RU175439U1 - Artificial lighting device - Google Patents

Abstract

The artificial lighting device comprises a light-emitting semiconductor device, a power supply unit of the light-emitting semiconductor device, and a light guide in which the light guide is stranded, one end of the light guide is fixed to the connector tip, the power supply unit of the light-emitting semiconductor device, the light-emitting semiconductor device and the connector tip of the light guide are made cooling radiators located outside the housing, the device is used in conjunction with a cooling system radiators, which forms a directed air flow, while simultaneously blowing all cooling radiators, the fibers of the fiber are tightly pressed by the tip with a minimum distance between the light-transmitting fiber cores, and outside the boundaries of the tip-connector, the fibers are distributed over several bundles, each of which is made with a diffuser tip, at the end of the bundle, not fixed in the tip of the connector, and the device can be made oriented with respect to the blowing system with keeping the maximum temperature on the surface of the cooling radiators at a minimum level, and the connector tip is fixed in the cooling radiator-adapter with providing thermal contact between it and the cooling radiator of the LED.

Description

This utility model relates to lighting technology, in particular to lighting devices using fiber optic optical fibers and can be used to illuminate workshops, industrial and industrial machines, workplaces and premises, mainly hazardous areas, spark, fire and explosive rooms, rooms with high humidity, containing chemical vapors, underwater structures, as well as with high or low temperature from -260 to + 180 ° C, also a utility model can be used ovana with a lack of space for installing lighting fixtures.

Known lighting device according to US patent No. 8721195 (B2), published 05/13/2014, IPC: G02B 6/4204, containing a housing in which light emitters and radiators are installed, providing heat removal from the emitters and their power supplies. The device also contains a light guide, one end of which is used to emit light, which provides illumination of the object, and the other is equipped to provide mechanical fastening of the light guide to the housing of the lighting device with the supply of light energy from light emitters to at least one fiber of the light guide.

The disadvantage of this device, as well as other devices known from the prior art, is the tendency to destruction or damage of structural elements under the influence of high temperatures, which limits the luminous flux transmitted through a unit cross-sectional area of the light fibers, and, accordingly, leads to inefficient use of light fibers and emitters. As a negative feature of devices of this class, one can point to the low transparency of the material of optical fibers for infrared radiation, due to which there is a conversion of infrared radiation into heat, the emission of which accompanies the operation of the power LED. The specified conversion occurs on the first centimeters of the input of the LED cable and requires a tap to exclude thermal damage to the device. In addition, heat is generated at the input of the fiber due to the imperfection of the technology for forming the introductory part of the fiber.

The technical result achieved when using the utility model is to eliminate the disadvantage of devices known from the prior art, namely, to increase the specific luminous flux up to 52,000 lm at the exit from the optical fiber transmitted through a unit cross-sectional area of optical fibers, more efficient use of light-emitting devices by increasing the specific luminous flux emitted by light-emitting devices, for example, LEDs or semiconductor lasers, while increasing the com aktnosti illuminating device distances and improving software, on which can be devoted to the light energy from the light-emitting devices using optical fiber. In addition, in the particular case of the implementation of the utility model, when using several optical fibers to illuminate several objects, the most durable solution for lighting in aggressive environments (up to 50 years), at industrial facilities, as well as significant savings in electricity and materials through the use of one light source instead of several light sources, each of which has less power.

The indicated technical result is achieved due to the fact that the artificial lighting device uses an artificial lighting transmission system (SPIO), the device contains a light emitting semiconductor device, one power supply unit or several power supply units of a light emitting semiconductor device, made, for example, in the form of a single LED or LED matrix and a light guide, in the device the light guide is multi-strand, one end of the light guide is fixed in the connector tip, while the power supply unit is light a radiating device, a light-emitting device, and a fiber-optic connector-tip are made with cooling radiators located outside the casing, the device is used in conjunction with a cooling system of cooling radiators, shown in the drawings as a fan forming a directed air flow, while simultaneously blowing all cooling radiators, fiber compressed by the tip with a minimum distance between the light transmitting cores of the fibers and beyond the boundaries of the connection tip The fiber is distributed over several bundles, each of which is made with a diffuser tip, at the end of the bundle not fixed in the connector tip, while the fan is oriented to ensure that the maximum temperature on the surface of the cooling radiators is kept to a minimum, and the connector tip is fixed in the cooling radiator-adapter with providing thermal contact between it and the cooling radiator of the LED.

In the particular case of the implementation, the cooling radiator of the light-emitting semiconductor device is made with through gaps between the cooling fins, providing access to the air flow to the elements of the device with the highest temperature, while the ribs are oriented perpendicularly or parallel to the axis of illumination of the light-emitting device, and the connector tip is fixed in the cooling radiator a light-emitting semiconductor device with an air gap between the radiating surface of the light-emitting floor the conductor device and the end face of the connector tip to ensure the passage of air flow generated by the blower through the through spaces between the cooling fins. The fibers of the fiber can be made with a hexagonal cross-section, at least inside the tip of the connector. The fibers of the fiber, within the tip of the connector, can be made partially without a reflective layer, and the inner surface of the tip of the connector is made mirrored. The cooling radiator of the light-emitting device may be made with a split section, the device may comprise means for compressing the LED cooling radiator around the connector tip in the region of the split section, and the compression means may be made in the form of a clamp. In the particular case of implementation, the power supply unit of the light-emitting device is configured to control the load current, and the light-emitting semiconductor device can be made in the form of an LED matrix.

The power consumption of the LED (LED matrix) can be from 150 to 530 W, which determines the maximum power of the LED power supplies in this case, the power supplies can be configured to control the power consumed by the LED (dimming).

The device comprises a fan for blowing cooling radiators, which generates a directed air flow, while simultaneously blowing all cooling radiators, namely, a LED or spotlight radiator, an adapter radiator or a connector tip, and a radiator for a common fiber input, moreover, the fiber fibers within the common input of the connector tip are tightly crimped a tip that ensures the use of a minimum amount of glue between the light guide fibers and maximum filling of the space Inside the light guide fiber tip. This design of the connector tip provides a minimum distance between the light transmitting fiber cores. Beyond the boundaries of the connector tip, the fibers are distributed over several bundles. In the particular case of implementation, the total number of light guide fibers in the bundle may be 32, and each of the individual optical fibers of the bundle may have one or more light guide fibers. Separate optical fibers of the bundle may be equipped with diffuser tips at the ends of the optical fibers not fixed in the connector tip.

The device is oriented towards the blowing system so that the maximum flow of cooling air is oriented to the points with the highest temperature, in particular, to the place of installation of the substrate of the LED or LED matrix, or to the point of the cooling radiator of the LED or LED matrix with the highest temperature. As the air-conditioning system, the inlet channel of the exhaust ventilation system, the exhaust channel of the supply ventilation system, the air conditioning unit, and also the fan installed on or near the device can be used. The flow of cooling air removes heat from points having an initially elevated temperature created by the flow of heat from the LED or the cooling substrate of the LED, as well as on the remote surface of the cooling radiators. The tip of the connector of the common input of the fiber is fixed in a cooling radiator-adapter, made with through gaps between the cooling fins. The tip of the connector for the common input of the fiber is fixed in the cooling radiator-adapter with the required thermal contact for heat transfer, for example, from the LED to the fiber.

Thus, the location of the radiator blowing system is set to ensure the maximum flow of cooling air to the device with the maximum temperature and heat transfer. The implementation of the most efficient arrangement of the fan can be carried out either empirically, or using temperature monitoring systems and feedback units that determine the effectiveness or the negative result of changing the location of the radiator.

In the particular case of implementation, the radiator of the light source (searchlight) is made with through holes or spaces between (cooling fins), oriented to ensure unhindered supply of air flow over the entire area of the cooling radiator and the substrate of the LED itself, that is, to the place where the point with the highest temperature.

The tip of the common input of the fiber is fixed in a cooling radiator-adapter with the ability to control the distance from the fiber to the LED. Moreover, in the particular case of the implementation of the device, the length of the tip of the connector can be chosen so as to limit the minimum distance between the end of the tip and the surface of the LED. This ensures the free passage of the air flow generated by the blower through the through spaces between the cooling fins of the radiator of the connector adapter. The cooling radiator of the spotlight itself is at the same time an element for attaching the adapter radiator of the connector and one common input of the multicore fiber. The common input may have an internal diameter of the part filled with fiber-optic fiberglass from 28 mm to 35 mm, which ensures maximum transmission of the light flux into the fiberglass, this internal diameter of the common input ensures minimal loss of the light flux from the 32 mm LED to the general temperature-resistant fiber input 180 ° C. In the particular case of the implementation of the utility model, the inner diameter of the common input filled with fiberglass may be equal to the diameter of the light-emitting part of the LED, for example 32 mm In addition, the cross-sectional shape of the interior of the common input may correspond to the shape of the LED array. In particular, it may have a square cross section.

The essence of the utility model is illustrated by images, which depict:

In FIG. 1 view of the device with the filament of the optical fibers (searchlight) removed from the fan side;

In FIG. 2 is a side view of the device in partial section;

In FIG. 3 view of the device from the side of the LED;

In FIG. 4 is a view of a device without attached optical fibers in a perspective view;

In FIG. 5 general view of the fiber bundle;

In FIG. 6 image of a searchlight — parts of a device with a removed fiber bundle;

In FIG. 7 image of a common tip of the optical fibers;

In FIG. 8 shows the tips of individual optical fibers with diffusers removed.

The device shown in FIG. 1-5 contains:

The housing 13 (Fig. 4) on which the cooling radiator adapter 2 of the LED 1 (Fig. 2) is located, which can also be made in the form of an LED matrix, a power supply 4, in the particular case of implementation, partially protruding from the housing, and partially located in the housing, the handle-mount 5, the electrical junction box 6 of the device, designed to connect the power cable of the device’s power supply, the junction box 7 of the fan, designed to connect the motor windings of the fan to the electrical terminals, veins ilyator 8 and cooling radiators 3. The apparatus may comprise one or more regulated power supplies (dimmer). Power supplies can provide power to a light-emitting semiconductor device with power up to 150 W to 530 W. The light-emitting semiconductor device can be mounted on a heat-conducting plate connected to a radiator 2 located outside the housing.

Outside the casing, there are also casing radiators used to remove heat, including from the unit or power supply units of the device and a temperature sensor 9 (Fig. 1). The radiators of the case can be made with thermal contact with the power supply units of the LED, as well as with the heat sink element of the LED, and can simply be installed on the case, inside of which heat transfer means from the power supplies and the plate to the external radiators are installed. These heat transfer means can be made in the form of fans installed inside a sealed enclosure or in the form of heat pipes, or other means for transferring heat, for example, heat pumps.

The light guide is made with a tip, for fastening of which fastening means can be provided on the LED cooling radiator, made, for example, in the form of clamps or collet clips, the location of which on the LED radiator provides mechanical and thermal fastening of the LED heatsink and the light guide tip equipped with a radiator.

In addition, an important part of the implementation of the device is the layout of the distribution of the optical fibers in the end part of the bundle from the LED side. The density of the elements involved in light transmission per unit area should be maximum, and the amount of binder, for example, glue, should be minimal, for the scattering of light energy on parts of the surface that scatter light. In this case, the end parts can either be cleaned from the reflective layer, or can be made with a hexagonal cross-section, which ensures tight contact of the light-conducting fibers, practically without gaps. In addition, the light guide fibers can be made of thermoplastic materials. In the latter case, a hexagonal shape or a shape close to hexagonal is attached to the fibers during heat treatment and the use of a binder is not required.

As shown in FIG. 1, the LED cooling radiator is made in the form of separate plates (fins) connected (not shown in the image) by pins using spacer washers or bushings made of a material with high thermal conductivity. This embodiment provides good thermal conductivity of the cooling radiator of the LED and provides the formation of channels through which the air flow generated by the fan can pass.

On the one hand, from the side of the end part, the connector tip (Figs. 2 and 5) is made of a cylindrical 14 shape, which makes it possible to fix it inside the cooling radiator of the LED. On the other hand, the connector tip is provided with a radiator 10 of a common input, which can be made integrally with the cylindrical part of the connector tip, that is, in the form of a monolithic part. Also, the specified cooling radiator can be attached to the cylindrical part of the tip-connector with providing thermal contact. Thermal contact can be achieved, for example, by using thermal paste, or by welding or soldering with a solder resistant to melting in the operating temperature range of the device, or by tight mechanical connection, for example, by crimping or pressing the radiator onto a cylindrical part.

The optical fiber (Fig. 5) is multi-strand, moreover, the light-conducting fibers are distributed over the bundles 11 and combined in the ferrule-connector 14 and secured therein, using, for example, crimping or crimping the ferrule, or using heat-conducting transparent glue. When crimping the tip, the distance between the light guide fibers becomes minimal, which ensures the most efficient use of light energy, especially when the fibers are hexagonal, at least inside the tip connector. Additionally, the fibers of the fiber can be made without a reflective layer in part of the length inside the ferrule, the inner surface of which can be mirrored.

Light scattering devices 12 (FIGS. 2 and 5) or diffuser tips, such as lenses, can be located at the separate ends of the bundles. In the particular case of the implementation of the utility model, the light-scattering devices can also be equipped with radiators (not shown in the drawings) designed for passive cooling of the tips of the optical fibers.

The fan for blowing cooling radiators, which generates a directed air flow, which ensures blowing of all cooling radiators, can be mounted on a hinged mount or other mount, providing for the possibility of changing the position of the fan and fixing it in this position. Such fastening is necessary to be able to control the thermal regime of the device elements, in particular, to direct the maximum air flow to the most heated sections of the cooling radiators. In the particular case of implementation, servo drives can be used to control the position of the fan, and the position of the fan is determined using temperature sensors of radiators, made, for example, in the form of a thermistor, thermocouple or thermal imager located next to the case.

The tip of the connector is fixed in the cooling radiator-adapter with the provision of adjusting the distance 15 between the LED and the end of the fiber bundle, as well as providing the minimum required thermal conductivity of the contact point of the connector with the radiator.

The cooling radiator of the spotlight is made with through ribs, the planes of which can be oriented both horizontally and perpendicularly to the axis of light emission of the LED, and through holes are made between the ribs. With this embodiment, the heatsink of the LED, and the tip-connector can be fixed in the cooling radiator adapter at the closest possible distance from the LED. In this case, when passing the air flow between the plates forming the radiator fins, the air heated on the surface of the LED or LED matrix is removed from the space between the LED and the tip of the fiber. Such an air curtain prevents the tip of the fiber from being heated by convection, reducing the operating temperature of the end of the fiber. The use of means for introducing turbulence into the air flow from the LED side can additionally provide an improvement in the heat removal from the LED by the air flow. As a means of introducing turbulence into the stream, a barrier to the air flow path from the LED side can be used.

In the particular case of implementation, the blower is located with the minimum interaction of the air flows heated by one cooling radiator with the surface of another cooling radiator, for this the cross-section of the air flow generated by the fan must correspond to the projection area of the casing and the radiators installed on the casing, on the plane in which impeller radiator.

The listed structural elements provide in experimental products the output of the light flux from the fiber from 14445 lm to 52710 lm, increasing the permissible power of the LED to 530 W and higher, the possibility of additional focusing of the light spot on the input surface of the fiber, to ensure uniform illumination of the fiber end over the entire area. The adjustment in the radiator-adapter of the distance from the LED to the general input of the fiber, the use of a mirror surface (inside the radiator-adapter) provides an increase in the limit value of the light flux transmitted through the fiber in comparison with devices with similar weight and size parameters, which currently form the maximum light flux in 5560 lm.

The device operates as follows:

Previously, or during the operation of the device, using a tracking and actuating equipment, a point is determined among the radiators with a maximum temperature, and the surface with the maximum temperature can also be the surface of the LED, after which the fan is oriented in such a way that, with the given parameters, cooling, the cooling effect at the maximum heated point of the device, for example, on the surface of a light-emitting diode, was maximum.

Further results can be adjusted. For example, if after correction, more heated or critically heated points have formed, the device is turned off while maintaining the fan’s operability, and after cooling the device with a fan, the fan is reconfigured, for example, its position is adjusted, then the device is turned on again when the temperature enters the operating range. The number of iterations may not be limited.

In another embodiment, tracking units for heating critical points of the device using temperature sensors and feedback units that can change the position of the fan, as well as its performance, can be used. For forced air cooling of the power elements of the device, namely, the aluminum radiator of the power supply units on the device body, the aluminum radiator-adapter from the LED to the fiber-optic fiber, it should be noted that the maximum temperature maintained by the fiber is 180 ° C.

For a predetermined level of illumination of the object, for example, for monitoring the technological process in the production plant through the viewing windows, with the required level of illumination of the working surface, a set of fiber-optic fibers is selected that form the lighting points according to the number of required light sources and the required total luminous flux. Fibers can be combined in advance in the connector tip in accordance with the specified lengths, or selected as necessary according to the individual lighting requirements of this object. The other ends of the bundles may be provided with diffusers of the light flux.

With this configuration, the luminous flux emitted by each diffuser can be selected individually and set by the number of light-conducting fibers in one bundle. If necessary, the harnesses are made of the same or different lengths.

After selecting the required fiber bundle, the tip with the radiator-adapter is firmly attached to the radiator of the LED. After the above activities, the device is ready for use.

In the particular case of implementation for aggressive environments, a searchlight (light flux generation unit) of an artificial lighting transmission system (AECS) is removed from rooms with increased danger, and a light stream enters through premises through a light guide into rooms with increased danger, for example, with an aggressive environment. This embodiment is also possible for the conditions of the possible presence of explosive gases, spark and explosive rooms, fire hazardous premises, in conditions of increased radiation background, high humidity, underwater, dusty rooms, rooms and workshops with elevated temperatures up to 180 ° C, and with chemical fumes.

In the conditions of technological accidents and catastrophes, the device can be disconnected from the public electric network and connected to another network, for example, an emergency generator, which ensures reliable and uninterrupted lighting of objects. The luminous flux continues to enter the emergency room through the light guide, making it possible to evacuate personnel or eliminate the consequences of accidents.

The fan of the external cooling system can be made using a brushless motor, and with no rubbing parts, while the temperature monitoring system can be installed on the cooling fan, which turns off the spotlight when the temperature exceeds the permissible value. After the device is turned off due to overheating, the fan continues to cool the SPIO, and when the permissible operating temperature is reached, the system automatically turns on and resumes lighting the object.

In conditions of elevated ambient temperature, you can install a fan with higher performance, or use local air conditioning systems.

The fibers of the fiber are flexible, due to this it is possible to direct the light at any angle, to places where maximum illumination is needed. The light scattering angle can be set from 10 ° to 360 °.

Claims (8)

1. The artificial lighting device comprising a light-emitting semiconductor device, a power supply unit of the light-emitting semiconductor device and a light guide in which the light guide is multicore, one end of the light guide is fixed to the connector tip, the power supply unit of the light-emitting semiconductor device, the light-emitting semiconductor device and the connector tip of the light guide made with cooling radiators located outside the housing with the possibility of simultaneously blowing all the cooling fibers, the fibers of the fiber are tightly compressed by the tip to ensure a minimum distance between the light-transmitting cores of the fibers, and beyond the boundaries of the tip-connector, the fibers are distributed across several bundles, each of which is made with a diffuser tip, at the end of the bundle not fixed in the connector tip, with this connector tip is fixed in the cooling radiator-adapter with providing thermal contact between it and the cooling radiator of the LED. 2. The artificial lighting device according to claim 1, characterized in that the cooling radiator of the light-emitting semiconductor device is made with through gaps between the cooling fins, providing access to the air flow to the elements of the device with the highest temperature, while the ribs are oriented perpendicular to or parallel to the axis of the light emitting device and the connector tip is fixed in the cooling radiator of the light-emitting semiconductor device with an air gap between the emitting the surface of the light-emitting semiconductor device and the end face of the tip-connector with the passage of air flow through the through gaps between the cooling fins. 3. The artificial lighting device according to claim 1, in which the fibers of the fiber are made with a hexagonal cross-section, at least inside the tip of the connector. 4. The artificial lighting device according to claim 1, in which the fibers of the fiber, within the tip of the connector, are made partially without a reflective layer, and the inner surface of the tip of the connector is made mirrored. 5. The artificial lighting device according to claim 1, wherein the cooling radiator of the light-emitting device is made with a split section, the device includes means for compressing the cooling radiator of the LED around the connector tip in the region of the split section. 6. The artificial lighting device according to claim 5, in which the compression means is made in the form of a clamp. 7. The artificial lighting device according to claim 1, characterized in that the power supply unit of the light-emitting device is configured to control the load current. 8. The artificial lighting device according to claim 1, in which the light-emitting semiconductor device is made in the form of an LED matrix.

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