CN204203418U - LED tests tweezer - Google Patents

LED tests tweezer Download PDF

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Publication number
CN204203418U
CN204203418U CN201420752393.7U CN201420752393U CN204203418U CN 204203418 U CN204203418 U CN 204203418U CN 201420752393 U CN201420752393 U CN 201420752393U CN 204203418 U CN204203418 U CN 204203418U
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CN
China
Prior art keywords
tweezer
test
led
contact piece
metal contact
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420752393.7U
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Chinese (zh)
Inventor
王定宇
Original Assignee
王定宇
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Publication date
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Priority to CN201420752393.7U priority Critical patent/CN204203418U/en
Application granted granted Critical
Publication of CN204203418U publication Critical patent/CN204203418U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of LED and tests tweezer, and the test circuit comprising USB joint, test tweezer body and be electrically connected with USB joint, switches on power by USB joint, and for test circuit is powered, power taking is convenient, safety; Test circuit is arranged in test tweezer body, in the lower end, both sides of test tweezer body, metal contact piece is installed, test circuit is made up of current-limiting resistance, the power output end positive pole of USB joint is connected in series with current-limiting resistance afterwards and wherein a metal contact piece is electrically connected, and power output end negative pole and another metal contact piece of USB joint are electrically connected.When detecting LED, test tweezer is clipped on the positive and negative electrode haptic element of LED, is contacted with the positive and negative electrode haptic element of LED is corresponding by the positive and negative electrode metal contact piece on test tweezer, make tested LED connecting test circuit, thus reach the object detecting LED performance quality.It is more simple, quick that this detects operation, can improve the detection speed of testing staff, thus raise the efficiency, be particularly suitable for the test for paster LED.

Description

LED tests tweezer
Technical field
The utility model relates to LED field tests, and particularly a kind of LED tests tweezer.
Background technology
LED(Light Emitting Diode, light emitting diode) be a kind of solid-state semiconductor devices, it directly can be converted into light electricity, and LED has life-span long, pollution-free, light efficiency high, just progressively substitute incandescent lamp and fluorescent light, be widely used.When welding LED, all need good to the performance of LED, bad detection.Existing detection method is with multimeter R × 10k shelves, measures the forward and reverse resistance value of LED.Time normal, forward resistance value (when black meter pen connects positive pole) is about 10 ~ 20k Ω, and back resistance value is 250k Ω ~ ∞ (infinity).The light emitting diode of higher sensitivity, when measuring forward resistance value, can glimmer in pipe.The operation of this detection method is easy not, and is paster encapsulation because present most of LED has made, instead of the encapsulation of traditional band pin plug-in unit LED, and the volume of LED is little, further increases operation easier, thus reduces detection efficiency.
Therefore, how to realize a kind of easy and simple to handle, efficiency is high, and testing tweezer for paster LED is especially technical matters urgently to be resolved hurrily in the industry.These test tweezers are specially adapted to the test of paster LED.
Utility model content
Fundamental purpose of the present utility model is to provide the LED that a kind of USB of employing powers and tests tweezer, is intended to test the performance quality of tweezer to LED by LED and detects, and the detection operation of LED is simplified more, fast, thus improves the detection efficiency of LED.
The utility model proposes a kind of LED and test tweezer, the test circuit comprising the USB joint for connecing external power source, test tweezer body and be electrically connected with described USB joint, described test circuit is arranged in described test tweezer body, in the lower end, both sides of described test tweezer body, metal contact piece is installed, described test circuit is made up of current-limiting resistance, the power output end positive pole of described USB joint is connected in series with described current-limiting resistance afterwards and wherein metal contact piece described in is electrically connected, and the power output end negative pole of described USB joint and metal contact piece described in another are electrically connected.
Preferably, described current-limiting resistance is resistance 140 ~ 160 ohm, and power is the resistance of 1/8 watt.
Preferably, described current-limiting resistance is resistance 7 ~ 8.2 ohm, and power is the resistance of 1 watt.
Preferably, the side being provided with the metal contact piece be connected with described power output end positive pole of described test tweezer body is provided with positive pole mark, the side being provided with the metal contact piece be connected with described power output end negative pole of described test tweezer body is provided with negative pole and marks.
Preferably, described test tweezer body comprises left-side member and right-hand member, and described left-side member is connected relatively with the upper end of described right-hand member, and lower end is provided separately, and forms tweezer body; Described metal contact piece is arranged on the lower end of described left-side member and described right-hand member.
Preferably, be connected by buckle structure between described left-side member with described right-hand member.
Preferably, described test tweezer body also comprises attachment cap, and described attachment cap is buckled in the upper end of described tweezer body.
Preferably, described attachment cap is held in the upper end of described tweezer body by buckle structure.
Preferably, two side external surfaces of described test tweezer body are provided with some anti-skidding stripeds.
The beneficial effect that LED of the present utility model tests tweezer is:
1, LED test tweezer of the present utility model comprises test tweezer body and is arranged on the intrinsic test circuit of test tweezer, and test circuit is made up of current-limiting resistance, and circuit is simple; In the lower end, both sides of test tweezer body, the metal contact piece be connected with test circuit is installed, when detecting LED, only need test tweezer be clipped on the positive and negative electrode haptic element of LED, contacted with the positive and negative electrode haptic element of LED is corresponding by the positive and negative electrode metal contact piece on test tweezer, make tested LED connecting test circuit, as tested LED is luminous, then illustrate that LED is good, by detecting; As tested LED is not luminous, then illustrate that LED is bad, detects and does not pass through, thus reach the object detecting LED performance quality.
Test tweezer by LED and detect LED, operation is more simple, quick, can improve the detection speed of testing staff, thus raise the efficiency.
2, LED test tweezer of the present utility model adopts USB to power, and power taking is convenient, also safer.
Accompanying drawing explanation
Fig. 1 is the structural representation that LED of the present utility model tests the LED test tweezer of the embodiment of tweezer;
Fig. 2 is the circuit diagram that LED of the present utility model tests the test circuit of the embodiment of tweezer.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See figures.1.and.2, propose the embodiment that LED of the present utility model tests tweezer:
A kind of LED tests tweezer, the test circuit comprising the USB joint 10 for connecing external power source, test tweezer body 20 and be electrically connected with USB joint 10, be connected with USB interface by USB joint 10, or be connected with power supply adaptor by USB joint 10, attaching plug is connected by power supply adaptor, switch on power, for test circuit provides 5V power supply, power taking convenience, safety.
This test circuit is made up of current-limiting resistance R, and circuit is simple.Test circuit is arranged in test tweezer body 20, in the lower end, both sides of test tweezer body 20, metal contact piece 24 is installed, the power output end positive pole of USB joint 10 is connected in series with current-limiting resistance R afterwards and wherein a metal contact piece 24 is electrically connected, and power output end negative pole and another metal contact piece 24 of USB joint 10 are electrically connected.
When detecting LED, only need test tweezer be clipped on the positive and negative electrode haptic element of LED, be contacted with the positive and negative electrode haptic element of LED is corresponding by the positive and negative electrode metal contact piece 24 on test tweezer, make tested LED connecting test circuit, as tested LED is luminous, then illustrate that LED is normal; As tested LED is not luminous, then illustrate that LED is bad, detects and does not pass through, thus reach the object detecting LED performance quality.Test tweezer by LED and detect LED, operation is more simple, quick, can improve the detection speed of testing staff, thus raise the efficiency.
The side being provided with the metal contact piece 24 be connected with power output end positive pole of test tweezer body 20 is provided with positive pole and marks "+", the side being provided with the metal contact piece 24 be connected with power output end negative pole of test tweezer body 20 is provided with negative pole and marks "-", be convenient to the positive and negative electrode that user recognizes test tweezer, thus conveniently detect paster LED.
The specification of this current-limiting resistance R is as follows:
For the common LED (i.e. 1W LED) that working current is about 350mA, the resistance of this current-limiting resistance R is 7 ~ 8.2 ohm, and power is 1 watt.
Be the common LED of about 25mA for working current, the resistance of this current-limiting resistance R is 140 ~ 160 ohm, and power is 1/8 watt.
After tested, adopt resistance 140 ~ 160 ohm, during the current-limiting resistance that power is 1/8 watt, this LED tests tweezer can light all LED (comprising the LED that above-mentioned working current is 350mA 1W).
This test tweezer body 20 comprises left-side member 21 and right-hand member 22, and left-side member 21 is connected relatively with the upper end of right-hand member 22, and lower end is provided separately, and forms tweezer body.This metal contact piece 24 is arranged on the lower end of left-side member 21 and right-hand member 22.Be connected by buckle structure between left-side member 21 with right-hand member 22, attended operation is easy, is convenient to demolition, installation.
Two side external surfaces of test tweezer body 20 are provided with some anti-skidding stripeds 25, for increasing friction force, are beneficial to the use of test tweezer.
This test tweezer body 20 also comprises attachment cap 23, and this attachment cap 23 is held in the upper end of tweezer body by buckle structure, and more firm for making left-side member 21 be connected with right-hand member 22, profile is also more attractive in appearance.
Independent labeling is indicated, for illustration of the specification of the LED be suitable on attachment cap 23 surface.
Test tweezer by this LED and detect LED, operation is more simple, quick, can improve the detection speed of testing staff, thus raise the efficiency.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure transformation utilizing the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (9)

1. a LED tests tweezer, it is characterized in that, the test circuit comprising the USB joint for connecing external power source, test tweezer body and be electrically connected with described USB joint, described test circuit is arranged in described test tweezer body, in the lower end, both sides of described test tweezer body, metal contact piece is installed, described test circuit is made up of current-limiting resistance, the power output end positive pole of described USB joint is connected in series with described current-limiting resistance afterwards and wherein metal contact piece described in is electrically connected, and the power output end negative pole of described USB joint and metal contact piece described in another are electrically connected.
2. LED according to claim 1 tests tweezer, and it is characterized in that, described current-limiting resistance is resistance 140 ~ 160 ohm, and power is the resistance of 1/8 watt.
3. LED according to claim 1 tests tweezer, and it is characterized in that, described current-limiting resistance is resistance 7 ~ 8.2 ohm, and power is the resistance of 1 watt.
4. LED according to claim 1 tests tweezer, it is characterized in that, the side being provided with the metal contact piece be connected with described power output end positive pole of described test tweezer body is provided with positive pole mark, the side being provided with the metal contact piece be connected with described power output end negative pole of described test tweezer body is provided with negative pole and marks.
5. the LED according to claim 1 or 4 tests tweezer, and it is characterized in that, described test tweezer body comprises left-side member and right-hand member, and described left-side member is connected relatively with the upper end of described right-hand member, and lower end is provided separately, and forms tweezer body; Described metal contact piece is arranged on the lower end of described left-side member and described right-hand member.
6. LED according to claim 5 tests tweezer, it is characterized in that, is connected between described left-side member with described right-hand member by buckle structure.
7. LED according to claim 5 tests tweezer, and it is characterized in that, described test tweezer body also comprises attachment cap, and described attachment cap is buckled in the upper end of described tweezer body.
8. LED according to claim 7 tests tweezer, and it is characterized in that, described attachment cap is held in the upper end of described tweezer body by buckle structure.
9. LED according to claim 5 tests tweezer, it is characterized in that, two side external surfaces of described test tweezer body are provided with some anti-skidding stripeds.
CN201420752393.7U 2014-12-03 2014-12-03 LED tests tweezer Expired - Fee Related CN204203418U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420752393.7U CN204203418U (en) 2014-12-03 2014-12-03 LED tests tweezer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420752393.7U CN204203418U (en) 2014-12-03 2014-12-03 LED tests tweezer

Publications (1)

Publication Number Publication Date
CN204203418U true CN204203418U (en) 2015-03-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420752393.7U Expired - Fee Related CN204203418U (en) 2014-12-03 2014-12-03 LED tests tweezer

Country Status (1)

Country Link
CN (1) CN204203418U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105232114A (en) * 2015-11-17 2016-01-13 赵赛 Minimally invasive beautifying pliers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105232114A (en) * 2015-11-17 2016-01-13 赵赛 Minimally invasive beautifying pliers

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150311

Termination date: 20151203

EXPY Termination of patent right or utility model