and provided for the plurality of integrated colors;
An end portion is arranged at a position adjacent to the integrated lead base portions to form a common lead base portion corresponding to the LED chips of a plurality of colors of the plurality of LEDs.

A vehicle meter according to a second aspect of the present invention is a light meter in which a plane having one end in the length direction wider than the other end has a substantially trapezoidal shape, and one end in the length direction is on the outer peripheral side and the other end is on the inner peripheral side. And a light source that emits light from one end of the light guide in the length direction, and the plurality of LEDs are formed by sealing LED chips of a plurality of colors and connecting the light sources in a specific direction.
And a plurality of color-specific lead bases that connect the plurality of connected LEDs and are arranged substantially in parallel between the connected LEDs and that are provided for the plurality of integrated colors. The end portions are arranged at positions adjacent to the plurality of lead base portions to form a common lead base portion corresponding to the LED chips of a plurality of colors of the plurality of LEDs.

According to a third aspect of the vehicle meter, the common lead base portion is arranged substantially at right angles to the plurality of color lead base portions according to the first or second aspect.

According to a fourth aspect of the present invention, there is provided a vehicle meter, one for the plurality of color-specific lead bases according to any one of the first to third aspects and two for the common lead bases.
The LED chips are arranged individually.

According to a fifth aspect of the present invention, there is provided a vehicle meter in which the lead base portion for each color and the common lead base portion on which the LED chip according to any one of the first to third aspects is arranged form a recess hole. In the substantially central portion thereof, one LED chip is arranged for any of the plurality of color-specific lead bases and two LED chips are arranged for the common lead base.

According to a sixth aspect of the present invention, there is provided a vehicle meter according to any one of the first to fifth aspects, further including the LE.
D, covering the entire package resin facing the top of the package resin that seals the LED chip, and
It has a light-scattering means for making the light emission within a predetermined angle range from the emission central axis of D semitransparent and scattered.

According to a seventh aspect of the present invention, there is provided an LED unit in which LED chips of a plurality of colors are sealed and a plurality of LEDs arranged in a specific direction are connected to each other, and the plurality of connected LEDs are connected to each other, and the connection is made. And a lead base portion for each color, which is arranged substantially in parallel between the LEDs and is provided for each of the plurality of integrated colors.
An end portion is arranged at a position adjacent to the plurality of integrated lead base portions, and a common lead base portion is provided in common corresponding to LED chips of a plurality of colors of the plurality of LEDs.

According to an eighth aspect of the present invention, in the LED unit, the common lead base portion is arranged substantially at right angles to the plurality of color-based lead base portions.

According to a ninth aspect of the present invention, there is provided an LED unit, one for the plurality of color-specific lead bases according to the seventh or eighth aspect and two for the common lead bases.
A D chip is arranged.

According to a tenth aspect of the present invention, in the LED unit, the color-specific lead base portion and the common lead base portion, on which the LED chip according to the seventh or eighth aspect is arranged, form a concave hole, and a substantially central portion thereof. One for any of the plurality of color-based lead bases and two for the common lead base.
The LED chips are arranged individually.

[0019]

Embodiments of the present invention will be described below.

FIG. 1 is a front view showing an entire vehicle meter to which the vehicle meter according to the embodiment of the present invention is applied, and FIG. 2 is a plan view showing a speedometer as a vehicle meter according to the embodiment of the present invention. FIG. 3 is a plan view showing a main part of the vehicle meter according to the embodiment of the present invention. FIG. 4 is an exploded perspective view showing a main part of the vehicle meter according to the embodiment of the present invention.
FIG. 5 is an end view taken along the line AA of FIG. 2 showing the vehicle meter of the embodiment of the present invention by cutting it in the radial direction. FIG. 6 is a partial plan view showing a usage state of the speedometer as the vehicle meter according to the embodiment of the present invention.

In FIGS. 1 and 2, a vehicle meter of the present embodiment is a speedometer, tachometer, fuel meter,
It is embodied in a meter panel 1 in which a water temperature gauge and the like are appropriately arranged, and particularly embodied in an analog speedometer 10. This speedometer 10
The left-turn display unit 2 and the right-turn display unit 3 and other various display units 4a, 4b, 4c, 4d are arranged at a predetermined position on the meter panel 1 as a substantially fan-shaped plane, and the speedometer 10 is provided.
A speed display scale is formed by engraving or printing numbers indicating the speed at regular intervals on the outer circumference of the. A visible light LED (not shown) that emits a predetermined color is provided inside the speed display scale of the speedometer 10 for displaying the speed display scale. As a result, a plurality of pointers 13 having a flat and slender trapezoidal shape are connected to each other on the surface side of the speedometer 10.
Is expressed. In the case of implementing the present invention, the visible light LED may be replaced by an LED that emits ultraviolet light such as near ultraviolet light, and the number indicating the speed on the speed display scale may be colored by ultraviolet light.

As shown in FIGS. 3 to 5, the speedometer 10 according to the present embodiment has a number of substantially rectangular boxes having an opening 12a at one end (upper end in FIGS. 4 and 5) in the thickness direction. Housing 11 that has a substantially fan-shaped plane and is made up of a collection of light guides 12
And the LEs arranged in the respective light guide portions 12 of the housing 11.
D20-n (hereinafter referred to as "LED20-n" in the case of an expression that does not specify the positional relationship among LEDs) and a light refraction plate 25 that covers the opening 12a at the upper end of the light guide portion 12 of the housing 11. The housing 11 is a state in which a large number of light guide portions 12 are closely arranged so as to be continuous in the width direction,
It is integrally formed into a substantially fan-shaped plane that forms an arc of a predetermined angle. That is, each of the light guides 12 has a substantially flat and slender trapezoidal shape in which one end (outer peripheral end) in the length direction is wider than the other end (inner peripheral end), and the housing 11 includes the light guides. A large number of light guide portions 12 are arranged adjacent to each other in the circumferential direction, with one end in the length direction of the outer peripheral side 12 and the other end in the outer peripheral side. Further, the housing 11 is made of a metal material such as aluminum or AB.
The light-reflecting surface 12b is integrally formed of a resin material such as S, and the entire inner surface of each light guide 12 is metal-plated by vacuum deposition or the like. When the housing 11 is made of a material having a high light reflectance such as aluminum, the inner surface of the light guide 12 need not be metal-plated. The light guide portion 12 in the present embodiment is divided into a plurality of flat elongated trapezoidal hands 13 on the front surface side of the speedometer 10 by dividing the light guide portion 12 in the circumferential direction at regular intervals or at equal angles. In the present embodiment, each pointer 13 divides the speed display scale for each 10 km / h into two and displays the speed for each 5 km / h.

Inside the outer peripheral end of each light guide 12, one LED 20-n in which the three primary colors are enclosed in one LED is arranged and fixed, and can be reflected in the internal space of each light guide 12. ing. Each LED 20-n is electrically connected to a flexible board (not shown). As the LEDs 20-n, of course, commercially available LEDs can be used, but the LEDs used in this embodiment will be described later. Then, one LED is provided for each light guide 12.
20-n is the LED unit 70 in the present embodiment.
(A), 70 (B), ..., 70 (G), and by controlling a driver 201 (see FIG. 15) described later, the LED 20-n of a predetermined color is selected to perform light emission control. ing.

In the case of implementing the present invention, the LEDs 20-n in which the three primary colors are enclosed in one LED are arranged and fixed one by one inside the inner peripheral end of each light guide 12. Good. However, in the present embodiment, it is easier to secure the space, and the manufacturing cost can be reduced.

The light refracting plate 25 is a prism sheet made of PC (polycarbonate), PMMA (polymethylmethacrylate), fluorine resin, or the like, and a predetermined light-transmitting resin is the same as the planar shape of the housing 11. Is integrally formed into a flat fan-shaped flat plate, and is joined to the upper end of the housing 11 by adhesion or the like so as to cover the entire openings 12a of the light guide portions 12. In addition, the light refraction plate 2
As shown in FIG. 4, the back surface of 5 has a sawtooth shape composed of a large number of protrusions 26 each having a triangular cross section, which are continuous in the lengthwise direction of each light guide 12, that is, in the radial direction. A large number of ridge lines 27 extending in the circumferential direction are formed. In the present embodiment, the light refraction plate 25 is formed of PC resin (refractive index 1.586) as a transparent resin material to a thickness of about 1 mm, and the angle between the protrusions 26 which is the inter-tooth angle α is about 70 mm. The width between the apexes of the protrusions 26, which is the pitch P between the teeth, is about 0.26 mm. As long as the inter-tooth angle α and the inter-tooth pitch P are such that most of the light emitted from the LED 20-n into the light guide portion 12 is emitted to the outside at a predetermined angle, the same brightness as in the above case can be secured. In the above, other values can be used, and as the material of the refraction plate 25, various materials can be used as long as the refraction index is about 1.4 to 1.6. For example, the above PC resin (refractive index 1.586)
Besides, a transparent resin such as an acrylic resin (refractive index 1.49) or a fluorine resin (refractive index 1.42) may be used. Furthermore, if the inter-tooth angle α is in the range of approximately 60 degrees to 80 degrees, the projections 26 can exhibit the same function as described above, and the inter-tooth pitch P is the same as the normal visual characteristics or perception of human beings. In consideration of the capability, any value may be used as long as it does not cause variations in light.

Then, as shown in FIG. 5 and FIG.
Most of the light of the desired color that has entered the internal space of the light guide portion 12 from D20-n is refracted at a predetermined angle by each projection 26 on the back surface of the light refracting plate 25 and is emitted to the outside of the light guide portion 12 at a predetermined angle. However, the driver or the like is made to visually recognize it as light of a specific color.

Further, as shown in the figure, the LEDs 20-n
Are internally arranged in the light guide portion 12 corresponding to all the hands 13. As a result, red, green, blue, and a mixed color thereof can be freely expressed in the light guide 12 by the pointer 13. Then, as described above, by individually turning on each of the LEDs 20-n, one of the corresponding pointers 13 is selectively caused to emit light to display the speed (50 km / h in FIG. 6).
Indicator lights up). The housing 11 is L
In order to prevent the light of the ED 20-n from leaking from a portion other than the light refraction plate 25, both ends in the length direction of the light guide portion 12 are closed, and the light guide portion 12 may be integrally formed in such a shape from the beginning. Also,
The outer peripheral wall 11a (see FIGS. 4 and 5) formed by embedding the LEDs 20-n is formed as a separate body, and the housing 11 is formed.
The outer peripheral wall 11a is not provided, but the outer peripheral end is opened, and the LED 20-n is integrated at a position facing each light guide portion 12 of the outer peripheral wall 11a.
The opening a may be closed by joining a to the outer peripheral end of the housing 11.

Further, in this embodiment, the light refraction plate 2 is used.
The light diffusion film 29 is polymerized and bonded to the surface of the No. 5. The light diffusing film 29 has a light diffusing portion 29a having a translucent planar fan shape that is overlapped with a portion of the light refracting plate 25 facing the pointer 13, and an outer peripheral end and an inner peripheral end of the light diffusing portion 29a, respectively. The housing 11 is formed continuously and integrally.
Of the metal color mask portion 29b and the mask portion 29c for shielding the outer peripheral end portion (corresponding to the LED 20-n) and the inner peripheral end portion, respectively. The light-diffusing film 29 uses a known resin film or resin sheet having a light-diffusing function as the light-diffusing portion 29a, and its outer peripheral end and inner peripheral end are masked with a predetermined metal color by metal coating or material attachment. The parts 29b and 29c are configured. The light diffusion section 29a
Thus, the directional light from the light refraction plate 25 is scattered and diffused as a whole. The light guide section 12
The portion other than the portion shielded by the mask portions 29b and 29c, that is, the portion corresponding to the light diffusing portion 29a is visually recognized as the pointer 13 on the meter panel 1. In addition to the metal color, the mask portions 29b and 29c have other colors such as black as long as they have a masking effect of shielding the outer peripheral end (the portion corresponding to the LED 20-n) and the inner peripheral end of the housing 11 respectively. It may be a color. Further, in the actual meter panel 1, a publicly known design surface film (not shown) is separately provided on the light diffusing film 29 so as to overlap, and the design of the meter panel 1 is deteriorated by the mask portions 29b, 29c and the like. Etc. may be prevented. Alternatively, the light diffusing film 29 may be omitted, and the design surface film may be directly superposed on the light refraction plate 25 to mask the outer peripheral end portion and the inner peripheral end portion of the housing 11 by the design surface film.

Next, the LED unit serving as the light source of the speedometer 10 of this embodiment will be described.

FIG. 7 is a plan view (a), a front view (b) and a side view (c) showing an LED unit used in the vehicle meter of the embodiment of the present invention. 8 is an exploded plan view of a main part of the LED unit used in the vehicle meter of the embodiment of the present invention, and FIG. 9 is an electrical equivalent of the LED unit used in the vehicle meter of the embodiment of the present invention. Circuit.

As shown in FIG. 8, the LED 20-n has a plurality of colors such as two colors or three colors, for example, a red LED chip 1
00R, the blue LED chip 100B, and the green LED chip 100G are arranged on the color-specific lead base portion 83R and the common lead base portion 91C. However, the present invention is not limited to this, and for example, the red LED chip 100R, the blue LED chip 100B, and the green LED chip 100G may be replaced by the lead bases 81B, 82G, 83R for each color. The red LED chip 100R, the blue LED chip 100B, and the green LED chip 100G can be provided for each common lead base 91C only. In addition, the red LED chip 100R and the blue LED chip 100
B, 1 or 2 green LED chips 100G,
It is also possible to arrange the lead base portions 81B, 82G, and 83R for each color in any one of them, and the rest to the common lead base portion 91C.

Further, as shown in FIG.
In the ED units 70 (A) to 70 (F), the LED 20
-1 to 20-5, which are shown in FIG.
The LED unit 70 has the internal structure shown in
Although (G) is composed of six LEDs 20-31 to 20-36, duplicate description is omitted here.

As shown in FIGS. 7 to 9, each LED 20
-1 to 20-5 are common to each color and are arranged in parallel to each other and are arranged in parallel to the color-based lead base 81B connected to the blue LED chip 100B, and the green-colored lead base 82G connected to the green LED chip 100G. , Red LED chip 100R
Is connected to the lead base portion 83R for each color that is connected to.
That is, the information of the LEDs 20-1 to 20-5 is the lead wire 81,
82, 83 to lead bases 81B, 82G, 83R for each color
Is input to Three color lead bases 81B, 82G,
The 83R is preferably arranged in parallel with each other, at least in a range where the LEDs 20-1 to 20-5 are continuously arranged, for the convenience of manufacturing and use thereof. Especially,
When the three color-based lead bases 81B, 82G, and 83R are formed of a material having high flexibility, the LEDs 20-1 to 20
-5 Separate the lead bases 81B, 82G, 83R by color
Bends or folds can bring them closer together.

In addition, three parallel color lead bases 81
Common lead bases 91C, 92C, 93C, 94C, 95C having ends arranged substantially at right angles to B, 82G, 83R and close to the color-specific lead bases 83R are provided. Common lead bases 91C, 92C, 93
C, 94C and 95C are lead bases 81B and 82 for each color.
By pulling out the G and 83R at a substantially right angle, the manufacturing thereof can be facilitated, the pulling process can be facilitated, and the arrangement pitch of the LEDs 20-1 to 20-5 can be made dense. However, the present invention is not limited to this, and for example, the common lead base portions 91C, 92C, 93C are provided between any of the three parallel color lead base portions 81B, 82G, 83R. , 94C, 95
The end of C can be provided. At this time, one or two parallel lead base portions 81B, 82G, 83
It becomes necessary to cross over with R. Therefore, in the present embodiment, the two-dimensional processing can be performed and the manufacturing cost can be reduced.

These parallel lead bases 81B, 8 for each color
The 2G and 83R are integrated by a translucent package resin that constitutes each of the LEDs 20-1 to 20-5. Each L
The package resin forming the EDs 20-1 to 20-5 is a lead base holding portion 71b for integrally fixing the three color-specific lead base portions 81B, 82G, 83R and the respective common lead base portions 91C, 92C, 93C, 94C, 95C. , 72b, 73
b, 74b, 75b and LED chips 100R, 100
Display unit 71 that efficiently guides the light emission of B and 100G to the outside
A convex lens having a substantially elliptical plane is formed so as to form a, 72a, 73a, 74a, and 75a.

Further, among the LEDs 20-1 to 20-5, LE
The configuration of D20-1 will be described in detail with reference to FIG. Note that this is a configuration common to the LEDs 20-1 to 20-5.

Parallel color lead bases 81B, 82G,
The 83R improves the adhesion with the package resin when integrated with the translucent package resin that constitutes each LED 20-1, and provides lead bases 81B, 82G, 83 for each color.
In order to make it difficult for peeling to occur with R, it is bent like the color-specific lead bases 81B and 83R or is deformed like the color-specific lead bases 82G to increase the joint area by expanding the surface area, Colored lead base 81B for couples,
Cracks are less likely to occur between 82G and 83R. Of course, when the color-specific lead bases 81B, 82G, and 83R are flexible such that external force is difficult to be transmitted, and when sufficient bonding force with the package resin can be obtained, it is not necessary to bend or deform them.

In the LED 20-1, the red LED chip 100R is attached to the lead base portion 83R for each color and the blue LED chip 100R is attached to the blue LED chip 100R.
The ED chip 100B and the green LED chip 100G are arranged on the common lead base 91C. At this time, in order to efficiently guide the light emission of the LED chips 100R, 100B, 100G to the outside, the red LED chip 100R joined to the color-specific lead base portion 83R has a mortar-shaped recessed hole at the corresponding portion of the color-specific lead base portion 83R. 102R is formed, and it is located in the approximate center. Similarly, the blue LED chip 100B and the green LED chip 100G joined to the common lead base 91C have a mortar-shaped recessed hole 102B and a recessed hole 102G at the corresponding portions of the common lead base 91C.
Is formed and is located in the approximate center. Therefore, the red LED chip 100R is reflected by the recessed hole 102R to efficiently guide the light to the display portion 71a, and the blue LE is also used.
The D chip 100B and the green LED chip 100G have a recess hole 102B and a recess hole 102G in the common lead base 91C.
The light is efficiently guided to the display portion 71a by being reflected by.

The LED chips 100R, 100B, 1
FIG. 9 shows the relationship between the 00G, the lead bases 81B, 82G, 83R by color, and the common lead base 91C by an equivalent circuit.
become that way.

The LED unit 70 of this embodiment is used.
(A) to 70 (G) are five LEDs 20-1 here.
~ 20-5 LED chips 100R, 100B of three primary colors,
Although the case of encapsulating 100G has been described, a single LED formed by encapsulating a plurality of LED chips can be used when the present invention is carried out. Further, the LED units 70 (A) to 70 (G) include five LEDs 20-1 to
Although the case of using 20-5 has been described, when the present invention is carried out, the number of LEDs may be plural. In particular, multiple connections can be made, but the length (pitch) between the LEDs depends on the yield in the LED manufacturing process and the application.
And the number are set.

As described above, the LED units 70 (A) to 70 (G) of this embodiment are the LED chips 10 of a plurality of colors.
A plurality of LEs in which 0R, 100B, and 100G are sealed in a predetermined shape with a package resin and are connected and arranged in a specific direction.
D20-1 to 20-5 and a plurality of connected LEDs 20-1 to 20-5
0-5 are connected, and LED chips 100R, 10 of multiple colors are connected.
0B and 100G, and the lead bases 81B, 82G, and 83R for the respective colors, which are arranged substantially parallel to each other and which are integrated by the package resin and provided for each color, and the multiple colors integrated by the package resin. Separate lead bases 81B, 82G, 8
An end portion is arranged at a position adjacent to a lead base portion located outside of 3R, and is common in common for the LED chips 100R, 100B, 100G of the plurality of colors of the plurality of LEDs 20-1 to 20-5. Lead bases 91C, 92C, 93
C, 94C, and 95C.

Therefore, the LED chips 100 of a plurality of colors
Lead base 81 for each color corresponding to R, 100B, 100G
B, 82G, 83R and lead bases 81B, 82 for each color
Common lead bases 91C and 92C common to G and 83R,
Multiple LEDs 20-1 to 93C, 94C, 95C
It is possible to perform lighting control of 20-5 and to light any color by time division. Also, a plurality of LEDs 2
The integration density such as the length (pitch) and the number of LEDs between 0-1 to 20-5 is determined by the color-specific lead bases 81B, 82G, and 83R which are arranged substantially in parallel and integrated with the package resin. Therefore, the lead bases 81B, 82G, 83 for each color are
The integration density can be arbitrarily set by making R flexible, curving or bending. The lead bases 81B, 82G, 83R for each color and the common lead bases 91C, 92C, 93C, 94C, 95C are integrally fixed by the package resin forming the LEDs 20-1 to 20-5. Therefore, even when the LED units 70 (A) to 70 (G) are used for display, a plurality of LEDs 20-1 are mounted on the flexible substrate or the like as in the conventional case.
It can be used to display any shape without implementing ~ 20-5. Therefore, it is possible to reduce the number of parts of the entire applied part, reduce the cost, and improve the design.

Further, in the present embodiment, the common lead base portions 91C, 92C, 93C, 94C and 95C are arranged substantially perpendicular to the plurality of color lead base portions 81B, 82G and 83R. Lead base 81B, 8
Common lead bases 91C and 92 parallel to 2G and 83R
Since it is not necessary to dispose C, 93C, 94C, and 95C, the connection between the plurality of LEDs 20-1 to 20-5 is simple and the pitch between the LEDs 20-1 to 20-5 can be narrowed. . Then, the common lead base portions 91C and 9C
2C, 93C, 94C, and 95C are drawn out at a substantially right angle to the plurality of color-specific lead bases 81B, 82G, and 83R, so that the LEDs 20-1 to 20-2 when used as display means
0-5 is easier to mount and the common lead base 91
LE of the interval between C, 92C, 93C, 94C, 95C
Since the pitch can be set between D20-1 to D20-5, the method of connecting the leads 91 to 95 to them is flexible and the connecting work is easy. As a matter of course, arranging the common lead bases 91C, 92C, 93C, 94C, and 95C substantially at right angles to the plurality of color-specific lead bases 81B, 82G, and 83R generally improves the above-described work efficiency and the like. However, in the case of implementing the present invention, 6
It is also possible to have a gradient such as 0 degree. Depending on the specifications, it may be preferable.

Further, in this embodiment, one LE is provided for each of the lead bases 81B, 82G and 83R for each color.
D chip, common lead bases 91C, 92C, 93C,
Two LED chips are arranged with respect to 94C and 95C, which is consistent with the technology for manufacturing the LED chip, and one LED chip is directly provided to one of the lead bases 81B, 82G, and 83R for each color. LED chip, common lead base 91
Two LED chips can be formed on C, 92C, 93C, 94C and 95C.

In the present embodiment, the color-specific lead bases 81B, 82G, 83R provided with the LED chips are arranged.
And common lead bases 91C, 92C, 93C, 94C,
95C forms recessed holes 102R, 102G, and 102B, and a plurality of color-based lead bases 81B and 82 are formed in the approximate center thereof.
One common lead base 9 for either G or 83R
Two LED chips are arranged for 1C, 92C, 93C, 94C and 95C. Therefore, the light can be efficiently guided to the display portions 71a, 72a, 73a, 74a, 75a.

In the above embodiment, the LED 20-n is arranged so as to horizontally enter the outer peripheral side of the horizontal fan shape of the housing 11, but in the case of implementing the present invention, the housing is used. It is also possible to arrange so that light enters from the lower surface side of the outer periphery of the horizontal elliptical fan shape of 11.

Next, the light guide portion of the speedometer 10 of the embodiment will be further described. Here, an example in which the light source from the light guide section is made to emit light softly will be described, but when the present invention is carried out, the present invention is not necessarily limited to the following embodiments, and any of the above embodiments may be adopted. Good.

FIG. 10 is a sectional view showing the light guide portion according to the embodiment of the present invention.

In FIG. 1 and FIG. 2, the light guide portion 12 of the present embodiment is arranged inside the speedometer 10 arranged at a predetermined position of the meter panel 1 of an automobile and is a unit of one scale. The light guide portion 12 of this embodiment is the LED 2
1-n, a light scattering sheet 35 as a light scattering means, and a mold resin 34.

The LED 20-n has LED chips 100R, 100B, 100G of single color or plural colors, which are made of a transparent package resin material such as epoxy resin or acrylic resin and have a substantially hemispherical top portion. LED20
-n emission color, LED chip 100R, 100
By setting B and 100G to one or more colors,
Various types can be used, from a single color to a plurality of colors to full color emission. For example, a visible light LED chip such as red, green and blue may be installed in only one color, or a combination of any two or more of these may be installed, or LEDs 21-n that irradiate near ultraviolet rays are used. However, a fluorescent paint or the like that emits ultraviolet light may be applied to the display side. This embodiment is a lead frame type LED 20.
-n is used, a monochrome LED chip is mounted and fixed on one lead 32 to electrically connect one electrode thereof, and the other electrode is connected to the other lead 33. The shape of the package resin 20A of the LED 20-n and the shape of the top of the package resin 20A are not limited to the substantially columnar shape and the substantially hemispherical shape, and may be various other shapes as necessary.

The light-scattering sheet 35 faces the top of the package resin 20A of the LED 20-n, and is viewed from the surface side such as the display surface 37 including the light-reflecting plate 25 and the light diffusion film 29 on the light receiving side. It is arranged so as to cover the entire package resin 20A. That is, the light-scattering sheet 35 of the present embodiment is a flat plate that is developed in the plane direction (horizontal direction in the drawing) orthogonal to the emission center axis (extension line of the axis of the package resin 20A) of the LED 20-n. LED seen from the light-receiving side by forming light in a predetermined angle range from the emission center axis in a semi-transmissive state and scattering
The outline of 20-n is blurred. The light-scattering sheet 35 is disposed in contact with the top of the package resin 20A so as to be orthogonal to the central axis of light emission of the LEDs 20-n, and is, for example, a paper material, a smoked semi-transparent acrylic plate, or the like. It is composed of a milky white sheet material. Further, the shape of the light-scattering sheet 35 is such that its center is the LED 20.
-n is located at approximately the same position as the emission center, or its outer peripheral edge extends in a predetermined angle range in the plane direction from the emission center axis and completely covers the contour of the LED 20-n seen from the light receiving side. It can have various shapes such as a shape and a circular shape.

The mold resin 34 integrally encloses the package resin 20A of the LED 20-n and the light scattering sheet 35 placed in contact with the top of the package resin 20A, and is transparent such as epoxy resin, acrylic resin, or the like. Made of mold resin material. Mold resin 34 of the present embodiment
Is formed in a square block shape corresponding to the shape of the display surface 37 to be mounted. Such mold resin 34
In order to integrally enclose the LED 20-n and the light-scattering sheet 35 with each other, a known article encapsulation or embedding technique such as a potting method or an embedding method described later is used. In the light guide portion 12 of the present embodiment, the lower ends of the leads 32 and 33 of the LED 20-n are attached to the lower end surface of the mold resin 34 in a state where the LED 20-n and the light scattering sheet 35 are integrally enclosed by the mold resin 34. Exposed from those leads 3
The lower end portions of the reference numerals 2, 33 are electrically connected and fixed to the printed board 31.

Next, a manufacturing process of the light guide portion 12 of the present embodiment having the above structure will be described.

FIG. 11 is a cross-sectional view showing the method of manufacturing the light guide portion according to the embodiment of the present invention, in which (a) shows the LED arranging step,
(B) shows a potting process, respectively.

As shown in FIG. 11A, first, the LED
20-n is arranged at a substantially central position in the molding space 41 of the mold 40, and the lower ends of the leads 32 and 33 are arranged in the accommodation recess 42 of the mold 40. The molding space 41 of the mold 40 has a substantially rectangular block shape corresponding to the mold resin 34, and the accommodating recess 42 is a space having a volume such that the leads 32 and 33 can be accommodated in a planar rectangular shape and a circular shape. Then type 4
The center of the light scattering sheet 35 is brought into contact with and placed on the top of the package resin 20A of the LED 20-n arranged in 0.
Hold in that position. After that, as shown in FIG. 11B, an epoxy resin or the like as a potting resin material is filled in the molding space 41 of the mold 40 and cooled and solidified. As a result, the light scattering sheet 35 is placed in contact with the top of the package resin 20A of the LED 20-n,
Also, the light scattering sheet 35 can be integrally enclosed. When the mold resin 34 is cooled and solidified, the mold 40
Then, the light guide portion 12 is obtained.

The receiving recess 42 of the mold 40 is LE
The area is smaller than the bottom surface of the package resin 20A of D20-n, and when the mold resin 34 is filled, the package resin 20A
The outer peripheral edge portion of the bottom surface closes the outer peripheral edge of the housing recess 42 to prevent the mold resin 34 from entering the housing recess 42. Further, it is preferable that the light scattering sheet 35 is, for example, adhered to the top of the package resin 20A by a transparent adhesive so as to be temporarily held in a fixed position so as not to be displaced when the mold resin 34 is filled.

Next, the operation of the light guide portion 12 of the present embodiment configured as described above will be described.

The light guide section 12 of this embodiment causes the LEDs 20-n to emit light in response to a predetermined detection signal from a sensor (not shown) under the control of a known light emission control circuit. For example, when the display surface 37 is used as a warning lamp other than the speedometer 10, an abnormal increase in cooling water temperature,
In response to the detection signal representing the predetermined warning condition, the LED 20
-n emits light, and the symbol mark on the display surface 37 is lit and displayed. At this time, the light emitted from the LED 20-n is diffused in all directions around the light emission center axis and travels toward the display surface 37 (upward in the drawing). Here, the light diffusion sheet 35 is arranged above the LEDs 20-n and blocks the light emitted from the LEDs 20-n in a semi-transmissive state over a predetermined angle range from the light emission central axis. The light is scattered by the light-scattering sheet 35, and is uniformly dispersed over the entire mold resin 34. Therefore, the LED 20-n is entirely blurred, and the light guide portion 12 emits light with a uniform light intensity distribution on the display surface 37.

As a result, the light from the LED 20-n does not directly enter the display surface 37 to project the shape or contour of the LED 20-n, and the contour line of the LED 20-n is not visually recognized from the outside. .

Thus, the light guide portion 12 of the above embodiment.
Is an LED 20-n formed by encapsulating an LED chip with a package resin 20A in a predetermined shape having a top portion, and L
The LED 20-n is disposed integrally with the LED 20-n so as to face the top of the package resin 20A of the ED 20-n and cover the entire package resin 20A when viewed from the light receiving side.
The light emitted in a predetermined angle range from the 20-n emission central axis is made semi-transmissive and scattered, so that L seen from the light receiving side is obtained.
And a light scattering means for blurring the outline of the entire ED20-n,
Further, the light scattering means is composed of a milky white light scattering sheet 35 disposed in contact with the top of the package resin 20A so as to be orthogonal to the emission center axis of the LED 20-n, and in addition, the package of the LED 20-n A transparent molding resin 34 that integrally encloses the light scattering sheet 35 disposed in contact with the tops of the resin 20A and the package resin 20A is provided.

Therefore, in the above embodiment, the LED 20
The emitted light of -n is diffused in all directions around the emission center axis and travels toward the display surface 37 (upward in the figure) while the light diffusion sheet 35 disposed above the LEDs 20-n.
Emits light emitted from the LED 20-n into a semi-transmissive state and scatters over a predetermined angle range from the emission central axis. Then, the light from the LEDs 20-n has its light intensity reduced by the light-scattering sheet 35, is scattered, and is evenly dispersed over the entire upper end portion of the mold resin 34. As a result, the LED 20-n is entirely blurred, and the light guide section 12 emits light with a substantially uniform luminous intensity distribution on the display surface 37. Therefore, the light from the LED 20-n does not directly enter the display surface 37 to project the shape or contour of the LED 20-n, and the contour line of the LED 20-n is not visually recognized from the outside. As a result, it is possible to reduce the number of parts of the entire display surface 37 of the meter panel 10 which is a part to be applied, reduce the cost, and improve the design. In particular, a separate component is not required to blur the contour of the LED 20-n on the display surface 37, and the workability of assembly can be improved. In particular, since the LED 20-n and the light-scattering sheet 35 are integrally sealed by the mold resin 34, the light-scattering sheet 35 can be fixed and protected at a fixed position of the LED 20-n by the mold resin 34.
By forming the molding resin 34 into a shape corresponding to the display surface 37, positioning and assembling work of the light guide portion 12 on the display surface 37 can be facilitated.

FIG. 12 is a sectional view showing an example of the light guide portion according to the embodiment of the present invention. In FIG. 12, only the differences from FIG. 11 will be described, and the same configurations will be denoted by the same reference numerals and the description thereof will be omitted.

In FIG. 12, the light guide portion 12 of the present embodiment.
Is a light scattering means for the package resin 20 of the LED 20-n.
It differs from the embodiment of FIG. 10 in that it is composed of a milky white light-scattering coating 36 applied to the top of A. The light-scattering coating 36 is integrally formed so as to cover the entire top surface of the package resin 20A of the LED 20-n of FIG. 10 having a substantially hemispherical shape, and makes the emitted light of the LED 20-n a semi-transmissive state, and , Is supposed to scatter. As a result, the light-scattering coating 36 faces the top of the package resin 20A of the LED 20-n and covers the entire package resin 20A when viewed from the surface side of the display surface 37 which is the light receiving side. . That is, the light-scattering coating film 36 of this embodiment is used for the LED 20.
-The LED viewed from the light receiving side by making the light emission within a predetermined angle range from the emission center axis of -n semi-transmissive and scattering
The outline of 20-n is blurred. Further, the light-scattering coating film 36 is the package resin 20A of the LED 20-n.
Spread the top of the LED within a predetermined angle range from the central axis of light emission,
As long as it completely covers the outline of the 20-n seen from the light receiving side, the LED
20-n package resin 20A and various modifications according to the shape change of the top.

The LED 20-n and the light scattering coating 36 are
It is integrally sealed with a resin having the same structure as the mold resin 34 of the embodiment of FIG. The light guide portion 12 of the present embodiment is also similar to the light guide portion 12 of the embodiment of FIG.
The lower ends of the leads 32, 33 of the LED 20-n are exposed from the lower end surface of the molding resin 34, and the lower ends of the leads 32, 33 are electrically connected and fixed to the printed board 31.

In order to manufacture such a light guide portion 12, for example, first, a package resin 20A for a large number of LEDs 20-n is prepared.
In a state where the vertices of the above are arranged in the same plane, milk white paint is applied to the entire top of the package resin 20A by roller coating such as a rubber roller and dried. Then, the entire top portion of the package resin 20A is covered with the milky white coating film, and the light scattering coating film 36 is in a semi-transmissive state and scatters light in a predetermined angle range from the emission central axis. Next, the LED 20-n and the light-scattering coating film 36 are integrally encapsulated by the molding resin 34 by the potting method similar to the embodiment of FIG.

The light-scattering coating film 36 is the package resin 2
Since it is fixed to the top of the package resin 20A and is not likely to be separated from the top of the package resin 20A, the mold resin 34 as in the present embodiment need not be provided. This makes it possible to simplify the overall configuration and reduce costs. On the other hand, by encapsulating the LED 20-n and the light-scattering coating film 36 with the mold resin 34, the light-scattering coating film 36 can be protected, and by forming the mold resin 34 into a shape corresponding to the display surface 37, Positioning and assembling work on the display surface 37 are facilitated.

Thus, the light guide portion 12 of the above embodiment.
Is an LED 20-n formed by encapsulating an LED chip with a package resin 20A in a predetermined shape having a top portion, and L
The LED 20-n is disposed integrally with the LED 20-n so as to face the top of the package resin 20A of the ED 20-n and cover the entire package resin 20A when viewed from the light receiving side.
The light emitted in a predetermined angle range from the 20-n emission central axis is made semi-transmissive and scattered, so that L seen from the light receiving side is obtained.
And a light scattering means for blurring the outline of the entire ED20-n,
Further, the light-scattering means is applied to the top of the package resin 20A of the LED 20-n to form a substantially milky light-scattering coating film 3
6. A transparent mold resin 3 which is composed of 6 and additionally integrally encapsulates the package resin 20A of the LED 20-n and the light scattering coating 36 covering the top of the package resin 20A.
4 is provided.

Therefore, in the above embodiment, the LED 20
The emitted light of −n diffuses in all directions around the emission center axis and travels toward the display surface 37 (upward in the drawing) while covering the top of the package resin 20A, which is the upper portion of the LED 20-n. The scattering coating 36 makes the light emitted from the LEDs 20-n semi-transmissive and scatters over a predetermined angle range from the emission central axis. Then, the light from the LED 20-n is weakened in its light intensity by the light-scattering coating film 36 and is scattered, and is evenly dispersed over the entire upper end portion of the mold resin 34. As a result, the LED 20-n is entirely blurred, and the light guide section 12 emits light with a substantially uniform luminous intensity distribution to the display section. Therefore, the light from the LED 20-n does not directly enter the display surface 37 to project the shape or contour of the LED 20-n, and the contour line of the LED 20-n is not visually recognized from the outside. As a result, it is possible to reduce the number of parts of the entire display surface 37 of the meter panel 10 which is a part to be applied, reduce the cost, and improve the design. In particular, the LED 2 on the display surface 37
No separate part is required to blur the 0-n contour, and the workability of assembly can be improved. Particularly, since the light scattering coating 36 is used as the light scattering means, the LED 20-n
It does not require any special means for fixing to, the overall construction is simpler and the cost is further reduced.

FIG. 13 is a sectional view showing an example of the light guide portion according to the embodiment of the present invention. Note that, in FIG. 13, only the differences from FIGS. 11 and 12 will be described, and the same configurations will be denoted by the same reference numerals in the drawings and description thereof will be omitted.

In FIG. 13, the top portion of the package resin 20A of the LED 20-n of single color or RGB is formed as a funnel-shaped tapered recess, and a tapered reflective surface 51d formed by coating or coating a reflective film is provided thereon. There is. The taper reflecting surface 51d can be coated with white paint, or its surface can be a fine-grained uneven surface. In particular, although it may be a mirror surface, it is preferably a diffuse reflection surface. The mold resin 52 has a reflecting surface 53 that is substantially parallel to the tapered reflecting surface 51d. Also for this reflecting surface 53, white paint can be applied, or the surface can be made into a fine-grained uneven surface. It can also be a mirror surface,
It is preferable to use an irregular reflection surface.

That is, in the present embodiment, the LE formed by sealing the LED chip in a predetermined shape with the package resin 20A.
A taper that covers the entire package resin 20A so as to face the tops of the package resin 20A of the LED 20-n and the LED 20-n, and that makes light emission in a predetermined angle range from the emission central axis of the LED 20-n into a semi-transmissive and scattering state. And a light scattering means composed of the reflecting surface 51d. In particular, the light scattering means including the tapered reflecting surface 51d in the present embodiment further includes the reflecting surface 53 that is substantially parallel to the tapered reflecting surface 51d.
Although it is scattered, in the case of implementing the present invention,
It may be scattered by the mold resin 52 itself or the outer surface of the mold resin 52.

Further, the package resin 20 of the LED 20-n
Although A is disposed in the mold resin 52, LE
It is also possible to form a space between the package resin 20A of D20-n and the mold resin 52 so that the resin is reflected on the inner surface of the mold resin 52.

Therefore, in the above embodiment, the LED 20
The emitted light of -n is diffused in all directions around the emission central axis and travels toward the display surface 37 (upward in the drawing). L
The taper reflection surface 51d on the top of the package resin 20A, which is the upper part of the ED 20-n, reflects and scatters the light emitted from the LED 20-n over a predetermined angle range from the emission central axis. When the light from the LEDs 20-n is scattered, it is evenly dispersed under the mold resin 52. Further, the LED 20-n is further scattered by the reflecting surface 53 substantially parallel to the tapered reflecting surface 51d, and the entire LED 20-n is blurred.
As a result, light is emitted to the display surface 37 with a substantially uniform luminous intensity distribution. Therefore, the light from the LED 20-n does not directly enter the display surface 37 to project the shape or contour of the LED 20-n, and the contour line of the LED 20-n is not visually recognized from the outside. As a result, it is possible to reduce the number of parts of the entire display surface 37 of the meter panel 10 which is a part to be applied, reduce the cost, and improve the design. In particular, a separate component is not required to blur the contour of the LED 20-n on the display surface 37, and the workability of assembly can be improved. In particular, since the taper reflecting surface 51d is used as the light scattering means, no special means is required for fixing the same to the LED 20-n, and the overall configuration is simpler and the cost is further reduced.

FIG. 14 is a sectional view showing an example of the light guide portion according to the embodiment of the present invention. Note that, in FIG. 14, only the differences from FIGS. 11 to 13 will be described, and the same configurations will be denoted by the same reference numerals and the description thereof will be omitted.

In FIG. 14, a housing resin 62 is formed by forming a housing in place of the molding resin of each of the above embodiments. The light refraction plate 25 formed of a prism sheet or the like bonded to the lower surface of the display surface 37 is a commercially available sheet that efficiently refracts light to the display surface 37. The inner surface of the housing resin 62 facing the light refraction plate 25 has a quadratic curved surface 64.
And the distance to the light refraction plate 25 is 2 along it.
It changes with the next function. Although not shown, if a prism sheet is also bonded to the quadratic curved surface 64, light scattering will be better.

That is, in this embodiment, the LED chip 10
LED 20-n formed by sealing 0R, 100B, 100G in a predetermined shape with a package resin 20A, and LED 20
-n to face the top of the package resin 20A and to cover the entire package resin 20A, and to make a semi-transmissive and scattering state of the light emission within a predetermined angle range from the emission center axis of the LED 20-n and the secondary curved surface 64 and light. The light scattering means is composed of the refraction plate 25. Particularly, the light scattering means including the quadratic curved surface 64 and the light refracting plate 25 in the present embodiment further scatters the reflected light from the quadratic curved surface 64. When practicing the present invention, it may also be scattered by the outer surface of the mold resin that fills the space formed by the housing resin 62.

Also in this embodiment, the same effect as that of each of the above-mentioned embodiments can be obtained.

By the way, the light scattering means of the light guide portion 12 of each of the above-mentioned embodiments is composed of a substantially milky white light scattering sheet 35 or a light scattering coating film 36, which is used when the present invention is carried out. LED 20 is not limited
-n, facing the top of the package resin 20A and covering the entire package resin 20A as seen from the light receiving side,
It is arranged integrally with the LED 20-n and scatters the light emission within a predetermined angle range from the light emission central axis of the LED 20-n, thereby functioning to blur the outline of the entire LED 20-n viewed from the light receiving side. Good.

Further, although the light guide portion 12 of the above embodiment is embodied for illuminating the display surface 37 of the speedometer 10, the light guide portion 12 when embodying the present invention is used for the display portion of the speedometer 10 or the like. In addition to the above, for example, warning lamps, turn signal indicators 2 and 3 (see FIG. 1), a high beam indicator, a select lever indicator of an AT vehicle, and the like are provided inside, and various other display units are provided for illumination thereof. You may embody 4a, 4b, 4c, 4d. Further, the light guide portion 12 of the present embodiment is not limited to the display portion of the meter panel, and may be any one as long as it requires internal illumination and it is preferable to erase the contour of the LED to improve the design. Can be applied to the site. Then, the light guide portion 12 of each of the above embodiments is LE
A shielding wall or the like for preventing light from D20-n from leaking to the adjacent space may be provided on the side surface of the mold resin 62, for example.

As described above, the vehicle meter according to the above-described embodiment has the light guide portion 12 which has the shape of a long rectangular box having an opening at one end in the thickness direction and which has the light reflection surface 12b as the inner surface. LED2 which injects light from one end in the length direction of the portion 12
0-n and the entire opening 12a of the light guide 12 are formed in a flat plate shape, and the back surface is formed into a sawtooth shape continuous in the length direction of the light guide 12 so that light incident from the LED 20-n to the light guide 12 is received. A light refraction plate 25 made of a translucent material that refracts at a predetermined angle and emits to the outside of the light guide portion 12 at a predetermined angle. The light refraction plate 25 exhibiting such a function is PC (polycarbonate). ) Resin, etc., and a projection 2 having a triangular cross section with a predetermined inter-tooth angle on the back surface thereof.
6 is provided, the refractive index of light in the projection 26 is used, and the light in the light guide portion 12 is deflected by a predetermined angle in consideration of the directivity and emitted to the outside.

Therefore, by embodying such a structure in the pointer 13 of the speedometer 10 such as a speedometer, the light incident from the LED 20-n into the internal space of the light guide portion 12 passes through the light refraction plate 25. , Is emitted to the surface side of the speedometer 10 at a predetermined angle and is visually recognized from the outside. At this time, most of the light in the light guide section 12 is emitted to the outside at a constant angle, and therefore has a specific directivity and is visually recognized by the driver or the like who is the user. As a result, the brightness of the pointer 13 corresponding to the light guide portion 12 is significantly improved, and in particular, by considering the emission angle thereof, by appropriately setting the inclination angle, the arrangement position, etc. at the time of assembly in the meter panel 1, The amount of light reaching the user can be dramatically increased, and the visibility can be significantly improved. According to the experimental value, the brightness of each pointer 13 was improved in the order of 3 digits or more. Further, since the light guide portion 12 has a box shape, a sufficient space is formed inside the light guide portion 12, so that the LED 20-n can be mounted inside the LED 20-n later and the flexibility of the shape and size of the LED 20-n is increased. , Like the above embodiment,
Arbitrary L that has excellent economic efficiency and light emission characteristics such as cannonball type LED
ED can be used.

In the embodiment of this type, the light guide 12
Housing 11 is formed by continuously molding a plurality of
In addition to the case where the light guides 12 are individually formed, or the light refraction plate 25 is formed in the openings 12a of the light guides 12.
It includes the case of individually covering.

Further, the vehicle meter of the above embodiment is
A housing 11 formed by integrally molding a plurality of light guide portions 12 having a substantially rectangular box shape having an opening 12a at one end in the thickness direction and having a light reflecting surface 12b as an inner surface so as to be continuous in the width direction; The LED 20-n, which is disposed at one end of each light guide 12 in the lengthwise direction and allows light to enter the light guide 12, and the openings 12a of all the light guides 12 are formed in a flat plate shape, and the back surface of each light guide 12 is The light refraction made of a translucent material that has a sawtooth shape continuous in the length direction of the portion 12 and refracts the light incident from the LED 20-n to the light guide portion 12 at a predetermined angle and emits the light to the outside of the light guide portion 12 at a predetermined angle. And a plate 25.

Therefore, in the above embodiment, by embodying such a configuration in the speedometer 10 such as a speedometer, in addition to the operation and effect of the above embodiment, the light emitted from the LED unit 20 is Light incident on the internal space of the corresponding light guide 12 and parallel to the length direction of the refraction plate 25 in the light guide 12 and light inclined upward at an angle of about 20 degrees reach the light refraction plate 25 and are projected. The part 26 emits the light to the surface side of the speedometer 10 at a predetermined angle, and causes the corresponding pointer to emit light. At this time, it is possible to express a variable amount of change in speed by changing the light emitting area (angle) of the speedometer 10 or to change only the light emitting position of the single pointer 13. It is also possible to express only the change points by changing the color of the corresponding pointer 13.
Then, the driver can recognize the traveling speed by visually recognizing the pointer 13 that emits light at the predetermined angular position of the speedometer 10. Therefore, the pointer and the drive mechanism for the pointer, which are the conventional mechanical components, are unnecessary. As a result, it is possible to reduce conventional mechanical components and improve product quality such as durability, reliability, and display accuracy. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

In particular, in this embodiment, since a large number of light guide portions 12 are integrally molded to form the housing 11, compared with the case where each light guide portion 12 is separately molded and joined in a later step, Manufacturing is easier and costs can be reduced.

Further, when the housing 11 is made of a metal material having a high thermal conductivity such as aluminum, the heat dissipation effect lowers the temperature in the light guide portion 12 to increase the cooling effect, and the brightness is lowered by heat. LED 20-n with
The brightness of can be maintained at a high value. Further, if the light diffusion film 29 is provided to diffuse the directional light from the light refraction plate 25, the degree of light transmission in the pointer 13 is slightly lowered, but the pointer is displayed as light that is easy for the driver to see and easy on the eyes. can do.

Further, in the present embodiment, each of the light guides 1 is
2 has a substantially flat trapezoidal shape in which one end in the length direction is wider than the other end, and a large number of light guide portions 12 are arranged adjacent to each other with one end in the length direction on the outer circumference side and the other end on the inner circumference side, and the housing 11 is It is a fan-shaped plane.

Therefore, the speedometer 10 can be used in a fan-like manner in an atmosphere similar to that of a conventional analog meter, and the designability can be improved, but the user does not feel any discomfort.

In the present embodiment, the light refraction plate 2 is used.
5 is made of a transparent resin material having a refractive index of about 1.5, and the inter-tooth angle α is set in the range of about 60 degrees to 80 degrees.

Therefore, most of the light in the light guide portion 12 consisting of the light parallel to the length direction of the refraction plate 25 and the light inclined upward in the angular range of about 20 degrees is reflected by the light refraction plate 25 at a predetermined angle. The light is emitted to the outside and is visually recognized by the driver as light having a specific directivity. As a result, the brightness of the pointer 13 can be further improved and the visibility can be further improved.

Further, the present embodiment is provided with a control means for causing the LED 20-n corresponding to the light guide portion 12 at a predetermined position to emit light according to the traveling speed. Therefore, when it is used as a speedometer, the LED unit 20 corresponding to the pointer 13 at the predetermined angular position emits light according to the traveling speed by the control means for controlling the light emission while the vehicle is traveling. The light emitted from the LED unit 20 is incident on the light guide portion 12 of the corresponding pointer 13, is emitted to the outside through the light refracting plate 25 at a predetermined angle, and the corresponding pointer 13 is emitted.
Light up. Then, the driver can recognize the traveling speed by visually recognizing the pointer 13 that emits light at the predetermined angular position of the speedometer 10. Therefore,
The need for a pointer and a drive mechanism for the pointer, which are conventional mechanical components, is eliminated. As a result, it is possible to reduce conventional mechanical components and improve product quality such as durability, reliability, and display accuracy. Further, the depth dimension can be reduced by the amount of the pointer and the drive mechanism, the thickness can be reduced, the degree of freedom in design can be increased, and the distance from the driver's eye position can be increased.

Further, in the present embodiment, the LED 20-n which makes the light incident on the light guide portion 12 has three primary colors of red, green and blue. In this kind of embodiment, an arbitrary color can be expressed, and the variable can be expressed in detail by the color. In addition, a plurality of other pieces of information can be superimposed on the variable information.

In the present embodiment, the light guide 1
The LEDs 20-n that enter light into 2 are made into three primary colors of red, green and blue, but when the present invention is carried out, it is possible to have two or more colors. In this type of embodiment, the variable can be represented by any two colors. Also, other information can be superimposed on the variable information.

Further, in the above-mentioned embodiment, the speedometer 10 is provided in the form of a fan having a predetermined angle, but when the present invention is carried out, the speedometer 10 may be arranged in a straight line. . For example, if the shape of each light guide 12 is substantially rectangular when viewed from the top and a large number of these light guides 12 are arranged in the width direction and integrally molded, the speedometer can be displayed in the same bar graph as a known digital meter. You can

That is, each of the light guide portions 12 of this embodiment is changed in shape so as to have a substantially rectangular shape in a plane, and a large number of these light guide portions 12 are arranged adjacent to each other in the width direction so that the housing has a substantially bar shape in a plane. You can In this type of embodiment as well, the same effects as those of the above-described embodiments are obtained, and the variables can be expressed in a substantially linear form, and the changes can be expressed in a bar graph or only the position can be changed.

Further, as in the above embodiment, the LED 2 corresponding to the light guide portion 12 at a predetermined position according to the traveling speed.
The embodiment may also be provided with a control means for causing 0-n to emit light. Further, the LE that makes the light incident on each light guide 12
The embodiment in which D20-n has two or more colors can also be used. In this type of embodiment, the variable can be represented by any two colors. Also, other information can be superimposed on the variable information.

Further, as in the above-mentioned embodiment, the LEDs 20-n which enter the light into the light guide portion 12 are composed of red, green and blue LEDs.
It is also possible to adopt an embodiment in which primary colors are used. In this kind of embodiment, an arbitrary color can be expressed, and the variable can be expressed in detail by the color. In addition, a plurality of other pieces of information can be superimposed on the variable information.

By the way, the present invention may be embodied in other measuring instruments such as a tachometer in addition to the speedometer.
Furthermore, the electrical configuration of the present invention and its control program are not limited to the above embodiment. In addition, although the resolution of the pointer 13 in each of the above-described embodiments is set to 5 km / h, the pointer 1 is set according to the size of the LED 20-n, the light emission characteristics, and the like.
The resolution of 3 may be 1 km / h to 4 km / h, or 6 km / h or more. Then, the light guide portion 12 of the above embodiment
May have a substantially trapezoidal cross section that becomes thinner toward its inner peripheral end (right end in FIG. 5). Further, like the light guide portion 12 of the above-described embodiment, it may be a long box shape extending in the length direction with the same thickness.

Next, the electrical configuration and operation of the vehicle meter of this embodiment will be described.

The control unit of the control means for controlling the light emission is composed of a CPU, a ROM, a RAM and the like which constitute a microcomputer, and is used for speed display control by a pointer. Also,
The control unit is provided to execute the main program shown in FIG. 16 as a part of the circuit shown in FIG. 15, for example.

FIG. 15 is a block diagram showing the circuit configuration of the entire vehicle meter of the first embodiment of the present invention. FIG.
6 is a flow chart showing the overall operation of the vehicle meter of the first embodiment of the present invention.

In FIG. 15, the detection signal from the speed sensor 202 is sent to the control unit 2 via the waveform shaping circuit 203.
It is inputted to the counter 204 of No. 05 and is counted in a unit of a predetermined time. Then, the count value is stored in the storage circuit 206, and the record information is input to the driver 201, and each LED unit 70 by the driver 201 is recorded.
It is used for light emission control of the LED groups of (A) to 70 (G).

In this embodiment, the driver 2
01, the speed sensor 202, the waveform shaping circuit 203, and the control unit 205 constitute a control means.

Next, the flowchart of FIG. 16 will be described.

First, in step S1, the speed sensor 20
When the rising edge of the signal from No. 2 is detected, the gate circuit (not shown) is opened in step S2 to convert the vehicle speed signal into the waveform shaping circuit 2
03 to the counter 204, and the counter 204
Counting is started. Then, when the preset measurement time has elapsed in step S3, the gate circuit is closed in step S4, and the counting operation by the counter 204 is stopped. Next, in step S5, the count data V2 of the counter 204 and the stored data V1 that is the current display speed data are compared, and the driver 201 is counted in step S6 only when the difference V1-V2 between them is 5 km / h or more. Data V2 is sent. Based on this new count data V2, the driver 201 changes the speed display by the LED 20-n of any of the LED units 70 (A) to 70 (G) in step S7. That is, in the speedometer 10, the LE corresponding to the pointer 13 that displays the traveling speed immediately before is displayed.
LED 2 of any of D units 70 (A) to 70 (G)
While turning off 0-n, the pointer 13 at the angular position corresponding to the traveling speed of the count data V2 is calculated, and the pointer 13 is calculated.
LED 20-n of any of the LED units 20 corresponding to
Is newly driven to emit light. The emission color of the speed display LED unit 20 may be a single color of red, green or blue, or any color obtained by mixing these. Then, in step S8, the count data V2 is stored in the storage circuit 206 to be stored data V1,
In step S9, the control unit 205 clears the counter 204, and the above operation is repeated.

Incidentally, the whole operation itself is performed by the driver 2
The control operation is the same as that of the conventional speedometer except for the display control of the pointer 13 using any of the LEDs 20-n of the LED units 70 (A) to 70 (G) by 01.
In the speed display control operation, the LED units 70 (A) to 70 (70) corresponding to the speed display pointer 13 are used.
Only one of the LEDs (G) 20-n emits light, and the pointer 1
Although only 3 emits or lights up in a predetermined color, all the LED units 70 (A) to 70 (G) are arranged in order to make the contrast between the entire speedometer 10 and the pointer 13 during speed display more clear. A color that matches the color of the pointer 13 for speed display in a balanced manner, for example, is made to emit white light,
The entire speedometer 10 may be lit in that color. Further, another control method may be used as long as a signal indicating the traveling speed can be input to the control unit 205. In addition, the LED unit 70 (A) installed inside each pointer 13
~ 70 (G), as described above, does not include LEDs 70 (A) to 70 (G) of three colors of red, green and blue,
It may be configured by LEDs 70 (A) to 70 (G) of any one color. However, the LED units 70 (A) -7
0 (G) with two or three color LEDs 70 (A) to 70
With (G), various emission colors of the pointer 13 can be selected, and the design effect is increased.

In addition, external information, for example, abnormal operation such as abnormal operation of a specific part of the vehicle, abnormal proximity to an obstacle, or alarm information is input, and a large number of LED units of the speedometer 10 are input according to the external information. 70 (A) to 70 (G)
Any one or all of them are lit and the corresponding pointer 1
3 or speedometer 1 excluding pointer 13 showing speed
It is possible to emit the whole 0 in a predetermined color and superimpose the information on the pointer 13 information during speed display. This way,
The external information can be displayed on the speedometer that most attracts the driver's attention while driving the vehicle, and the driver's attention can be effectively given.

[0108]

As described above, in the vehicle meter according to the first aspect of the present invention, one surface of a substantially rectangular shape is used as the display surface of the vehicle meter, and a large number of light guide portions and one end in the length direction of the light guide portions are provided. A light source that emits light, wherein the light source connects a plurality of LEDs that seal LED chips of a plurality of colors and are connected and arranged in a specific direction, and between the LEDs, and between the connected LEDs. Arranged substantially in parallel, the color-based lead base portion provided for each of a plurality of integrated color, and the end portion is disposed at a position adjacent to the lead base portion located outside of the plurality of color-based lead base portions, It has a common lead base part corresponding to the LED chips of a plurality of colors of the plurality of LEDs.

Therefore, lighting control of a plurality of LEDs is performed by the color-specific lead bases corresponding to the LED chips of a plurality of colors and the common lead base common to the color-specific lead bases, and the LEDs are lit in arbitrary colors by time division. You can Also, since the integration densities such as the pitch and the number of LEDs between the plurality of LEDs are arranged substantially parallel to each other, the integration density can be arbitrarily set by making the lead bases for each color flexible, curving or bending. it can. Further, since the plurality of lead bases for each color and the common lead base are integrally fixed by the package resin forming the plurality of LEDs, they can be used to display the shape of the display unit of any substantially rectangular one scale. Becomes Therefore, it is possible to reduce the number of parts of the entire applied part, reduce the cost, and improve the design. Further, by appropriately setting the inclination angle, the arrangement position, etc. at the time of assembling on the meter panel, the amount of light reaching the user can be dramatically increased, and the visibility can be greatly improved.

A vehicle meter according to a second aspect of the present invention is a light meter in which a flat surface having one end in the length direction wider than the other end has a substantially trapezoidal shape, and one end in the length direction is on the outer peripheral side and the other end is on the inner peripheral side. And a light source that emits light from one end of the light guide in the length direction, the light source sealing a plurality of LED chips of a plurality of colors and connecting and arranging the LEDs in a specific direction.
And the LED-based lead bases that connect the LEDs and are arranged substantially parallel to each other between the connected LEDs, and are integrated into a plurality of colors, and a position adjacent to the color-lead bases. A common lead base portion is provided which has a common end corresponding to the LED chips of a plurality of colors of the plurality of LEDs.

Therefore, the lighting control of the plurality of LEDs is performed by the color-specific lead bases corresponding to the LED chips of a plurality of colors and the common lead base common to the color-specific lead bases, and the LEDs are lit in arbitrary colors by time division. You can Also, since the integration densities such as the pitch and the number of LEDs between the plurality of LEDs are arranged substantially parallel to each other, the integration density can be arbitrarily set by making the lead bases for each color flexible, curving or bending. it can. Since the plurality of color-based lead bases and the common lead base are integrally fixed by the package resin that forms the plurality of LEDs, the shape of the display unit of one arbitrary scale having a substantially trapezoidal shape can be displayed as a whole. It becomes possible to use a fan shape. Therefore,
It is possible to reduce the number of parts of the entire applied part, reduce the cost, and improve the design. Further, by appropriately setting the inclination angle, the arrangement position, etc. at the time of assembling on the meter panel, the amount of light reaching the user can be dramatically increased, and the visibility can be greatly improved.

According to the vehicle meter of claim 3, the common lead base is arranged substantially at right angles to the plurality of color-specific lead bases of the LED unit according to claim 1 or 2. In addition to the effect of claim 1 or claim 2, the connection between a plurality of LEDs is simplified, and LE
The pitch between D can be narrowed. Further, since the common lead base is drawn out at a substantially right angle with respect to the plurality of color-specific lead bases, mounting is easy even when used as a display means, and the distance between the common lead bases is L.
Since the pitch between the EDs can be set, the work of connecting the leads is easy.

According to a fourth aspect of the present invention, there is provided a vehicle meter in which one LED chip is provided for a plurality of color-specific lead base portions according to any one of the first to third aspects and a common lead base portion is provided. Two LED chips are arranged, and in addition to the effect according to any one of claims 1 to 3,
It is possible to directly form the LED chip on the color-based lead base and the common lead base in conformity with the technology for manufacturing the LED chip.

According to a fifth aspect of the present invention, there is provided a vehicle meter in which the color-specific lead base portion and the common lead base portion on which the LED chip according to any one of the first to third aspects is arranged are
In addition to the effect according to any one of claims 3 to 4, a recessed hole is formed, and one of the plurality of color-based lead bases is formed substantially at the center of the recessed hole, and one common lead base is provided. Two L
Since the ED chip is arranged, the light can be efficiently guided to the display section of the LED.

A vehicle meter according to a sixth aspect of the present invention is the vehicle meter according to any one of the first to fifth aspects, and further covers the entire package resin facing the top of the package resin of the LED. In addition, a light scattering means for making the light emission within a predetermined angle range from the emission central axis of the LED semi-transmissive and scattered is added.

Therefore, the light emitted from the LED is diffused in all directions around the light emission center axis and travels in the light emitting direction, while the light diffusing means arranged facing the top of the LED emits the light emitted from the LED. A semi-transmission state and a scattering state are set over a predetermined angle range from the emission central axis. Then, the light from the LED is weakened and scattered by the light scattering means, and the entire LED is blurred and L
The ED unit emits light with a substantially uniform luminous intensity distribution. Therefore, the light from the LED does not directly enter the application site which is the illumination target to project the shape or contour of the LED, and the contour line of the LED is not visually recognized from the outside. As a result, it is possible to reduce the number of parts of the entire application site, reduce the cost, and improve the design. In particular, a separate part is not required to blur the contour of the LED at the application site, and the workability of assembly can be improved.

According to a seventh aspect of the present invention, in an LED unit, a plurality of LEDs, which are sealed with LED chips of a plurality of colors and are connected in a specific direction, are connected to the LEDs, and the LEDs connected to each other are substantially parallel to each other. A color-based lead base portion provided for each of a plurality of colors integrated with each other, and an end portion disposed at a position adjacent to the plurality of color-based lead base portions, to form an LED chip of a plurality of colors of the plurality of LEDs. And a corresponding common lead base.

Therefore, the lighting control of the plurality of LEDs is performed by the color-specific lead bases corresponding to the LED chips of a plurality of colors and the common lead base common to the color-specific lead bases, and at the same time, the LEDs are lit in arbitrary colors. You can Also, since the integration densities such as the pitch and the number of LEDs between the plurality of LEDs are arranged substantially parallel to each other, the integration density can be arbitrarily set by making the lead bases for each color flexible, curving or bending. it can. Since the plurality of color-specific lead base portions and the common lead base portion are integrally fixed by the package resin forming the plurality of LEDs, it is possible to display any shape. Therefore, it is possible to reduce the number of parts of the entire applied part, reduce the cost, and improve the design.

Since the LED unit according to claim 8 has the common lead base arranged substantially at right angles to the plurality of color-specific lead bases of the LED unit described in claim 7, the effect of claim 7 is obtained. In addition, the connection between the plurality of LEDs becomes simple, and the pitch between the LEDs can be narrowed. Since the common lead base is drawn out at a substantially right angle with respect to the plurality of color-specific lead bases, the mounting is easy even when it is used as a display means, and the common lead bases are separated from each other by a distance between LEDs. Since the pitch can be used, the work of connecting the leads is easy.

According to a ninth aspect of the present invention, there is provided an LED unit, wherein one LED chip is provided for each of the plurality of color-specific lead bases according to the seventh or eighth aspect, and two LED chips are provided for a common lead base.
Individual LED chips are arranged, and in addition to the effect according to claim 7 or claim 8, the LED chip is directly attached to the color-specific lead base and the common lead base in accordance with the technology for manufacturing the LED chip. Can be formed.

According to a tenth aspect of the present invention, there is provided an LED unit in which the color-specific lead base portion and the common lead base portion on which the LED chip according to any one of the seventh to ninth aspects is arranged are provided. In addition to the effect described in any one of,
Since a recessed hole is formed and one LED chip is arranged at any one of a plurality of color-based lead bases and two LED chips are arranged at a common lead base, the LED display section is formed. The light can be efficiently guided to.

[Brief description of drawings]

FIG. 1 is a front view showing an entire vehicle meter to which a vehicle meter according to an embodiment of the present invention is applied.

FIG. 2 is a plan view showing a speedometer as a vehicle meter according to an embodiment of the present invention.

FIG. 3 is a plan view showing a main part of a vehicle meter according to an embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a main part of the vehicle meter according to the embodiment of the present invention.

FIG. 5 is an end view taken along the line AA of FIG. 2 showing the vehicular meter of the embodiment of the invention cut in the radial direction.

FIG. 6 is a partial plan view showing a usage state of a speedometer as a vehicle meter according to an embodiment of the present invention.

FIG. 7 is a plan view (a), a front view (b) and a side view (c) showing an LED unit according to an embodiment of the present invention.

FIG. 8 is an exploded plan view of a main part of the LED unit according to the embodiment of the present invention.

FIG. 9 is an electrical equivalent circuit of the LED unit according to the embodiment of the present invention.

FIG. 10 is a sectional view showing an example of a light guide portion according to an embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a method for manufacturing a light guide portion according to an embodiment of the present invention, in which FIG.
(B) shows a potting process, respectively.

FIG. 12 is a cross-sectional view showing an example of a light guide portion according to an embodiment of the present invention.

FIG. 13 is a cross-sectional view showing an example of the light guide portion according to the embodiment of the present invention.

FIG. 14 is a cross-sectional view showing an example of a light guide portion according to an embodiment of the present invention.

FIG. 15 is a block diagram showing a circuit configuration of an entire vehicle meter according to the embodiment of the present invention.

FIG. 16 is a flowchart showing the overall operation of the vehicle meter according to the embodiment of the present invention.

[Explanation of symbols]

10 Speed Meter 11 Housing 12 Light Guide 20-n LED 20A Package Resin 100R Red LED Chip 100G Green LED Chip 100B Blue LED Chip 70 (A) to 70 (G) LED Unit 81B, 82G, 83R Lead Base for Each Color 91C, 92C, 93C, 94C, 95C common lead base

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Takemasa Yasukawa 1 Ochiai, Nagahata, Kasuga-cho, Nishi-Kasugai-gun, Aichi Toyoda Gosei Co., Ltd. Toyoda Gosei Co., Ltd.

Claims (10)

[Claims] 1. A vehicle meter comprising a substantially rectangular one surface as a display surface of a vehicle meter, a plurality of arranged light guide portions, and a light source for injecting light from one end of the light guide portions in a length direction thereof. The light source encapsulates light emitting diode chips of multiple colors,
A plurality of light emitting diodes arranged in a specific direction are connected, and the plurality of light emitting diodes connected to each other are connected, and
Color-based lead bases that are arranged substantially in parallel between the connected light-emitting diodes and are provided for each of a plurality of colors, and end portions are positioned adjacent to the plurality of color-based lead bases that are integrated. And a common lead base portion corresponding to the light emitting diode chips of a plurality of colors of the plurality of light emitting diodes. 2. A light guide part having a substantially trapezoidal flat surface with one end in the length direction wider than the other end, and a plurality of light guide parts having one end in the length direction on the outer peripheral side and the other end on the inner peripheral side, and the length of the light guiding part. In a vehicle meter including a light source that enters light from one end in the vertical direction, the light source seals light emitting diode chips of a plurality of colors,
A plurality of light emitting diodes arranged in a specific direction are connected, and the plurality of light emitting diodes connected to each other are connected, and
Arranged substantially parallel between the light emitting diodes connected to each other, the color-based lead base portion provided for each of a plurality of integrated color, and the end portion is disposed at a position adjacent to the integrated lead base portion, A common lead base part corresponding to a plurality of light emitting diode chips of the plurality of light emitting diodes and a common lead base portion. 3. The vehicle meter according to claim 1, wherein the common lead base is arranged substantially at right angles to the plurality of color-specific lead bases. 4. The light emitting diode chip according to claim 1, wherein one light emitting diode chip is provided for each of the plurality of color lead bases and two light emitting diode chips are provided for the common lead base. The vehicle meter according to any one of the above. 5. The lead base portion for each color and the common lead base portion on which the light emitting diode chips are disposed form a recessed hole, and one is provided substantially at the center thereof for any one of the lead base portions for each color. 2. The vehicle meter according to claim 1, wherein two light emitting diode chips are arranged with respect to the common lead base. 6. Further, the package resin is covered so as to face the top of the package resin for sealing the light emitting diode chip of the light emitting diode, and the light emitting diode emits light within a predetermined angle range from the light emitting central axis of the light emitting diode. The vehicle meter according to any one of claims 1 to 5, further comprising a light scattering means in a transmitted and scattered state. 7. A plurality of light emitting diodes formed by encapsulating light emitting diode chips of a plurality of colors and connected in a specific direction, and connecting the plurality of connected light emitting diodes, and
Arranged substantially parallel between the light emitting diodes connected to each other, the color-based lead base portion provided for each of a plurality of integrated color, and the end portion is disposed at a position adjacent to the integrated lead base portion, A light-emitting diode unit, comprising: a common lead base that is common to light-emitting diode chips of a plurality of colors of the plurality of light-emitting diodes. 8. The light emitting diode unit according to claim 7, wherein the common lead base is arranged substantially at right angles to the plurality of color-specific lead bases. 9. The light emitting diode chip according to claim 7, wherein one light emitting diode chip is arranged for the plurality of color-based lead bases and two light emitting diode chips are arranged for the common lead bases. Light emitting diode unit. 10. The lead base portion for each color and the common lead base portion on which the light emitting diode chip is disposed form a recessed hole, and one is provided substantially at the center thereof for any one of the lead base portions for each color. 9. The light emitting diode unit according to claim 7 or 8, wherein two light emitting diode chips are arranged with respect to the common lead base.