JP3823663B2 - Light emitting diode lamp device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is used for a display panel such as a vehicle meter or a surface light emitter, and more particularly to a light emitting diode lamp device for mounting a light emitting diode used for illumination.
[0002]
[Prior art]
In general, illumination of a vehicle meter or the like is performed by a bulb (light bulb). Moreover, it is published in Unexamined-Japanese-Patent No. 10-197671 that illumination of a meter is performed with a full color light emitting diode (RGB-LED).
[0003]
According to the technique described in this publication, RGB-LEDs are arranged on the end face of the light guide disposed in the meter, and light from the RGB-LEDs is introduced into the light guide, and the plane of the light guide It is emitted from the entire meter. The RGB-LED is mounted on a dedicated flexible substrate, and by using the RGB-LED, the meter can be illuminated with an arbitrary color by a control circuit mounted on the flexible substrate.
[0004]
[Problems to be solved by the invention]
However, a dedicated RGB-LED can be arranged for a specified application as in the technique described in Japanese Patent Laid-Open No. 10-197671.
[0005]
However, when versatility is demanded, RGB-LEDs mounted on a dedicated flexible board cannot be used, and even if it is used in the same manner as a conventional bulb (bulb), a bulb (bulb) and a light emitting diode Due to the difference in standard size, it could not be easily replaced and changed.
[0006]
Therefore, an object of the present invention is to provide a light-emitting diode lamp device having general versatility without being restricted by the difference in size between a bulb (light bulb) and the light-emitting diode itself.
[0007]
[Means for Solving the Problems]
The light-emitting diode lamp device according to claim 1 includes one or more light-emitting diodes, a power conversion circuit that converts the light-emitting diodes to emit light and current from an input power supply, and the one or more light-emitting diodes at a tip portion. And a package made of a synthetic resin that has a cap that covers the one or more light-emitting diodes, accommodates the power conversion circuit, and has an external structure that is attachable to a mounting hole. The external structure attachable to the mounting hole of the package has a large diameter part and a small diameter part protruding inwardly from the large diameter part, and the fitting part side of the package A projection formed with a predetermined outer diameter on the outside of the projection, and an elastic contact projection formed around the projection and extending in an inverted L shape in the circumferential direction, and elastically contacting the mounting hole, and an end of the small-diameter portion Part It consists of a locking rib having an engaging projection that engages with.
[0008]
The one or more light emitting diodes may be light emitting diodes that output white or another single color or a composite color of a plurality of colors. Further, a plurality of chips may be enclosed in a single shell-shaped synthetic resin. The power conversion circuit converts the input power supply into a voltage and a current for causing the light emitting diode to emit light, and can be a circuit that outputs constant voltage control or constant current control output or PWM control output. The package accommodates and fixes one or more light-emitting diodes at the tip, accommodates the power conversion circuit therein, and has an external structure that can be attached to a mounting hole formed in a flat plate. What is necessary is just a container which consists of a synthetic resin which has.
[0010]
The package does not necessarily require a cap that covers one or more light-emitting diodes, but efficient diffusion can be achieved by providing a cap. Further, by covering the light emitting diode with a cap, it also functions as mechanical protection for the light emitting diode.
[0014]
The elastic contact projection that comes into contact with the elastic member may have a structure that can elastically maintain a contact state with respect to the periphery of the attachment hole, and the engagement protrusion restricts relative rotation with respect to the periphery of the attachment hole. If it is.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below.
[0016]
1A and 1B are explanatory views showing a use state of the light-emitting diode lamp device according to Embodiment 1 of the present invention. FIG. 1A shows a state before being attached to a bracket, and FIG. 1B shows a state attached to the bracket. is there. FIGS. 2A and 2B are explanatory views showing a part development view of the light-emitting diode lamp device according to Embodiment 1 of the present invention. FIG. 2A is a part development view seen from the upper part, and FIG. 2B is a part development view seen from the lower part. 3 is a perspective view of the package of the light-emitting diode lamp device according to the first embodiment of the present invention, and FIG. 4 is an enlarged perspective view of the main part of the package of the light-emitting diode lamp device according to the first embodiment of the present invention.
[0017]
In the figure, a package 1 made of synthetic resin is composed of two parts, a main body 1A and a locking body 1B. The main body 1A has a bullet-type light emitting diode lamp (hereinafter simply referred to as “LED”) 3 having one end. A power conversion circuit 2 comprising a printed circuit board 2b mounted with a fitting portion 1a that maintains a fitted state when inserted inside and an electronic component 2a that converts voltage and current to emit light from the LED 3 from the input power supply is inserted. A flexible guide groove 1b is formed. Specifically, the guide groove 1b holds the printed circuit board 2b on which the electronic component 2a is mounted on both sides, and the insertion state is maintained so that the guide groove 1b is not easily detached or rattled.
[0018]
The end 1c opposite to the fitting portion 1a of the main body 1A is open, and is disposed at two locations on the outer periphery of the main body 1A in a state where the lead wire 2c is led out from the notch 1f by the locking body 1B. The engagement protrusion 1d and the engagement port 1e of the engagement body 1B can be engaged with each other so that they can be integrated. In this state, the guide groove 1b is maintained in a stored state so that the printed circuit board 2b on which the electronic component 2a is mounted is not easily detached or rattled.
[0019]
There is a protruding portion 1h formed with a predetermined outer diameter on the outside of the fitting portion 1a side of the main body 1A of the package 1 made of synthetic resin. Further, the protruding portion 1h rises from the main body 1A side around the protruding portion 1h. A locking rib 1i extending in an inverted L shape in the circumferential direction is formed. The locking rib 1i has an elastic contact protrusion 1j that makes elastic contact with an attachment hole 7 that is formed in a flat plate surface of the bracket 6 described later, and an engaging protrusion 1k that engages.
[0020]
Further, on the outer side of the main body 1A of the package 1 on the side of the fitting portion 1a, an insertion portion 1m that protrudes in the circumferential direction from the protruding portion 1h formed with a predetermined outer diameter and is formed with an outer shape smaller than the protruding portion 1h is formed. ing. Around the insertion portion 1m, cap locking protrusions 1n and fitting protrusions 1p are formed at two locations on the outer periphery.
[0021]
The cap 4 diffuses light emitted from the LED 3 over a wide range and protects the LED 3 from the outside, and is formed in a substantially bell shape. The opening end of the cap 4 has a notch recess 4b to be fitted into the fitting projection 1p, and the cap engaging port 4a into which the locking projection 1d is inserted to be engaged on the opening side. have.
[0022]
Here, the LED 3 is mounted on a printed circuit board 2b that constitutes the power conversion circuit 2 together with the electronic component 2a. The power conversion circuit 2 is an electronic circuit that converts a voltage (current) for lighting a bulb (light bulb) into a voltage / current for lighting the LED 3, and performs constant voltage control or constant current control output or PWM control. The circuit can be an output, and is usually composed of a resistor circuit or an inverter circuit.
[0023]
The LED 3 from the input power supply can be a light emitting diode that outputs white or another single color or a composite color of a plurality of colors. Further, a plurality of chips may be enclosed in a single shell-shaped synthetic resin.
[0024]
Further, the package 1 accommodates and fixes one or more LEDs 3 at the front end portion, accommodates the power conversion circuit 2 therein, and can be attached to a mounting hole 7 whose external structure is formed in the bracket 6. Any container made of a synthetic resin having a simple mechanism may be used.
[0025]
The main body 1A, the locking body 1B, the power conversion circuit 2, the LED 3, and the cap 4 of the package 1 of the light-emitting diode lamp device 10 configured as described above are configured as follows.
[0026]
From the opening of the end 1c of the main body 1A of the package 1 made of synthetic resin, the printed board 2b on which the LED 3 and the electronic component 2a constituting the power conversion circuit 2 are mounted is inserted according to the guide groove 1b, and the LED 3 is inserted into the main body 1A. It inserts in the fitting part 1a and fixes LED3 to the fitting part 1a.
[0027]
First, in a state where the lead wire 2c connected to the printed circuit board 2b is taken out from the opening of the end 1c of the main body 1A, the locking body 1B is fitted into the end 1c of the main body 1A, and the outer periphery of the main body 1A is inserted. The locking projections 1d disposed at the two locations are engaged with the engagement opening 1e of the locking body 1B to integrate them.
[0028]
Further, the cap engagement projection 4a and the notch recess 4b of the cap 4 are made to correspond to the cap locking projection 1n and the fitting projection 1p formed around the insertion portion 1m on the fitting portion 1a side of the main body 1A of the package 1. The cap locking projection 1d of the main body 1A and the cap engagement port 4a of the cap 4 are engaged with each other so as to be integrated.
[0029]
The connector 5 is electrically and mechanically connected to the opposite end of the printed circuit board 2b of the lead wire 2c.
[0030]
In this way, the light-emitting diode lamp device 10 according to the present embodiment is assembled and assembled as follows.
[0031]
As shown in FIG. 1, a bracket 6 made of a synthetic resin having a predetermined thickness is provided with a mounting hole 7, and the mounting hole 7 occupies approximately a quarter of two opposing positions. It is comprised from the diameter part 7a and the small diameter part 7b which occupies substantially 1/4 circumference of the two places which oppose. That is, the mounting hole 7 includes a large-diameter portion 7a having a circumference slightly wider than ¼ circumference of two opposing locations, and a small-diameter portion 7b having a circumference slightly narrower than ¼ circumference of two opposing locations. It is comprised so that it may protrude inward from the large diameter part 7a.
[0032]
The pair of locking ribs 1i of the main body 1A of the package 1 are inserted into the pair of large diameter portions 7a of the mounting hole 7, and the main body 1A of the package 1 of the light emitting diode lamp device 10 is mounted at the position where the insertion is completed. The engagement protrusion 1k rotates in the direction in which the small protrusion 7b of the hole 7 rides against the elasticity of the locking rib 1i. By this rotation, the elastic contact projections 1j of the pair of locking ribs 1i of the main body 1A of the package 1 ride on the small diameter portion 7b, and the engagement protrusion 1k rides on the end of the small diameter portion 7b by its own elastic force. It descends from the small-diameter portion 7b and comes into contact with the end portion. At the same time, the other end of the small diameter portion 7b comes into contact with the rising portion of the reverse substantially L-shaped locking rib 1i.
[0033]
Therefore, in this state, the pair of small diameter portions 7b of the mounting hole 7 are held by the rising portion of the reverse substantially L-shaped locking rib 1i acting as the locking rib and the engaging protrusion 1k, and are elastically contacted. Elasticity is imparted to the reverse substantially L-shaped locking rib 1i so that the protrusion 1j does not rattle between the small diameter portion 7b.
[0034]
Since the rising portion of the reverse substantially L-shaped locking rib 1i of the present embodiment is held by the locking rib 1i, it acts as a locking rib and engages with the elastic contact projection 1j. The protrusion 1k can be firmly integrated with the main body 1A. However, when the present invention is carried out, the engagement protrusion 1k may be provided at both ends of the locking rib 1i.
[0035]
FIG. 5 is a rear view showing a mounting relationship when the light-emitting diode lamp device according to Embodiment 1 of the present invention is used in a vehicle meter, and FIG. 6 is a cross-sectional view taken along a cutting line XX in FIG. FIG. 7 is a plan view of a dial sheet material attached to the vehicle meter shown in FIG.
[0036]
5 to 7, in the mounting holes 7-1 to 7-6 (7-2 to 7-4 not shown) provided in the bracket 6 of the housing 20 of the vehicle meter, the light-emitting diode lamp device 10 is provided. -1 to 10-6 (10-2 to 10-4 are not shown) are mounted. The meter drive unit 22 incorporates a circuit and a mechanism for driving the hands 23. A substantially plate-like light guide 21 is disposed on the inner surface of the bracket 6. Through holes 21-1 to 21-6 (21-2 to 21-4 are not shown) are formed in the light guide 21. The center of the LED 3 of the light-emitting diode lamp devices 10-1 to 10-6 is located at the center of the thickness of the vertical end faces of the through holes 21-1 to 21-6. A dial sheet material 24 shown in FIG. 7 is attached to the upper surface of the light guide 21. In addition, a liquid crystal 27 indicating an operation state of a specific function is disposed on the light guide 21.
[0037]
The transparent cover 25 prevents the hands 23 and the dial sheet material 24 from being touched by hand, and prevents entry of dust and the like. The design cover 26 made of a translucent material decorates the periphery of the dial sheet material 24.
[0038]
In the vehicle meter configured as described above, when the LEDs 3 of the light-emitting diode lamp devices 10-1 to 10-6 are turned on, the emitted light enters the light guide 21. The light incident on the light guide 21 is reflected by the outermost cut surface and is also reflected by the through holes 21-1 to 21-6, so that the entire surface of the light guide 21 emits a specific color substantially uniformly. . Therefore, characters and the like are displayed in the colors printed on the dial sheet material 24. Therefore, when the pointer 23 is rotated by the meter driving unit 22, characters and the like can be clearly indicated by the color printed on the dial sheet material 24.
[0039]
Further, with respect to the liquid crystal 27 located above the light emitting diode lamp devices 10-5 and 10-6, when the LED 3 of the light emitting diode lamp devices 10-5 and 10-6 is turned on, the emitted light is incident and the liquid crystal 27 is allowed to enter. Uniform illumination is possible.
[0040]
By the way, the light-emitting diode lamp device 10 of the present embodiment has one or more LEDs 3, a power conversion circuit 2 that converts voltage and current to cause the LEDs 3 to emit light from the input power supply, and one or more LEDs 3 at the tip. A body 1A made of a synthetic resin that can be housed and fixed and that houses the power conversion circuit 3 and can be attached to a mounting hole 7 formed in the external structure, and a package 1 made of a locking body 1B. It is.
[0041]
Accordingly, one or more LEDs 3 are accommodated and fixed at the tip, and the power conversion circuit 3 for converting the LED 3 to emit light and current is accommodated, and the external structure is attached to the mounting hole 7 drilled. The package 1 made of a flexible synthetic resin can have a structure compatible with the package socket of the valve, and can be electrically set to the same condition as the input of the valve by the power conversion circuit 3. More than one LED 3 can be replaced with a bulb. Moreover, one or more LED3 can be made into arbitrary luminescent colors.
[0042]
Further, the opening 1c on the opposite side of the fitting portion 1a of the main body 1A has an opening 1d provided in two positions on the outer periphery of the main body 1A in a state where the lead wire 2c is led out from the notch portion 1f. And the engaging port 1e of the locking body 1B can be engaged with each other so that the printed circuit board 2b on which the electronic component 2a is mounted in the guide groove 1b can be easily stored and maintained. .
[0043]
Further, since the package 1 of the light emitting diode lamp device 10 of the present embodiment further includes a cap 4 that covers one or more LEDs 3, the directivity characteristics of the one or more LEDs 3 can be arbitrarily set by the cap 4. In particular, it can be formed into a hemispherical directivity by forming it with a material that diffuses light. In particular, when the outer surface of the package 1 is provided with a texture or a diffusion material is added, the light distribution becomes more uniform. Further, if a lens is partially formed, it is possible to obtain spot illumination characteristics.
[0044]
Since the package 1 of the light-emitting diode lamp device 10 of the present embodiment is a standard that is compatible with the package socket of the bulb, the bulb and the light-emitting diode lamp device 10 can be switched between each other. It becomes.
[0045]
Furthermore, the external structure that can be freely mounted on the mounting hole 7 of the package 1 of the light-emitting diode lamp device 10 of the present embodiment is an elastic contact protrusion that elastically contacts the perforated mounting hole 7 that protrudes inward. 1j and the engagement protrusion 1k which restrains relative rotation with respect to the attachment hole 7.
[0046]
Therefore, the pair of small diameter portions 7b of the mounting hole 7 are held by the engaging projections 1k, and are also substantially reverse L-shaped so that the elastic contact projections 1j do not rattle between the small diameter portions 7b. Since elasticity can be given between the locking ribs 1i, the light emitting diode lamp device 10 can be firmly attached.
[0047]
By the way, in embodiment shown in FIG. 1 thru | or FIG. 4, although LED3 accommodated in the package 1 of the light emitting diode lamp apparatus 10 is what was made into the single LED lamp, when implementing this invention, it is LED. One or more chips may be disposed on the substrate, and the optical axis of the emitted light may be the same as or perpendicular to the axial direction of the package 1. One or more LED chips may be continuously arranged in the same direction as the axial direction of the package 1 or may be continuously arranged in a direction perpendicular to the axial direction of the package 1.
[0048]
【The invention's effect】
As described above, the light-emitting diode lamp device according to claim 1 includes a power source conversion circuit for converting one or more light-emitting diodes to emit light and voltage from an input power source, and the one or more light-emitting diodes at a tip portion. A package made of a synthetic resin, which has a cap which is fixedly accommodated and covers the one or more light-emitting diodes, accommodates the power conversion circuit, and whose external structure is attachable to an attachment hole; The external structure attachable to the mounting hole of the package has a large diameter portion and a small diameter portion protruding inwardly from the large diameter portion, and on the fitting portion side of the package. A protrusion formed with a predetermined outer diameter on the outer side, an elastic contact projection formed around the protrusion and extending in an inverted L shape in the circumferential direction, and elastically contacting the mounting hole, and an end of the small diameter portion Engage to engage It is made of engaging rib having an electromotive Prefecture.
Therefore, one or more LEDs are accommodated and fixed at the tip, and a power conversion circuit for converting the input power supply into voltage and current for emitting the LEDs is accommodated, and its external structure can be attached to the mounting hole. Since the package is made of a synthetic resin package, the package can have the same mechanical structure as the package socket of the valve, and can be electrically set to the same condition as the input of the valve by the power conversion circuit. One or more LEDs can be replaced by a bulb. Moreover, one or more LED can be made into arbitrary luminescent colors. Therefore , the LED can be used in the same manner as the bulb without being restricted by the difference in size between the bulb and the LED itself, and can be provided with versatility.
[0049]
In addition, since the package includes a cap that covers one or more LEDs, the light distribution characteristics of the emitted light can be arbitrarily set. Also, one or more LEDs can be protected from mechanical external forces.
[0051]
Further, the external structure that can be attached to the mounting hole of the package has a protruding portion formed with a predetermined outer diameter on the outer side of the fitting portion side of the package and a circumferential direction formed around the protruding portion. A mounting hole that extends in an inverted L shape and includes a locking rib that elastically contacts the mounting hole and an engaging protrusion that engages with the end of the small-diameter portion and protrudes inwardly. On the other hand, since there are elastic protrusions that elastically contact with the periphery and engaging protrusions that restrain relative rotation with respect to the mounting hole , the protruding portion of the mounting hole is held by the engaging protrusion and elastic with the elastic contact protrusion. Therefore, it is possible to firmly attach the light emitting diode lamp device.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a use state of a light-emitting diode lamp device according to Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram showing an exploded view of the light-emitting diode lamp device according to Embodiment 1 of the present invention.
FIG. 3 is a perspective view of a package of the light-emitting diode lamp device according to Embodiment 1 of the present invention.
FIG. 4 is an enlarged perspective view of a main part of the package of the light-emitting diode lamp device according to Embodiment 1 of the present invention.
FIG. 5 is a rear view showing a mounting relationship when the light-emitting diode lamp device according to Embodiment 1 of the present invention is used in a vehicle meter.
6 is a cross-sectional view taken along a cutting line XX in FIG. 5. FIG.
FIG. 7 is a plan view of a dial sheet material attached to the vehicle meter shown in FIG.
[Explanation of symbols]
1 Package 2 Power conversion circuit 3 LED
4 Cap 6 Bracket 7 Mounting hole 10 Light-emitting diode lamp device 1k Engaging protrusion 1j Elastic contact protrusion 1A Main body 1B Locking body

Claims (1)

One or more light emitting diodes;
A power conversion circuit for converting the input power supply into a voltage and a current for causing the light emitting diode to emit light, and
The one or more light emitting diodes are accommodated and fixed at a tip portion, and have a cap that covers the one or more light emitting diodes. The power conversion circuit is accommodated, and the external structure is attached to a mounting hole. And a package made of free synthetic resin ,
The external structure that can be attached to the mounting hole of the package has a large diameter portion and a small diameter portion that protrudes inward from the large diameter portion, and an outer side on the fitting portion side of the package. A protrusion formed with a predetermined outer diameter, and an elastic contact projection formed around the protrusion and extending in an inverted L shape in the circumferential direction, and elastically contacting the mounting hole, and an end of the small diameter portion A light-emitting diode lamp device comprising a locking rib having an engaging protrusion to be engaged .

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