JPH11283409A - Light source device and display device - Google Patents

Abstract

(57) [Summary] [Problem] To display an alarm with good visibility as required. An LED having a polarity; a circuit board electrically connected to the LED and provided with means for blinking the LED at 0.5 to 10 Hz; a socket body 2 for housing the circuit board; An internal terminal portion that is housed in the main body and is electrically connected to a contact of a circuit board, and is electrically connected to the internal terminal portion and is fixed in a state of protruding outside the socket body. External terminals 9a, 1
0a, and contact terminals 9 and 10 having Oa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light source device and a display device suitable for a lamp for illuminating an in-vehicle meter, a warning light, and the like.

[0002]

2. Description of the Related Art Conventionally, as an example of a socket for a display lamp such as an on-vehicle meter or a warning light, for example, Japanese Utility Model No. 7-220
A lamp socket described in Japanese Patent Application Publication No. 68 (hereinafter referred to as Conventional Technology 1) and a light emitting diode assembly described in Japanese Utility Model Application Publication No. 6-17326 (hereinafter referred to as Conventional Technology 2) are known.

In the prior art 1, a lamp socket equipped with an incandescent lamp is inserted into an insertion hole of a printed circuit board, and the lamp socket is mounted on the printed circuit board.
Since the light source is an incandescent lamp, there are various problems in life, brightness, temperature, and the like, and there is a problem that it is difficult to realize maintenance-free.

On the other hand, the prior art 2 uses a light-emitting diode (hereinafter, referred to as an LED) having a long life, high brightness, and excellent cold resistance and heat resistance as a light source. it can.

[0005]

However, the prior art 2 has a problem that an alarm cannot be displayed by blinking or the like since the LED is exclusively used by being constantly lit.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a light source device and a display device capable of displaying an alarm with good visibility as required. .

[0007]

According to the first aspect of the present invention, there is provided a light source having a polarity; a circuit board electrically connected to the light source, the circuit board including means for blinking the light source at 0.5 to 10 ° z; A socket body for accommodating the circuit board; an internal terminal housed in the socket body and electrically connected to the contacts of the circuit board, and electrically connected to the internal terminal section; A contact terminal having an external terminal portion fixed in a state of protruding to the outside.

According to the present invention, since a light source having a polarity such as an LED (light emitting diode) is blinked at 0.5 to 10 Hz, the user can be alerted and can be visually recognized as some kind of alarm. Moreover, since the blinking interval is relatively slow, the visibility of the alarm can be improved.

Therefore, the light source can be used as a light source device of a warning light. If the light source is an LED, the lamp life is long, and the maintenance of the warning light can be made free.

According to a second aspect of the present invention, there is provided a light source device according to the first aspect, and an insertion hole through which a socket body of the light source device is inserted.
An engagement hole coupled to the insertion hole and removably engaged with the locking portion; and an electrode formed on the entire periphery of the insertion hole and electrically connected to the external terminal of the light source device. A display device comprising: a printed circuit board configured; a display unit illuminated by the light source device; and a housing that houses the light source device, the printed circuit board, and the display unit.

According to the present invention, since the light source device according to the first aspect is provided, substantially the same operation and effect as the light source device can be obtained.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
A description will be given based on FIG. In these figures, the same or corresponding parts are denoted by the same reference characters.

FIG. 1 is a front view of a light source device 1 according to a first embodiment of the present invention, FIG. 2 is a plan view of the light source device 1 when LEDs (light emitting diodes) are omitted, and FIG. −
FIG. 4 is a sectional view taken along the line IV in FIG. 2, and FIG. 5 is a bottom view in FIG. As shown in these figures, the light source device 1
LE is inserted into the insertion hole 3 of the socket body 2 which is formed in a cylindrical shape from, for example, 66 nylon resin having electric insulation.
At least a base end 4a of a D (light emitting diode) 4 and a flat circuit board 5 for turning on the LED 4 are inserted and fixed. A lighting circuit for the LEDs 4 is provided on the circuit board 5, and circuit components such as resistors and capacitors are mounted on both surfaces or one surface thereof.

The circuit board 5 receives a blinking command signal from a control means mounted on a printed board 18 such as an on-vehicle meter, which will be described later.
There is provided a blinking means for supplying a 0 Hz alternating current and performing a mode for blinking about 0.5 to 10 times per second for a required time and displaying a required alarm. Also, this blinking O
N: OFF time is set to, for example, 51:49 (%),
The lighting time is set slightly longer than the light-off time.

The socket main body 2 is inserted into a circular insertion hole of a printed circuit board such as an on-vehicle meter, which will be described later, and has an insertion cylindrical portion 6 protruding to one side thereof and an outwardly extending outer diameter larger than the insertion cylindrical portion 6. A gripping knob 8 integrally protruding the flange 7 is concentrically and integrally connected in the axial direction.

On the outward flange 7, external terminals 9 of a pair of thin and conductive contact terminals 9, 10 having conductivity and elasticity are provided.
a, 10a are disposed so as to face each other in the diameter direction of the socket body 2.

As shown in FIG. 3, the socket body 2 has a pair of thin flat plate-like contact terminals 9 and 10 on the inner surface of the insertion hole 3 diametrically opposed to each other from the bottom surface of the socket body 2. A pair of guide grooves 1 of concave grooves to be fitted inward
1a and 11b are juxtaposed in the axial direction.

FIG. 6 is a front view of the contact terminals 9 and 10. The upper portion of the main bodies 9b and 10b has internal terminal portions which stand substantially perpendicularly from the left and right side edges in FIG. A pair of elastic tongue pieces 9c, 9d, 10c, 10d are integrally formed. These elastic tongues 9c, 9d, 10
The contact terminal bodies 9b and 1d are located at the lower portions of FIGS.
0b are separated from both side edges of the main body 9b, 10b.
Of the pair of elastic tongues 9c and 9d, 10c and 10d, as shown by broken lines in FIG. Both sides in the width direction of the substrate 5 are elastically held in the thickness direction.

External terminals 9a, 10a bent outward are integrally formed at the lower ends of the contact terminal bodies 9b, 10b, and these external terminals 9a, 10a are connected to the outside of the socket body 2 as described above. It is arranged on the orientation flange 7 so as to protrude outward. Beads 9e, 10e are respectively formed over substantially the entire length on the back surface in the width direction intermediate portion of each of the external terminals 9a, 10a, to enhance the mechanical strength of each of the external terminals 9a, 10a.

Further, as shown in FIG.
0 is a cut-and-raised tongue piece 9 at the upper part of its main body 9b, 10b.
6, the engaging projections 9g, 10g protruding outward are formed integrally with each other at the lower part in FIG. 6, and the cut-and-raised tongue pieces 9f, 10f are fixed at the lower ends in FIG. It protrudes outward.

Each of the contact terminals 9 and 10 thus configured
Are a pair of bottom openings 12 of the socket body 2 shown in FIG.
a, 12b are inserted into a pair of guide grooves 11a, 11b, respectively, and inserted inward in the axial direction, respectively. As shown in FIG. When the annular projection 3a slightly protruding inward at the axially intermediate portion of the insertion hole 3 in the inner side is climbed upward from below in FIG. 3, the leg is opened outward and the annular projection 3a FIG.
The upper end of the annular projection 3a contacts the lower surface of the annular projection 3a in FIG. For this reason, the annular projection 3a is sandwiched between the locking projections 9g and 10g and the cut-and-raised tongue pieces 9f and 10f.
Each contact terminal 9, 10 is fixed in the socket body 2.

The LED 4 is fixed to the circuit board 5 on the central axis in the axial direction. That is, LED4
Are a pair of lead frames 13 arranged side by side in the axial direction,
For example, semi-circular curved portions 13a and 14a are formed on the base 14 so as to protrude outward in the orthogonal direction from the axial center axis, and the distal ends of the curved portions 13a and 14a are formed as shown in FIG.
As shown in FIG. 5, the LED 4 is coaxially disposed on the circuit board 5 by being inserted into a pair of mounting holes 5a and 5b of the circuit board 5 and secured with the soldering fillet 15 at the insertion end projecting from the back side. In addition, they are electrically connected.

Further, the circuit board 5 is formed at a middle portion in the axial direction on one surface side and a pair of contacts 5c and 5d are separated from each other on both left and right sides to be substantially flush with each other, and these contacts 5c and 5d are formed.
Is a pair of mounting holes 5 a, via a lighting circuit of the circuit board 5.
5b.

The circuit board 5 on which the LED 4 is coaxially mounted is mounted on the insertion hole 3 of the socket body 2 after the pair of contact terminals 9 and 10 are mounted in the insertion hole 3 in FIG. Insert from. Then, both side edges of the circuit board 5 in the width direction are connected to the elastic tongue pieces 9c of each pair of the contact terminals 9, 10.
And 9d, 10c and 10d, respectively,
The elastic tongue 9c is inserted while being guided.
4 and 9d, 10c and 10d, the circuit board 5 is inserted firmly against the elastic force of the lower legs, as shown by the broken line in FIG.
Each of the elastic tongue pieces 9 of each contact terminal 9, 10
c and 9d and 10c and 10d are elastically held in the thickness direction, respectively,
The inner surfaces of one of the tips c and 9d and 10c and 10d are elastically pressed against a pair of contacts 5c and 5d on one surface of the circuit board 5, and are electrically connected.

On the outer surface of the insertion cylindrical portion 6 of the socket body 2, a pair of locking portions 1
6 and 17 are integrally protruded at positions substantially facing each other in the diameter direction. The locking portions 16 and 17 have openings 16a and 17a, respectively, on one side thereof, into which the peripheral portions of the insertion holes 19 of the printed circuit board 18 such as a vehicle-mounted meter shown in FIG. To the insertion hole 1 of the printed circuit board 18.
By rotating the socket body 2 around the axis in a state where the light source device 1 is inserted into the light source device 9, the peripheral edge of the opening of the insertion hole 19 is fitted to the openings 6 a and 7 a of the locking portions 6 and 7.
Is detachably mounted on the printed circuit board 18.

One of these locking portions 17 is connected to the other 16
Are formed larger and irregularly, and these locking portions 1
By associating the polarities of the LEDs 6 and 17 with the polarities of the LEDs 4 in advance, it is possible to easily and surely recognize the difference in the shape of the locking portions 16 and 17 and the polarities of the external terminals 9a and 10a in the vicinity thereof. Is available.

On the other hand, as shown in FIG.
Mounted on the circuit board 5 is a control means (not shown) for supplying a blinking command signal for blinking the LED 4 at 0.5 to 10 ° z. The printed circuit board 18 is a socket body 2
In addition to forming an insertion hole 19 through which the insertion cylindrical portion 6 can be inserted, the peripheral edge of the opening of the insertion hole 19 has one surface,
A pair of arc-shaped electrode portions 20a and 20b are formed so as to oppose each other in the diameter direction, and these electrode portions 20a and 20b are formed.
Between b, insertion holes 21a and 21b through which the pair of locking portions 16 and 17 of the socket body 2 are inserted are integrally formed with each other.

Therefore, the light source device 1 is
When the warning light as a display device is configured by being inserted and fixed into the insertion hole 19 of the light source device 8, first, a pair of locking portions 1 of the light source device 1 are used.
The polarities of the locking portions 16 and 17 and the pair of external terminals 9a and 10a near the locking portions 16 and 17 are visually checked by checking the shapes of the pair of electrode portions 20a and 20b of the printed circuit board 18.
Confirm that the polarity matches.

Next, when the insertion cylindrical portion 6 of the light source device 1 is inserted into the insertion hole 19 of the printed circuit board 18, the insertion is guided in the axial direction by the insertion guides 17b and 17c of the socket main body 2, and the socket main body 2 is inserted. When the socket body 2 is rotated about the axis when the outer flange 7 is inserted, the respective openings 1 of the locking portions 16 and 17 of the socket body 2 are rotated.
6a and 17a are a pair of electrode portions 20 of the printed circuit board 18.
a, 20b, and are clamped in the front and back directions and fixed.
Thereby, the pair of external terminals 9a and 10a of the light source device 1 are formed.
Are in close contact with and electrically connected to the pair of electrode portions 20a and 20b of the printed circuit board 18, respectively.

Further, in the state where the light source device 1 is attached to the insertion hole 19 of the printed circuit board 18 as described above,
As described above, since the polarities of the pair of external terminals 9a, 10a and the pair of electrode portions 20a, 20b match each other, one of the pair of electrode portions 20a, 20b, for example, 2
If 0a is the anode side, a current on the anode side is first energized to one of the external terminals 9a in contact with the electrode section 20a on the anode side. One lead frame 13, LED4,
The current flows through the other lead frame 14 and the other external terminal 10a, respectively, to the electrode portion 20b on the other cathode side of the printed circuit board 18, and the LED 4 is turned on.

When a blinking command signal is given to the circuit board 5 from control means (not shown) mounted on the printed circuit board 18, the circuit board 5 switches the LED 4 from 0.5 to 0.5, for example.
At 10 Hz, ON: OFF time is 51:49 and the required time is blinked to alert the user as some kind of alarm.

Therefore, the LED 4 is blinked at 0.5 to 10 ° z during continuous lighting or as needed.
It can alert the user and make it visible as an alarm. Moreover, since the blinking interval is relatively slow, the visibility of the alarm can be improved.

[0033]

As described above, the first aspect of the present invention is:
A light source having a polarity, such as an LED (light emitting diode), is set to 0.
Since the display blinks at 5 to 10 ° z, the user can be alerted and visually recognized as some kind of warning. Moreover, since the blinking interval is relatively slow, the visibility of the alarm can be improved.

Therefore, this light source can be used as a light source device for a warning light. If the light source is an LED, the lamp life is long and maintenance free of the warning light can be achieved.

According to the second aspect of the present invention, since the light source device according to the first aspect is provided, substantially the same operation and effect as the light source device can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a light source device according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 when LEDs are omitted.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a view as viewed from the direction of arrows ΔV in FIG. 2;

FIG. 5 is a bottom view of FIG. 2;

FIG. 6 is a rear view of the contact terminal shown in FIG. 3 and the like.

FIG. 7 is a plan view around the insertion hole of the printed circuit board.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light source device 2 Socket main body 3 Insertion hole 4 Light emitting diode (light source) 5 Circuit board

Claims (2)

[Claims] 1. A light source having a polarity; a circuit board electrically connected to the light source, the circuit board including means for blinking the light source at 0.5 to 10 Hz; a socket body accommodating the circuit board; An internal terminal portion that is housed in and is electrically connected to the contacts of the circuit board and electrically connected to the internal terminal portion and fixed in a state of protruding outside the socket body. And a contact terminal having a terminal portion. 2. The light source device according to claim 1, an insertion hole through which a socket body of the light source device is inserted, an engagement hole connected to the insertion hole and removably engaged with the locking portion, and the insertion hole. A printed circuit board including an electrode formed on the entire periphery of the hole and electrically connected to an external terminal of the light source device; a display unit illuminated by the light source device; a light source device, a printed circuit board, and a display unit And a housing for housing the display device.