RU2626215C1 - Light-signal panel - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: light-signal panel contains a body in the form of an U-shaped element, inside which a pair of L-shaped elements is rigidly fixed to one of the edges with a pair of threaded holes in each of them, to which a cover and a cap with a viewing window are fixed which screws, at the opposite edge of the U-shaped element of the body, an electric insulating plate is installed with current-conducting elements inserted into the holes, an electrical insulation plate with a pair of parallel rows of leds arranged, over which a combined diffuser with a porous translucent element and a light-diffusing frosted lavsan film, an information stencil and a neutral density filter with anti-reflection coating are installed, and the LEDs installed in a couple of parallel rows are made in two options, the first of which contains four LEDs in each row, and the second option contains five LEDs in each row. In the first option, the LEDs are connected to the pair of groups so that, when direct electric shift is applied thereon, the first LED from the first row, the second and the third LEDs from the second row, the fourth LED from the first row are switched on in one group, and the first LED from the second row, the second and the third LEDs from the first row and the fourth LED from the second row are switched on in the second group, the terminals of which, through the current-setting resistors included in each group and the common terminal, are connected respectively to the conductive elements, and in the second option, the LEDs are connected to the pair of groups so that, when direct electric shift is applied thereon, the first extreme LED from the first row, the second LED from the second row, the third LED from the first row, the fourth LED of the second row and the fifth LED from the first row are switched on in one group, and the first extreme LED from the second row, the second LED from the first row, the third LED from the second row, the fourth LED from the first row and the fifth LED from the second row are switched on in the second group, the terminals of which, through the current-setting resistors included in each group and the common terminal, are connected respectively to the conductive elements.

EFFECT: increasing the reliability of the light-signal panel due to the redundancy of LEDs, improving the uniformity of illumination of the information screen, the comfort of presenting information about the status of the parameters of the on-board systems due to the implementation of a combined light-diffuser.

2 cl, 6 dwg

Description

The invention relates to information display devices, including those means where increased reliability is required, for example, to indicate the parameters of systems in long-term operation of aircraft.

Known light-signal aircraft display to indicate and indicate exit from the cabin. The known display panel contains a translucent screen in the form of two rectangular plates of optically transparent material touching each other, between which there are backlight elements made of LEDs and a light guide. The screens are marked with inscriptions and arrows. The panel has a low brightness and cannot be used on the instrument panels of aircraft to indicate system parameters, i.e. has limited use [1].

It is also known optoelectronic light-signal display, indicating the parameters of the alarm in flight conditions, installed on the dashboard of the pilot (prototype).

The panel contains a housing, a U-shaped electrical insulating bracket, a pair of electrical insulating boards, one of which has LEDs, a diffuser, an information stencil, a neutral filter and a cover with a viewing window, a current-setting resistor included in the series of LEDs connected in series, a latch and input current-carrying elements.

Along with the undoubted advantages of the design of the scoreboard, it is not exempted from the drawback - a relatively complex design. In addition, the diffuser is made with a low light transmittance of the LEDs, which leads to insufficient use of their light flux, and the serial connection of the LEDs leads to a decrease in reliability, because failure of one of the LEDs leads to failure of the display.

The purpose of the proposed light-signal board is to increase reliability due to redundancy of LEDs.

Several design options for a light-signal display are proposed, combined by a single inventive concept.

The first version of the device consists in the fact that the light-signal board contains a housing with a lid and a cap with a viewing window, a pair of rows of LEDs are installed in the housing, placed parallel to each other on an electrical insulating board with leads connected to the conductive elements, a light diffuser, an informational stencil are installed sequentially above the LEDs. , neutral light filter. Distinctive design features are that the housing is made in the form of a U-shaped element, inside of which a pair of L-shaped elements with a pair of threaded holes made in each of them is rigidly fixed to its side walls at one of the edges, one of which the cap is fixed with screws through the holes made, a cap with a viewing window is fixed to other threaded holes, an insulating plate with inserted holes in the holes is installed at the opposite edge of the U-shaped housing element conductive elements, the diffuser is combined and contains a porous element of a translucent material and a matted lavsan light-diffusing film with a chemical coating of milk color, and four LEDs installed in a pair of parallel rows are connected in a pair of groups so that when applying direct electric bias to them in one the group includes the first extreme LED from the first row of the second and third LEDs from the second row, the fourth LED from the first row of the LED c, and in the other group, the first LED from the second row, the second and third LEDs from the first row and the fourth LED from the second row, the conclusions of which are connected through the current-sensing resistors to the conductive elements, respectively, in addition, anti-glare coatings are applied to the neutral filters .

The second variant of the device is that it contains a housing with a cover and a cap with a viewing window, a pair of rows of LEDs are installed in the housing, placed parallel to each other on an electrical insulating board and combined in a pair of groups with conductive elements, a light diffuser and an informational stencil are installed in series over the LEDs. , neutral light filter.

Distinctive design features are that the housing is made in the form of a U-shaped element, inside of which a pair of L-shaped elements with a pair of threaded holes made in each of them is rigidly fixed to its side walls at one of its edges, to one of of which the cap is fixed with screws through the holes made in it, a cap with a viewing window is fixed to other threaded holes, at the opposite edge of the U-shaped body element, an insulating plate is inserted with inserted holes in it with conductive elements, the diffuser is combined and contains a porous element made of a translucent material and a matted lavsan light-diffusing film with a milky-colored chemical spraying, and five LEDs installed in a pair of parallel rows in each row are connected in a pair of groups so that when applied to of them of direct electric bias in one group, the extreme first LED from the first row, the second LED from the second row, the third LED from the first poison, the fourth LED from the second row and the fifth LED from the first row, and in the second group the first extreme LED from the second row, the second LED from the first row, the third LED from the second row, the fourth LED from the first row and the fifth LED from the second row, the conclusions of which are connected via current-carrying resistors connected respectively to the conductive elements, in addition, an antiglare coating is applied to the neutral light filter.

The applicant is not aware of any technical solutions containing a combination of features identical to those of the proposed invention, which determines, according to the applicant, whether the invention meets the criterion of "novelty."

The implementation of the differences of the present invention (in combination with the characteristics given in the characterizing part of the formula) ensures the achievement of new properties (technical effect) of the claimed device design variants:

- increases the reliability of the device due to redundancy of LEDs;

- improves the uniformity of illumination of the presentation of information about the state of the parameters of the on-board systems due to the implementation of the diffuser combined;

- simplifies the design of the proposed device.

The obtained lighting parameters are confirmed by the studies carried out (Act of Lighting Engineering Research No. 42-16 of 2016).

The applicant has not identified any sources of information that would contain information about the influence of the distinguishing features of the invention on the achieved technical result, which determines, according to the applicant, the proposed technical solution meets the criterion of "inventive step".

The signal board is illustrated by drawings.

In FIG. 1 shows the design of a General view of the light-signal display of the first embodiment.

In FIG. 2 shows the placement of LEDs on an electrical insulating board.

In FIG. 3 is a schematic electrical diagram of a signal board.

Common elements in all the drawings are denoted identically.

The light-signal board (Fig. 1) contains a U-shaped element of the housing 1 with a cover 2 and a cap 3 with a viewing window. To one of the edges of the U-shaped element of the housing 1, to its inner side walls, a pair of L-shaped elements 4 ₁ , 4 _{1 is} rigidly fixed (for example, rivets) with a pair of threaded holes 5 ₁ , 5 ₂ and 6 made in each of them ₁ , 6 ₂ , to one of which 5 ₁ , 5 ₂ a cover _{2 is} fixed, and a cap with an inspection window 3 is fixed to other threaded holes 6 ₁ , 6 ₂ .

An electrical insulating plate 7 with threaded holes 8 ₁ , 8 ₂ for attaching the cover 2 and holes in which conductive elements 9 ₁ , 9 ₂ with mounting screws 10 ₁ , 10 ₂ for connecting power are installed at the opposite edge of the U-shaped element of the housing 1 .

Inside the U-shaped element of the housing 1 to the L-shaped elements 4 ₁ , 4 ₂ there is an electrical insulation board 11 with a pair of rows of four LEDs mounted on it 12 ₁ 12 ₂ , 12 ₃ , 12 ₄ and 13 ₁ , 13 ₂ , 13 ₃ , 13 ₄ (Fig. 2), over which the diffuser 14, the information stencil 15, and the neutral light filter 16 are sequentially mounted.

Distinctive features of the first variant of the proposed design of the light-signal board are that the diffuser is combined in it and contains a porous element 14 ₁ of a translucent material (for example, thermoflex) and a frosted dacron light-diffusing film 14 ₂ with a chemical coating of milk color, and the LEDs located in a pair of parallel rows, connected in a pair of groups so that one group comprises a first LED January ₁₃ from the first row, the second and third February ₁₂ LEDs 12 ₃ of the second row, quat fifth April ₁₃ from the first row are connected in series, and the other group comprises a first LED January ₁₂ from the second row, the second on February ₁₃ and the third March ₁₃ from the first row and the fourth LED April ₁₂ from the second row are connected in series in the circuit of each of which are incorporated respectively, the current-setting resistors 18 and 19, the terminals of which are connected to the conductive elements 9 ₁ , 9 ₂ .

In addition, an anti-glare coating is applied to the neutral filter 16.

For fastening the signal board to the object in the U-shaped body element and the cover, a pair of holes 20 ₁ , 20 _{2 are made} .

A second embodiment of the signal board is shown in FIG. 4, FIG. 5 and FIG. 6, while:

In FIG. 4 shows a general design.

In FIG. 5 shows the placement of LEDs on an electrical insulating board.

In FIG. 6 is a schematic electrical diagram of a signal board.

Common elements in all the drawings are denoted identically.

The light-signal board (Fig. 4) contains a U-shaped element of the housing 1 with a cover 2 and a cap 3 with a viewing window. A pair of L-shaped elements 4 ₁ , 4 ₂ with a pair of threaded holes 5 ₁ , 5 ₂ and 6 ₁ made in each of them is fixed to one of the edges of the U-shaped element of the housing 1 to its inner side walls 6 ₂ , to one of which 5 ₁ , 5 ₂ the cover _{2 is} fixed, and to the other threaded holes 6 ₁ , 6 ₂ the cap 3 with the inspection window is fixed with screws.

An electrical insulating plate 7 with threaded holes 8 ₁ , 8 ₂ for fastening the cover 2 and holes in which the conductive elements 9 ₁ , 9 ₂ with mounting screws 10 ₁ , 10 ₂ for supplying power are installed at the opposite edge of the U-shaped element of the housing 1 .

Inside the U-shaped element of the housing 1 to the L-shaped elements 4 ₁ , 4 ₂ there is an electrical insulation board 21 with a pair of rows of five LEDs 22 ₁ , 22 ₂ , 22 ₃ , 22 ₄ , 22 ₅ and 23 ₁ , 23 ₂ installed on it , 23 ₃ , 23 ₄ , 23 ₅ (Fig. 5), over which the diffuser 14, the information stencil 15, and the neutral light filter 16 are mounted.

Distinctive features of the second variant of the proposed design of the light-signal board are that the diffuser is combined in it and contains a porous element 14 ₁ of a translucent material (for example, thermoflex) and a frosted dacron light-diffusing film 14 ₂ with a chemical coating of milk color, and the LEDs located in a pair of parallel rows, connected in a pair of groups so that one group comprises a first LED 23 is ₁ (FIG. 6) from the first row, the second LED ₂₂ February from the second row, the third communication March ₂₃ todiod from the first row, fourth April ₂₂ led from the second row and fifth ₂₃ May LED of the first row, and the other group of five LEDs comprises a first January ₂₂ led from the second row, the second February ₂₃ LED of the first row, the third March ₂₂ led from the second row, the fourth 23 ₄ LED from the first row and the fifth LED 22 ₅ from the second row. Each group of LEDs is respectively connected in series, in the circuit of each group are included respectively the current-setting resistors 24 and 25, the terminals of which are respectively connected to the conductive elements 9 ₁ , 9 ₂ .

In addition, an anti-glare coating is applied to the neutral filter 16.

To fix the light-signal board to the object, a pair of holes 20 ₁ , 20 _{2 are} made in the U-shaped body element and the cover.

The signal board works as follows.

According to the first embodiment

When a DC voltage is supplied from source 17 to conductive elements 9 ₁ , 9 ₂ with mounting screws 10 ₁ , 10 _{2, a} direct electric bias through the current-carrying resistors 18, 19 included in the circuit is supplied to a pair of groups of parallel-mounted LEDs, where each group includes four LEDs 12 ₁ , 13 ₂ , 13 ₃ , 12 ₄ and 13 ₁ , 12 ₂ , 12 ₃ , 13 ₄ , (Fig. 3), thereby causing the glow of all eight LEDs and, therefore, the glow of the information stencil 15. This is a regular mode of operation of the signal board.

In this case, the LEDs are connected so that in each group of four parallel-mounted LEDs when applying direct electric bias to them, a pair of extreme 13 ₁ , 13 ₄ in the same row of intermediate 12 ₁ , 12 ₄ , as well as 12 ₁ , 12 ₄ and 13 are turned on ₂ , 13 ₄ LEDs.

This inclusion of LEDs is caused by the possibility of disconnection between the LEDs under operating conditions (for example, due to vibration on an airplane or helicopter) and loss of information about the state of controlled systems.

In the absence of a glow of one of the groups of LEDs due to a possible disconnection between them, another group of turned on LEDs will illuminate the information stencil on the status of the on-board systems.

The proposed circuit for the inclusion of LEDs provides redundancy (compared with the prototype, where redundancy is absent) LEDs, which increases its reliability.

Improving the reliability of the proposed light-signal display contributes to the improvement of light scattering by a combined diffuser 14 containing a porous element 14 ₂ of a translucent material (for example, heat flex), providing multiple refraction of the light flux of LEDs, and a frosted dacron light-scattering film 14 ₂ with a chemical coating of milk color, combining light diffusion light field over the entire area of the information stencil, thereby ensuring the need for vanie OST 1.005.33-87.

In addition, an anti-glare coating is applied to the neutral light filter, which reduces the external light flux and improves the contrast of the inscription of the information stencil.

According to the second embodiment

When a DC voltage from source 17 is applied to conductive elements 9 ₁ , 9 ₂ with mounting screws 10 ₁ , 10 _2, direct electric bias through the current-carrying resistors 24, 25 included in the circuit is applied to a pair of arranged rows of LEDs connected in two groups, each of which includes five LEDs (Fig. 5, Fig. 6) 22 ₁ , 23 ₂ , 22 ₃ , 23 ₄ , 22 ₅ and 23 ₁ , 22 ₂ , 23 ₃ , 22 ₄ , 23 ₅ , thereby causing the glow of all ten LEDs and, consequently, the glow of the inscriptions of the information stencil 15. This is the standard mode of operation of the light-signal board.

In this case, the LEDs are connected so that in each group of five parallel-mounted LEDs in two rows, when applying direct electric bias to them, the first 23 ₁ LED from the first row, the second LED 22 ₂ from the second row, the third LED 23 ₃ from the first row, the fourth LED 22 ₄ from the second row and the fifth 23 ₅ LED from the first row, and in the other group the first 22 ₁ LED from the second row, the second LED 23 ₂ from the first row, the third LED 22 ₃ from the second row, the fourth LED 23 ₄ from first row and fifth LED 22 ₅ from the second row.

This inclusion of LEDs is caused by the possibility of disconnection between LEDs under operating conditions (for example, due to vibrations on an airplane or helicopter) and loss of information about the state of controlled systems.

In the absence of a glow of one of the groups of LEDs due to a possible break in the connections between them, another group of turned on LEDs will illuminate the information stencil on the status of the on-board systems, i.e. provides redundancy (compared with the prototype, where redundancy is absent) LEDs, which increases its reliability.

The reliability of the proposed light-signal display is facilitated by the implementation of the diffuser 14 combined, containing a porous element from a translucent material 14 ₁ (for example, heat flex), providing multiple refraction of the light flux of LEDs, and a frosted dacron light-scattering film 14 ₂ with a chemical coating of milk color.

The combined diffuser ensures the alignment of the light field over the entire area of the information stencil, thereby ensuring the requirement OST 1.005.33-87.

In addition, an antiglare coating is applied to the surface of the neutral light filter, which reduces the external light flux and improves the contrast of the information stencil inscriptions.

The value of the current-carrying resistor 18, 19 according to the first embodiment can be calculated by the following formula:

R ₁₈ = [(U _pit - (U13 ₁ + U12 ₂ + U12 ₃ + U13 ₄ ))] / I

R ₁₉ = [(U _pit - (U12 ₁ + U13 ₂ + U13 ₃ + U12 ₄ ))] / I,

Where

R ₁₈ , R ₁₉ - the value of current-carrying resistors;

U13 ₁ , U12 ₂ , U12 ₃ , U13 ₄ , and

U12 ₁ , U13 ₂ , U13 ₃ , U12 ₄ - voltage drop on the corresponding groups of LEDs;

U _pit - DC voltage on the conductive elements 9 ₁ , 9 ₂ ;

I is the magnitude of the electric current in the corresponding groups of LEDs.

The voltage drop across the LEDs (electrical current) is indicated in the technical documentation for the LEDs.

The value of the current-setting resistors 24, 25 according to the second embodiment can be calculated by the following formula:

R ₂₄ = [(U _pit - (U23 ₁ + U22 ₂ + U23 ₃ + U22 ₄ + U23 ₅ ))] / I

R ₂₅ = [(U _pit - (U22 ₁ + U23 ₂ + U22 ₃ + U23 ₄ + U22 ₅ )] / I,

Where

R ₂₄ , R ₂₅ - the value of current-carrying resistors;

U23 ₁ , U22 ₂ , U23 ₃ , U22 ₄ , U23 ₅ and

U22 ₁ , U23 ₂ , U22 ₃ , U23 ₄ , U23 ₅ - voltage drop on the corresponding groups of LEDs;

U _pit - DC voltage on the conductive elements 9 ₁ , 9 ₂ ;

I is the magnitude of the electric current in the corresponding groups of LEDs.

The voltage drop across the LEDs (electrical current) is indicated in the technical documentation for the LEDs. The DC voltage on the conductive elements 9 and 92 is set during operation at the facility, for example, by a source of on-board DC voltage of a helicopter or aircraft.

The color of the glow of the LEDs, and therefore the inscription of the information template 15 can be red, yellow, white, green, blue for compliance with OST 1.005.33-87.

Claims (2)

1. A signal board containing a housing with a lid and a cap with a viewing window, a pair of rows of LEDs are installed in the housing, placed parallel to each other on an electrical insulating board with leads connected to the conductive elements, a diffuser, an information stencil, a neutral filter, differing in sequence, are installed over the LEDs the fact that the casing is made in the form of a U-shaped element, inside of which a pair of L-shaped elements is rigidly fixed to its side walls at one of the edges with a pair of threaded holes in each of them, to one of which a screw is secured by a cover through the holes made, a cap with a viewing window is fixed to the other threaded holes, an electrical insulation plate with conductive elements inserted into the holes is installed at the opposite edge of the U-shaped housing element, a diffuser It is made combined and contains a porous element made of a translucent material and a frosted lavsan light-scattering film with chemical spraying of milk color, and four LEDs installed in a pair of parallel arranged rows are connected in a pair of groups so that when applying direct electric bias to them in one group, the first extreme LED from the first row, the second and third LEDs from the second row, the fourth LED from the first row of LEDs, and in the second group, the first LED from the second row, the second and third LEDs from the first row and the fourth LED from the second row, the conclusions of which are included in each group of current-setting res Orae and total output connected respectively to the conductive elements, wherein the neutral density filter is applied to the antiglare coating. 2. A signal board containing a housing with a lid and a cap with a viewing window; a pair of rows of LEDs are installed in the housing; they are parallel to each other on an electrical insulating board with leads connected to conductive elements; a light diffuser, an information stencil, and a neutral light filter are installed in series over the LEDs the fact that the body is made in the form of a U-shaped element, inside of which a pair of L-shaped elements is rigidly fixed to its side walls at one of the edges with a pair of threaded holes in each of them, to one of which a cover is fixed through screws through holes, a cap with a viewing window is fixed to the other threaded holes, an electrical insulation plate with conductive elements inserted into the holes is installed at the opposite edge of the U-shaped element, a light diffuser made combined and contains a porous element made of a translucent material and a frosted lavsan light-scattering film with chemical spraying of milk color, and installed in a pair of parallel rows of five LEDs each are connected in a pair of groups so that when applying direct electric bias to them in one group, the first extreme LED from the first row, the second LED from the second row, the third LED from the first row are turned on, the fourth LED from the second row and the fifth LED from the first row, and in the second group the first extreme LED from the second row, the second LED from the first row, the third LED from the second row, the fourth LED from the first row and fifth LED from the second row, through which the terminals included in each group, and common voltage driving resistor output connected respectively to the conductive elements, wherein the neutral density filter is applied to the antiglare coating.

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