RU195638U1 - Light annunciator - Google Patents

Abstract

The utility model (PM) refers to devices intended for use in burglar, fire or burglar alarm systems (OPS) as a means of warning light and, if necessary, sound alarms to alert people about an emergency and / or indicate escape routes . The light annunciator comprises a housing with a base in the form of a flattened rectangular parallelepiped elongated horizontally. In this case, the housing includes a translucent cover having a convex front side, which contains an information field (working area) with information symbols made in the form of a stencil. Inside the case there are LED light sources located on the board and installed in the upper part of the case, together with a power supply and control unit, an audio indication unit. In this case, the cover has the form of a cylindrically convex variable curvature of a curved surface with beveled sides, and the front side has a straightened working area (information surface). In addition, a diffuser is located at the bottom of the base, opposite the light sources; the reflecting side (inclined plane) of the diffuser is beveled at an angle> 100 ° to the plane of the base. 11 ill.

Description

The utility model (PM) relates to devices intended for use in burglar, fire or burglar alarm systems (OPS) as a means of warning light and, if necessary, sound alarms to alert people about an emergency and / or indicate ways evacuation. Also, the utility model can be used for the production of various utilitarian and service light indicators and signs (GOST 26342-84; GOST R 53325).

Known modern devices for displaying constant information by illuminating the information carrier with an artificial light source. The front (front) surface of such a device, as a rule, has a flat information panel in the form of a combination of light-transmitting and opaque elements with the formation of a graphic image and / or inscription.

The luminous element, as a rule, is made in the form of an assembly of light-emitting diodes (LEDs) of monochromatic color, installed, as a rule, so that their optical axes are oriented in one direction:

1) along the information panel; OR

2) towards the information panel, forming an angle of 90 ° with its plane (i.e., the axes coincide with the normal to the plane of the information panel).

These constructions use such an important advantage of LEDs over other light sources as the unidirectionality of the spatial distribution of radiation. In this case, the efficiency of the luminous element with the luminous body glowing on one side is much higher than that of isotropic light sources.

Also, the advantages of the luminous element, made in the form of an LED assembly, include low power consumption due to higher light output; high reliability and mechanical strength; small sizes of assembly elements, the ability to install them directly in any shape by design.

However, multi-element assemblies distributed along the plane of the LED, depending on their individual lighting characteristics, are, generally speaking, a luminous element with uneven brightness within the dimensions of the luminous body and, therefore, do not provide uniform illumination.

Therefore, the designs of light panels use transparent plates, additional reflective and scattering surfaces (lenses, reflectors, diffusers, diffusers) and their combinations, otherwise it is impossible to ensure uniformity of illumination and it is difficult to achieve uniform illumination of the front surface. Those. the problem of uniformity of illumination of the information field is solved by complicating the design and / or by applying special layers, coatings, etc., which complicates the manufacturing process and increases the cost of devices.

Each of the LED assemblies forms a light beam, and the LED assembly as a whole forms a luminous flux with uneven brightness within the size of the luminous body. The luminous flux generated by the LED assembly falls on diffuse-reflecting surfaces and the information panel with opaque sections of the banner, and after multiple diffuse reflection due to spatial redistribution, it is converted into a luminous flux with a uniform distribution of brightness over the front surface of the information panel in the area of the light-transmitting sections, is additionally scattered these sections and enters the outer space, highlighting the opaque sections of the information panel at the back.

Since light is not evenly distributed, brightness and angle of illumination are important parameters for LEDs. Another important parameter is the luminous flux or “power” of light in the flux, which can be determined if the light intensity and the angle of illumination are known.

The luminous flux is an indicator of the "power" of light, taking into account the wavelength that is perceived by man. It is clear that the angle of illumination very much affects the luminous flux. So, an LED 5000 mcd lamp with an angle of illumination of 60 degrees is four times more powerful than a similar one with an angle of illumination of 30 degrees. At the same time, LEDs of the same brightness can have different energy consumption. This circumstance is taken into account when choosing the parameters of a light emitting diode.

As you know, there are various types of LEDs with a variety of radiation schemes. The LED with a narrow angle of illumination creates a bright, sharp point lighting, but does not give any surface illumination. Since light spots are formed when the radiation from the light sources is perpendicular to the front surface, this is why, as a rule, in such constructions the light sources are placed on the side of the light panel to obtain a uniform (uniform) illumination on the radiating surface that is comfortable for the eye to perceive.

The well-known “Universal LED information panel” is described in the RF patent No. 53481 for PM (IPC G09F 9/00, B60Q 3/04, published May 10, 2006) (see the website http://www1.fips.ru/ in the section “Open registries” - as of October 1, 2019).

The light panel contains a triangular case, having a base, an upper shelf, located at an angle to the base, a diffuser (inclined side of the housing) with information symbols made on the basis of a stencil, located between the outer edge of the shelf and the lower edge of the base. Inside the case, on the inner side of the shelf, there is a board with LED light sources in the form of an LED assembly, a power supply and control unit. The inner surface of the base has a reflective coating.

Several technical solutions are proposed:

the shelf is located at right angles to the base, and the central axis of the LEDs run parallel to the plane of the base;

the shelf is located at right angles to the diffuser so that the central axis of the light fluxes of the LEDs run parallel to the plane of the diffuser;

the shelf is located at an acute angle to the base and the diffuser so that the central axis of the light fluxes of the LEDs pass between the base plane and the diffuser plane.

The disadvantages of the well-known universal LED information panel:

in such a triangular section of the housing, in order to obtain uniform illumination of information symbols, they resort to corrugation of the inner surface of the base to increase reflective properties,

apply a large number of LEDs, which increases the complexity and total cost of production.

At the same time, it is not possible to achieve uniform distribution of light on the front surface (over the information field), although there is an inclination of the information surface (diffuser cover) towards the observer and many LEDs. And by functionality, the universal LED information panel is not suitable for use in OPS systems.

Also known is the "Information Board" according to the patent of the Russian Federation No. 162287 (IPC G09F 13/00, priority dated September 16, 2015). The information board (route indicator) contains a box-shaped case, which has a cross-section in the shape of a rectangular trapezoid, the base of which is a diffuser cover, and a reflector located on the inner surface of the case base, opposite the translucent diffuser cover (see the website http: // www1 .fips.ru / in the section “Open registries” - as of 01.10.2019). The box-shaped case along the perimeter of the leading edge has an L-shaped profile, into which a structural element is inserted as an easily removable front panel - a light-transmitting diffuser cover containing an information field. Inside the casing has an LED strip (linear LED light source) glued to the lower end surface of the casing, with the preferred direction of radiation parallel to the plane of the translucent diffuser cover. Multiple reflection occurs due to a change in the geometry of the base (“built-in” reflector) and the application of diffuse reflective material on the inner surface of the base of the body (two-thirds of the area, starting from the opposite edge of the light-emitting source).

The analogue has a reflector (reflector), but there is no tilt of the information surface. The slope of the information surface provides better information visibility (overview), which is very critical for OPS devices. In addition, the disadvantages of this design include the difficulty in achieving the necessary illumination values of information signs in given directions for typical viewing angles.

It is known that the light siren for OPS systems should have 2 operating modes of the device - blinking and not blinking (glowing) (according to GOST - see below).

Obviously, the number of LEDs in a luminous sign is determined by the size of the display panel, radiation pattern of the LEDs, the gap between the LEDs and the display panel.

At the same time, in case of failure of individual LEDs of the light source, a disadvantage inherent in such a luminous sign is manifested, namely, that this failure leads to a noticeable violation of the uniformity of lighting. Therefore, first of all, when developing new devices, they solve the problem of uniform illumination of the information field contained on the light-transmitting front panel.

It is also known that the dimensions of the construction of the information board, the color and dimensions of the information field (signs), the maximum visibility (distance of distinguishing), the location of sirens and other device parameters for security, fire or fire alarm systems are regulated by regulatory documents, for example:

GOST R 12.4.026-2015 Occupational safety standards system. Evacuation signs;

SP 3.13130.2009 Fire protection systems. Warning and evacuation management system in case of fire. Fire safety requirements;

GOST R 53325-2012 Fire fighting equipment. Technical means of fire automatics; NPB 160-97 Colors are alarm. Signs of fire safety. Types, sizes, general technical requirements;

SP 52.13330.2016 Natural and artificial lighting. Updated edition of SNiP 23-05-95;

GOST 26342-84 Means of security, fire and security and fire alarms. Types, main parameters and sizes;

ISO 7010: 2019 Graphic symbols. Colors and safety signs. Registered safety signs.

(see, for example, https://ru.wikipedia.org; and / or http://docs.cntd.ru/ - all on 10/01/19).

It is known that the perception of illumination of the information field of a light device (board) depends on the location of the beholder, on the type of information surface, therefore, to increase the spatial resolution of information symbols on the illuminated surface of the siren, they resort to changes, for example, in the geometry of the case of the device intended for use in OPS systems.

The closest in technical essence analogue (prototype) of the claimed utility model is a siren (bulletin board, evacuation indicator) light "Lightning-220 GRAND" (manufacturer LLC Elteh-service, Omsk, see the website https: // www. electro-mpo.ru/cataloq/ - on 01.10.19), which is intended to indicate evacuation routes in rooms for various purposes. The light unit of the siren is made on LEDs.

The light panel prototype (see Appendix 1) contains a housing and a cover that form a closed volume for placement of the electronic part of the device. The hemispherical body is made with a base in the form of a flattened rectangular parallelepiped elongated horizontally, with the formation of a cylindrical convex non-removable section, smoothly going to the upper end side. The cover is an information field with information symbols made in the form of a stencil, has a front side in shape - hemispherical, with straight sides, made of translucent material. On top of the base, inside its non-removable section, are located: LEDs located on the board (LEDs glow - white); power supply and control unit; sound indication unit. The enclosed enclosure volume functions as a scattering element to create a more uniform illumination of information symbols after multiple reflection of LED radiation. (see, for example, https://www.tinko.ru/cataloq/product/210130/ or https://docplayer.ru/72177462-Soderzhanie-svetovye-tabo-i-opoveshchateli.html - all on 10/01/2019) .

Since the optical axes are oriented mainly along the base towards the lower edge of the housing cover, there is a “flare” around the perimeter of the cover through slots and translucent spots on the housing information panel. Therefore, the disadvantage of this design of the display panel with light indication is the lack of clarity of the information display due to the uneven illumination of the graphic image on the surface of the cover.

The task to which the claimed utility model is directed is the development of a light siren for OPS systems, made in the form of a simple and reliable design with smoothly distributed illumination of information symbols with a bright and uniform illumination of the information surface.

The technical task of the claimed utility model is to increase the information alertness of the light siren (increase the contrast of character recognition).

The technical result of the developed utility model is also the improvement of consumer perception of information at a distance due to the reduction of “flare” of the housing cover.

The technical result is achieved due to the fact that the light siren contains a housing that forms a closed volume for placement of the electronic part of the device, with a base in the form of a flattened rectangular parallelepiped elongated horizontally. In this case, the housing includes a translucent cover having a convex front side, which contains an information field (working area) with information symbols made in the form of a stencil. Inside the case there are LED light sources located on the board and installed in the upper part of the case, together with a power supply and control unit, an audio indication unit.

According to an embodiment of the utility model, the lid has the form of a cylindrically convex variable curvature of a curved surface with beveled sides, and, unlike the prototype, the front side has a straightened working area (information surface). Unlike the prototype, at the bottom of the base, opposite the light sources, there is a diffuser; the reflecting side (inclined plane) of the diffuser is beveled at an angle> 100 ° to the base plane.

The essence of the proposed technical solution is illustrated by drawings:

In FIG. 1a and 1b, a schematic representation (general view, sectional view) of a particular embodiment of the claimed PM “Light Annunciator” is presented, where 1 is a housing, 2 is a cover, 3 is a working area (information field of a cover), 4 is a base, 5 is a shelf of a cover, 6 - diffuser (reflector), 7 - connector line, 8 - board, 9 - LED, 10 - microswitch (tear-off sensor, tamper); a

in FIG. 2 shows the housing assembly, 3/4 front view, side to side, left;

in FIG. 3 - housing assembly, side view;

in FIG. 4 - housing assembly, 3/4 view from above from the side to the right;

in FIG. 5 is an axonometric view from the inside of the base of the housing with an installed printed circuit board;

in FIG. 6 - housing assembly, 3/4 view from left side to back;

in FIG. 7 - housing assembly, bottom view;

in FIG. 8 is a front view of the information panel;

in FIG. 9 - housing cover, axonometric view 3/4 from the inside;

in FIG. 10 - housing cover, 3/4 view from the left side with a view of the front and bottom sides;

Appendix 1 presents a prototype.

The annunciator contains a box-shaped housing 1, consisting of a cover 2 with a working area 3 (information field) along the frontal plane of the housing 1 and the base 4, detachably connected to each other by interlocking the locking latches and mating holes (see, for example, Fig. 1a, FIG. . 2). The luminous element is made in the form of an LED assembly 9, placed on the board 8. The LEDs 9 are mounted in a row on the base 4, in the upper part of the housing 1, together with the power supply and control unit, an audio indication unit (not shown). Unlike the prototype, the diffuser 6 is located at the bottom of the base 4, opposite the light sources 9; the reflecting side (inclined plane) of the diffuser 6 is made beveled at an angle> 100 ° to the plane of the base (see, for example, Fig. 1a, Fig. 1b, Fig. 5).

Light annunciator operates as follows. When applying power (Fig. 1a, b, the power supply circuit is not shown) to the LED assembly 5, each of the LEDs forms a light beam, and the luminous element as a whole - a luminous flux with uneven brightness within the size of the luminous body.

In a preferred embodiment, the PM optical radiation of the LED 9, diverging at a scattering angle of 120-140 °, is mainly directed downward, parallel to the base 4, and falls on the reflector 6. Further, refracting at an angle greater than 100 ° to the plane of the base 4, the reflected radiation is redirected to the side of the working zone 3 of the device, on a flattened information surface 3 having an inclination towards the observer (see, for example, Fig. 1b, Fig. 2-4, Fig. 5).

In addition, the luminous flux generated by the LED assembly 5 falls on the diffusely reflecting inner surfaces of the housing 1, which is a closed volume, and, in particular, on the translucent cover 2 having a convex working area 3 (information surface) with information symbols, and after multiple diffuse reflection due to spatial redistribution, it is converted into a luminous flux with a uniform distribution of brightness along the front surface of the information field 3 of the lid 2 in the zone of light-transmitting sections area 3. The information field 3 in this embodiment of the utility model is made in the form of a banner of an opaque light-transmitting (translucent) vinyl film of green color, in which cutouts are made, the combination of which with opaque portions of the film forms a graphic image on the cover 2 (see, for example , Fig. 1b, Fig. 2, Fig. 4).

Thus, the "luminous" mode of operation of the siren is realized. In the event of an emergency, the device switches to the 2nd mode of operation - blinking, and, depending on the model of the device, the control unit starts an audio / voice alarm.

The reflector (diffuser) 6 is made in the process of casting the housing 1 (constructive) and is located below, so it additionally redirects the incident light flux onto it into the working zone 3. The location of the diffuser 6 in the path of the light flux allows increasing the intensity of the reflected light rays on the working surface 3 of the cover 2 , and therefore concentrate the luminous flux in the field of information (work area 3); which, in turn, leads to an increase in the spatial resolution of information symbols and leads to a reduction in the “illumination” of the outer part of the case (through the connector lines 7 from the bottom) (see, for example, Fig. 1a, 1b, Fig. 2, Fig. 5) .

Thus, a change in the design and geometry of the housing 1 of the device intended for use in OPS systems (see, for example, Fig. 2-4, Fig. 6-8) leads to an improvement in the visibility of the information field 3 at a distance (when the rooms smoke) by achieving a uniform distribution of light over the information surface of the device 3 and reducing the heterogeneity of illumination of information symbols (contrast increases).

Light annunciator is made using well-known technological equipment. The cover 2 having a small thickness (see Fig. 9-10) is made of translucent plastic, resistant to UV radiation and temperature extremes, on the surface of which information symbols are applied in any way (see Fig. 8), for example, using a stencil in the form of a self-adhesive polymer / polyvinyl chloride (PVC) film (opaque or translucent, with a transparency coefficient like that of a cover) with information symbols. For the manufacture of cover 2, for example, translucent polystyrene (or cellular polycarbonate) with a thickness of 4 mm is preferred. The base 4 of the housing 1 can be made, for example, of opaque (opaque) ABC plastic of any color that is resistant to UV radiation and temperature extremes. The cover 2 is made easily removable with a simple way of connecting, fixing and replacing information symbols.

In a preferred embodiment, an assembly of three white (InGaN) LED light sources for surface mounting such as KA-1311VWC1S (current 30 mA, power dissipation 120 mW at 25 ° C, optical center line angle 120 °; used, see Datasheet for LED, for example, at http://www.qyxled.com/ page135.html? product id = 95 - on 01.10.2019).

It should be noted that the use of the new geometry of the housing cover in the form of a cylindrically convex, variable curvature, a curved surface with beveled sides, having a front side with a straightened working area, together with the location of the reflector with an inclined plane, leads to a concentration of light flux in the information area , and as a result - to increase the level of illumination of information.

A positive technical result provided by the indicated set of design features is the improvement of indicators (level of luminescence, improved information visibility, contrast, viewing distance) by changing the design and geometry of the case.

And the use of LEDs with a wide scattering angle of 120-140 ° with the aforementioned directivity of the light flux contributes to the possibility of spacing the LEDs to each other at a greater distance without compromising the brightness and uniformity of illumination of the information field. At the same time, reducing the total number of LEDs reduces the current consumption of the device, its high efficiency.

It should be understood that the specific embodiment shown and described here is only an example for explanation and does not limit the execution of the utility model in various modifications without departing from the essence and scope of the claimed, as defined in the attached formula.

The applicant has developed a set of design documentation, made prototypes and tested them. Tests of prototypes confirmed the full implementation of the indicated destination applicants.

Light annunciator

Appendix 1. Prototype.

Claims (1)

A light annunciator comprising a housing forming a closed volume for placement of the electronic part of the device, with a base in the form of a horizontally elongated flattened rectangular box; with a translucent cover having a convex front side, which contains a working area with information symbols made in the form of a stencil; and inside the case there are LED light sources located on the board and installed in the upper part of the case, together with a power supply and control unit, an audio indication unit, characterized in that the cover is made in the form of a cylindrically convex variable curvature of a curved surface with beveled sides, and the front the side has a rectified information surface (working area), and at the bottom of the base, opposite the light sources, there is a diffuser; the reflecting side (inclined plane) of the diffuser is made beveled at an angle of more than 100 ° to the base plane.

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