Large-size low-voltage full-color nixie tube

Abstract

The invention discloses a large-size low-voltage full-color nixie tube. The large-size low-voltage full-color nixie tube comprises a nixie tube body, a PCB substrate and a plastic shell. The nixie tube body is a nixie tube body shaped like the Arabic number '8' composed of 7 stroke segments. Each stroke segment is composed of a PMMA glass body, an R / G / B three-color lamp bead and the matched part of the PCB substrate. U-shaped grooves are formed in the inner sides of the PMMA glass bodies and internally provided with the R / G / B three-color lamp beads. Sinking planes are arranged on the two sides of each U-shaped groove. The sinking planes are used for installing the PCB substrate. The R / G / B three-color lamp beads are electrically connected with the PCB substrate. Protruding light reflection points are arranged on the bottom faces of the PMMA glass bodies. White light reflection films are attached to the bottom faces of the PMMA glass bodies. Light shielding films are attached to the positions, close to the R / G / B three-color lamp beads, of the front faces of the PMMA glass bodies, and light reflection light silver polyethylene terephthalate layers are arranged on the peripheries of the side faces of the PMMA glass bodies. The nixie tube body is connected with an external circuit PCB arranged on the back side of the plastic shell. The large-size low-voltage full-color nixie tube is good in LED lamp bead coloration effect, simple in wiring, convenient to maintain and replace, capable of reducing the maintenance cost, low in requirement for power supply voltage, suitable for being powered by batteries, safe, convenient to use and wide in market prospect.

Description

Technical field [0001] The invention relates to the field of LED lamp tubes, in particular to a large-size low-voltage full-color digital tube. Background technique [0002] The seven-segment digital tube refers to a display device that uses seven pen segments a-, b, c, d, e, f, g (h is a decimal point) to display a number, and has beautiful display, high brightness, and wide temperature range. Advantages, widely used in various occasions that require digital display; small-sized digital tube applications such as electronic scales, electronic clocks, various digital meter heads, instruments, etc., large-sized digital tube applications such as clock display in shopping malls, production lines Electronic billboards, scores of quiz answerers, clock display, football, basketball game timing, scoring devices, etc.; single-digit digital tubes have a variety of specifications from 0.36 inches to 12 inches; the composition of conventional digital tubes is mainly composed of : Plastic sh...

AI Technical Summary

Problems solved by technology

Large-size digital tubes above 2.3 inches require a higher driving voltage to light up the digital tubes because they are connected in series with multiple LED lamp beads. When using battery-powered applications, the power supply problem is more difficult to solve; due to the use of series-connected The circuit connection method, and the method of epoxy resin potting, when one of the LED lamp beads of a certain pen section of the traditional digital tube fails, it will cause the entire pen section to be off, causing the entire digital tube to be scrapped, which is fundamental There is no way to repair it; and because of the large number of lamp beads used, the parallel connection current is too large, and there is no large-size digital tube product that uses parallel connection on the market; the large-size digital tube products of traditional technology generally use the method of connecting multiple lamp beads in series , there are disadvantages such as high driving voltage, large current, high cost, and high failure rate

Since a lot of LED lamp beads are connected in series, if a full-color effect is to be achieved, a pen section requires dozens of LED lamp beads in series and parallel design, and the entire digital tube needs hundreds of LED lamp beads in series and parallel connection, the circuit is complicated, and the power consumption Large, the production yield is very low, so there is no supply of large-size full-color seven-segment digital tube products in the market, and it is urgent to develop a large-size low-voltage full-color digital tube that is easy to install and maintain, simple in structure, and low-voltage power supply. , to fill the gap in the market

Images