Today, I would like to introduce you to a common thing in daily life - LED lights, and most importantly, teach you the process of making led?light box. When it comes to this LED light box, we have to talk about this LED light, because this is the main thing. Now in the street you can see led electronic light box this kind of thing, some flashing signs, big advertising light boards, these are.

Introduction of LED lights

LED, this is a kind of light-emitting diode, a semiconductor, it can emit various colors of light, red yellow these are the most common. Now LED is more and more popular, first of all, it is mainly energy-saving, which is more important for both businesses and families. Secondly, its life expectancy is also relatively long, generally can work up to 100,000 hours or more, which is very affordable for the family. Secondly it is more in line with the mainstream of modern society - environmental protection, it does not contain harmful substances, but also can be recycled, very economical and environmentally friendly. These advantages are the reason why it is becoming more and more common.

Preparation of materials

Below I will teach you the production process of making LED electronic light box, first of all, the preparation work. You need to buy acrylic board or some other insulating material, the word to be made first with a single-sided tape to the carving, paste in the pre-prepared insulating board, and then use the drill to hit the hole, the spacing of this hole according to the size of your word.

Production process

First you have to connect the LED in accordance with the order of positive and negative poles, do not connect the wrong one, pay attention to the diode long pin is positive. Then in the various colors of light-emitting diodes in series, the series of LEDs must not be too much, otherwise the lamp will not be bright or very low brightness. This time you need to access the resistor, keep in mind that the resistor does not have a positive or negative pole, you can connect at will. It needs to be connected between the two light-emitting diodes. Any light box needs a controller, so next you need to connect the controller, or positive pole to positive pole, negative pole to negative pole. Then in the light of the positive pole and the main word of the positive pole welded together. These are done after the need for debugging, connected to the power to see if it is bright, and then use a voltmeter to measure the elegance is not more than 20V, more than the addition of a resistor, until normal.

LED electronic light box simple production method

1, production: the use of acrylic panels, plastic panels, or other insulating materials, I use the black 2.5mm double-layer aluminum composite panel mostly. The word to be done first with a single-sided adhesive paper engraved, pasted on the cut size of the aluminum composite panel, with a drill or engraving machine to hit the hole (spacing according to the size of the word, the general distance of 10-15mm a), the size of the hole diameter of 5mm can not be too large. With F5 spotlight to do the word is the best distance between the holes is greater than 15mm, the reason we try to know. If you use 546 oval light, hole distance can be controlled between 20-10mm, the closer the better.

2, series connection: the LED by +-, +-, ...... +-, +- series welding, resulting in a positive pole (make a mark A +) and a negative pole (make a mark K -). The connections of the lamp legs need to be soldered with tin, or you can screw them together and solder them. Remember: Always solder. Because the legs of the LED is iron silver-plated, once the current through the moisture will soon rust, will cause hidden danger to the light box, but also to the after-sales service will bring a lot of trouble. Now a lot of connected lights

, with connected lights can save a lot of time to improve productivity, but only 20 lights per row, welding can not be avoided.

Note: The long pin of the light-emitting diode is "+" (positive) pole, the short pin is "-" (negative) pole.

3, grouping (string): in accordance with the schedule is not greater than the maximum number of various colors of light-emitting diodes can be connected in series, such as each string of red LED should not be more than 120. The reason is very simple, the output of the controller is about 210V DC, the red light operating voltage is about 2V, that is to say, each after a LED light will be bucked 2V, if the number of LEDs is too much, then the output voltage of the controller does not reach the string of lights when the normal work of the required voltage, the string of lights will not be bright, or brightness is too low.

Note: Schedule with "*" is not recommended, when the number of series LEDs close to or over the number of with "*", easy to cause circuit instability, it is desirable to be divided into two strings or more strings connected in parallel for a group.

4, the series into the resistor: the number of schedules will be the appropriate number of resistors into each string of light-emitting diodes, resistors without positive and negative points, and can be strung in the string of light-emitting diodes in any two light-emitting diodes between. String in the need for wire connection to save time and effort to save wire.

Note: Due to the different batches and models of products, the specific number and value of the series resistance depends on the operating current, the above parameters are for reference only.

The current of each branch of the light-emitting diode should be adjusted to 19ma±1ma, and the resistor should be 1k/2w, e.g., 5k, which can be connected with 5 resistors with a resistance value of 1k ohm and a power of 2W.

5, connect the controller: the positive pole of each string of LEDs into the positive (red line) end of the controller, the negative pole of each group of light-emitting diodes into the controller's negative (green line) control terminal. The three yellow wires are the output lines of the running side lights, which are connected to the negative poles of the three groups of side lights. The three positive poles of the side lights and the positive pole of the main character are welded together. General controller has a straight light output line, in the absence of constant light requirements, light box constant light output line should be cut or glued with a glue stick to prevent damage to the controller with the positive pole break.

6, debugging: connection is correct, the power will light up, a simple way to measure the current, using a multimeter DC voltage gear, measuring one of the 1K/2W resistor on the voltage of about 15-20V (preferably less than 18V), beyond 20V and then add a resistor to measure again, until normal.

For the convenience of debugging measurements, the controller pattern can be set in the debugging state and a long delay interval state, the controller output for a large proportion of the long bright, short extinction state. Now the controller has a straight bright output, the current is constant in favor of accurate measurement of the voltage of the resistor.

7, maintenance: if not bright, with a multimeter DC 250V file, the black pen connected to the green line, the red pen connected to the red line, if the indication of jumping or in the 200-220V, indicating that the controller is normal; the black pen does not move, the red pen in turn to measure the voltage at each end of each led, if the voltage difference between the two feet of a LED is very large or no voltage, indicating that the LED is damaged, replace it and then try again.

8, the assembly of the light box: materials: 2 *.mm wood keel and 2.* mm aluminum angle (90 °), these materials are generally decorative materials market. Specific production methods do not need to go into detail,

Introduced so much, we are not already for this production process has been understood. Look at the street full of LED, we are not very envious, it does not matter, as long as you can understand this production method, you will be able to produce their own LED electronic light box.

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