CN203641990U - Night-vision compatible backlight module - Google Patents

Abstract

The utility model discloses a night-vision compatible backlight module. The night-vision compatible backlight module comprises a wedge-shaped light guiding plate, a bottom frame, an LED (light emitting diode) single-side lamp strip, LED white lamps and LED colorful lamps, wherein the wedge-shaped light guiding plate is clamped in the bottom frame; the LED single-side lamp strip is adhered to a side wall of the bottom frame, and is positioned on a light inlet side of the wedge-shaped light guiding plate; and the LED white lamps and the LED colorful lamps are alternately arranged on the LED single-side lamp strip. The special LED colorful lamps and the special LED white lamps are arrayed alternately, so that a night-vision compatibility effect is achieved; the night-vision compatible backlight module has two work modes by a set of backlight; in a day mode, the colorful lamps and the efficient white lamps work; in a night mode, only the colorful lamps work; the requirement on night-vision compatibility can be met by adjusting color matching; compared with the existing backlight work mode, the work modes of the night-vision compatible backlight module have the advantages that the reasonable use ratio of the LED lamps is greatly increased; and the night-vision compatible backlight module is simple in structure, the backlight lighting effect is greatly improved, the reliability is enhanced, and the cost is reduced.

Description

Night viewing compatible backlight module

Technical field

The utility model relates to a kind of airborne indicator, in particular a kind of night viewing compatible backlight module.

Background technology

Along with the develop rapidly of liquid crystal technology, as the display system on aircraft, replace CRT by LCD gradually and show, aspect backlight also replaces CCFL light source by LED gradually.Form with LED light source and LCD and show the display mode that is combined as main flow, rely on its low-power consumption and high reliability advantage, be widely applied in military domain.

In the time that night flight is on duty, pilot need to wear night vision goggles and drive.For avoiding by monitoring display infra-red radiation lock onto target, and for avoiding liquid crystal display infra-red radiation pilot to be produced be similar to halation or the light of flash lamp effect blind through night vision goggles, when night flight, require the infrared spoke brightness of display to meet corresponding requirements, make the display can night viewing compatible.

The mode that tradition realizes night viewing compatible has two kinds: a kind ofly on LED lamp, cover a special night vision sheet, or in blooming group, cover the colour filter that one deck is special.The maximum weak point of this kind of mode is that cost of manufacture is too high; Another kind is to adopt bimodulus backlight technology, and by the side night viewing compatible of realizing backlight, backlight realization normally worked daytime at the end.The maximum weak point of this kind of mode is that utilization ratio backlight is too low, cost of idleness, and structure is also more complicated simultaneously.

Along with the development of technology, more and more higher to the requirement of airborne indicator, require lower backlight power consumption, lower cost, the reliability of simpler structure and Geng Gao.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of night viewing compatible backlight module is provided, and to improve light efficiency backlight and reliability, reduces costs.

The utility model is achieved through the following technical solutions: the utility model comprises Wedge shape light conduction board, bottom framework, LED single sided lamp bar, the white lamp of LED and LED color lamp; Described Wedge shape light conduction board is arranged in bottom framework, and LED single sided lamp bar pastes on the sidewall of bottom framework, and what LED single sided lamp bar was positioned at Wedge shape light conduction board enters light side, and the white lamp of LED and LED color lamp are arranged alternately on LED single sided lamp bar.

The cross section of described Wedge shape light conduction board is trapezoidal, and trapezoidal long base is for entering light side, the lower surface of described Wedge shape light conduction board and non-enter light side paste reflectance coating be set.

Described bottom framework is provided with multiple grooves, and Wedge shape light conduction board is provided with the fixed-wing matching with described groove, and fixed-wing is fastened in described groove, and fixed-wing is fastened in described groove.

The utility model has the following advantages compared to existing technology: the utility model, for meeting night viewing compatible, uses special LED color lamp and the white lamp of LED alternately; A set of two kinds of mode of operations backlight, daytime, pattern color lamp was all worked with efficient white lamp, and the only color lamp work of pattern at night, meets night viewing compatible requirement by adjusting color proportioning; Compared with traditional backlight working method, greatly improve the reasonable utilization rate of LED lamp; Simple in structure, greatly improve light efficiency backlight, strengthen reliability, reduce cost.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the cutaway view of Fig. 1.

The specific embodiment

Below embodiment of the present utility model is elaborated; the present embodiment is implemented under take technical solutions of the utility model as prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.

As depicted in figs. 1 and 2, the present embodiment is drawn together Wedge shape light conduction board 1,bottom framework 2, LED singlesided lamp bar 3, thewhite lamp 5 of LED and LED color lamp 4; Described Wedge shape light conduction board 1 is arranged inbottom framework 2, and LED singlesided lamp bar 3 pastes on the sidewall ofbottom framework 2, and what LED singlesided lamp bar 3 was positioned at Wedge shape light conduction board 1 enters light side, and thewhite lamp 5 of LED and LED color lamp 4 are arranged alternately on LED singlesided lamp bar 3.

The cross section of described Wedge shape light conduction board 1 is trapezoidal, and trapezoidal long base is for entering light side, the lower surface of described Wedge shape light conduction board 1 and non-enter light side paste reflectance coating be set.

Describedbottom framework 2 is provided with two grooves, and Wedge shape light conduction board 1 is provided with the fixed-wing 6 matching with described groove, and fixed-wing 6 is fastened in described groove, and fixed-wing 6 is fastened in described groove.

The manufacturing process of the present embodiment is as follows:

Wedge shape light conduction board 1 non-enter light side and bottom surface paste reflectance coating.Onbottom framework 2, offer groove, alternately weld thewhite lamp 5 of LED and the LED color lamp 4 with night viewing compatible on LED singlesided lamp bar 3, thewhite lamp 5 of LED and LED color lamp 4 are realized work pattern in daytime jointly, and LED color lamp 4 is realized separately work pattern at night, meets night viewing compatible requirement.LED singlesided lamp bar 3 is first fixed in the internal side wall ofbottom framework 2 by bond plies, then the Wedge shape light conduction board 1 that pastes reflectance coating is packed inbottom framework 2, on Wedge shape light conduction board 1, have corresponding groove fit in two fixed-wings 6 andbottom framework 2 to fix, finally Wedge shape light conduction board 1 non-enter the reinforcing of light side point glue.

Claims (3)

1. a night viewing compatible backlight module, is characterized in that, comprises Wedge shape light conduction board (1), bottom framework (2), LED single sided lamp bar (3), the white lamp of LED (5) and LED color lamp (4); Described Wedge shape light conduction board (1) is arranged in bottom framework (2), LED single sided lamp bar (3) pastes on the sidewall of bottom framework (2), what LED single sided lamp bar (3) was positioned at Wedge shape light conduction board (1) enters light side, and the white lamp of LED (5) and LED color lamp (4) are arranged alternately on LED single sided lamp bar (3).

2. night viewing compatible backlight module according to claim 1, is characterized in that, the cross section of described Wedge shape light conduction board (1) is trapezoidal, and trapezoidal long base is for entering light side, the lower surface of described Wedge shape light conduction board (1) and non-enter light side paste reflectance coating be set.

3. night viewing compatible backlight module according to claim 1, is characterized in that, described bottom framework (2) is provided with multiple grooves, and Wedge shape light conduction board (1) is provided with the fixed-wing (6) matching with described groove, and fixed-wing (6) is fastened in described groove.

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