Modular light-emitting diode projector. RU patent 2510644.

IPC classes for russian patent Modular light-emitting diode projector. RU patent 2510644. (RU 2510644):

F21S13/00 - Non-electric lighting devices or systems employing a point-like light source (candle holders F21V0035000000); Non-electric lighting devices or systems employing a light source of unspecified shape

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FIELD: physics, optics.

SUBSTANCE: invention relates to lighting engineering and specifically to light-emitting diode (LED) optical units used as a light source in projector-type lighting devices, primarily used to illuminate railway tracks and track spacing. In the modular LED projector, having a protective housing in which LED modules and a power supply unit are mounted, each LED module has an optical system with LED sectors which include LEDs, lenses and heat-conducting aluminium-based printed-circuit boards, wherein the LEDs are mounted at the focal point of the lens, the modular LED projector further including a cold backup LED module and vertical and horizontal position controllers of the optical system, and the LED modules are mounted on a support base which is made in form of a single even component or in form of a welded frame on a base with aluminium heatsinks, and a voltage converter is placed either directly in the housing of the heatsink of the module or in a separate housing, each sector further including detachable focusing assemblies that are unique for each LED, closing plates, wherein the focusing assemblies consist of an aspherical lens and a polycarbonate-based holder.

EFFECT: design of a modular LED projector with cold backup of sectors with maximum coaxiality of the direction of optical axes, providing different levels of light, providing heat removal and adjustment of the inclination of the projector, providing electrical safety and improved repairability.

7 cl, 3 dwg

The invention refers to the lighting equipment, namely to led optical blocks used as a light source in lighting devices projector type used mainly for lighting tracks and intertrack spaces.

Known led radiation source, contains a body with the established in it, at least four of semiconductor emitters of light in the optical range, United electric circuit, at least one basic element, the holder of the basic element with connecting conclusions and cover the lens, while the electrical circuit is made in the form of a full-wave bridge of led light sources-enabled burden of two connected in series of led light sources and the case serves as a heat sink for the heat removal from the base item, while the semiconductor light emitters made one colour or multi-coloured radiation, the radiation source is additionally contains a stabilizing resistance installed in series with semiconductor light emitters, cover the lens and light emitters installed with a gap relative to each other, in which posted by transparent or scattering elastic sealing compound, covering the lens is made of flat, spherical or as a Fresnel lens, solid-state light emitter contains at least four pn junction, semiconductor light emitters coated with phosphor, transforming radiation semiconductor light emitters in radiation white (RF patent for the invention №2444676).

Known led optical unit, including installation unit, on the external surface of which it is the first group of LEDs, fixed on the specified mounting element in such a way that their optical axes are oriented parallel to each other, and the second group of LEDs, fixed on the specified mounting element so that their optical axis oriented in space at an angle with respect to the spatial position of the optical axes of the LEDs of the first group, with mounting element is made in the form of a panel, led the first group are installed on the front of the panel at the top and fixed on the panel so that their optical axes oriented normally to the surface of the panel LEDs of the second group posted in the bottom half of the front of the panel and fixed to a panel using fixed on it catches the provisions of the LEDs so that they oticheskie axis in the plane of the longitudinal section of the panel have angular deflection down relative position of the optical axes of the LEDs of the first group, and, at least in part led the second group to the optical axis in the plane of the longitudinal section of the panel are different from each other angular deflection down relative position of the optical axes led the first group of at least part of the led of the second group recorded on the panel with fixed on it catches the provisions of the LEDs so that their optical axis in the plane of the cross-sectional panels have angular displacement with respect to the location of the optical axes of the LEDs of the first group, at least in part led to the optical axis are different from each other angular movement in the plane of the cross-section of the panel in relation to the position of the optical axes of the LEDs of the first group (RF patent for the invention №2415335).

Known modular led spotlight, containing protective housing with transparent cover, the elements of the scheme of electric power, light emitting diodes, optical system, with light-emitting element is made on the basis of a modular design, where the led modules are installed inside the protective housing, each led module consists of a cooling housing made of heat-conductive metal or of ceramics, with multilayer PCB exposed paddle on the basis of defined LEDs and elements for electrical circuits power supply and the optical system, the module also contains an electronic system that allows stepless adjustment of the axial force spotlight, the optical system in the form of flat matrix of the Fresnel lens parallel to the optical axis, while the LEDs installed in focus lenses or in the form of a matrix on the basis of the aspherical lens parallel to the optical axis, while the LEDs installed in focus lenses or from a combination of Fresnel lenses and aspherical lenses, optical system attached to the body of each module by elastic polymer composition, ensuring alignment of the optical system and the seal of the led module, or optical system attached to the body of each module by elastic polymer composition, ensuring the alignment of the optical system and the seal of the led module, the protective housing spotlight has air channels for cooling heat-removing elements counter air flow, air channels protective enclosures have grid/filters to prevent contamination of the cooling system, the body of the projector has a built-in system of additional forced cooling, transparent cap has anti-reflective coating on the inner surface of the hood, or transparent cap has hardening of the coating on the external surface of the hood, or transparent cap has anti-reflective coating on the inner surface and hardening coating on the external surface of the hood (RF patent for useful model №99104) prototype.

The disadvantages modular led spotlights are:

Poor maintainability during operation, inefficient adjustment of light and heat sink, inefficient ensure electrical safety.

The objectives of the invention are: creation of modular led spotlight cold standby sectors with maximum alignment of optical axes, providing different levels of light, ensuring heat sink and adjustments tilt searchlight, electric safety, improving maintainability during operation.

To resolve tasks proposed modular led spotlight, containing protective housing, which has led modules, power supply, with each led module contains optical system with led sectors, including LEDs, lenses and heat-conductive circuit Board on the basis of aluminum, while the LEDs installed in focus lenses, characterized in that in a modular led spotlight introduced additional led module cold backup and vertical and horizontal sliders position of the optical system, and led modules placed on the host basis, made in the form of a single equal parts or in a welded frame with a metal base with aluminum heatsinks, voltage Converter is either directly in the case of the radiator, or in a separate case, each sector additionally contains a detachable folding focusing Assembly, individual for each led, closing plates, and focusing assemblies consist of aspherical lenses and the holder on the basis of polycarbonate.

Modular led spotlight, characterized also by the fact that aspherical lenses are made on the basis of transparent Plexiglas.

Modular led spotlight, characterized also by the fact that aspherical lenses are made on the basis of transparent UV-stabilized polycarbonate.

Modular led spotlight, characterized also by the fact that the inverter is configured to step regulation of a light level.

Modular led spotlight, characterized also by the fact that the voltage Converter provides galvanic isolation led from the mains supply.

Modular led spotlight, characterized also by the fact that closing plates made on the basis of the PCB.

Modular led spotlight, characterized also by the fact that closing plates made on the basis of polymeric material

The proof of the essential differences:

- application of a level surface of a single bearing parts or single welded frame allows to reach the one-way optical axes;

- the introduction of the led module cold backing the possibility of independent shutdown and dismantling of one or more sectors, failed;

- the use of aluminum heatsink allows you to put the case voltage Converter;

LEDs 1.1-1.n, where 72<n<90 inclusive, and focusing the Assembly 2.1-2.n, where 72<n<90 inclusive, are optical system modular led spotlight. While focusing the Assembly 2.1-2.n consists of a holder made of polycarbonate and aspherical lenses 3.1-3.n of transparent acrylic glass or UV-stabilized polycarbonate. The use of transparent polycarbonate or acrylic glass in the lens 3.1-3.n allows to increase its strength and reduce light loss in the material. Teams lenses 2.1-2.n can be removed separately from the main Assembly spotlight.

Thus for effective heat removal from the led 1.1-1.n card is used 4 on the basis of aluminium and aluminium radiators 8.1-8.k, where 3<k<4 inclusive.

Assembly of modular led spotlight can be modular and integral.

In the case of whole Assembly alignment of led radiation 1.1-1.n is achieved using a robust aluminium Board 9. In the case of modular Assembly alignment is achieved by combining an aluminum frame 12 and set aluminum radiators 12.1-12k, where 3<k<4 inclusive.

Source 4 power can be executed module or in one Cabinet, but can be managed componentwise 7.1-7.n, where 3<n<6.

Modular led spotlight contains elements 10 adjustment of the optical system in the vertical and horizontal planes, which allows the installation of floodlights so that the light has been directed in the desired direction.

Protection against contact with live parts is ensured by external shell when using the closing plates 5.

Source 4 power is a pulse and may contain or not contain galvanic isolation load from the mains supply.

Source 4 power can have four-wire connection: "plus", "minus", "dim", "bright" or three-wire connection: "minus", "plus", "bright".

Connect the optical part 1.1-1.n with 4 power source can be removable or permanent.

The replacement sectors may occur individually (modular design, uniform design), which is necessary to disconnect the wires from the sector and to dismantle the retaining screws, or sections together with the power supply (modular design), it is necessary to disconnect the mains supply module and remove the screws that secure the module.

The light output from the modular led spotlight is regulated discretely in two positions: "bright" (100%) and "dull" (10%). Adjustment is provided feed control command on the source connector 4 power.

1. Modular led spotlight, containing protective housing, which has led modules, power supply, with each led module contains optical system with led sectors, including LEDs, lenses and heat-conductive circuit Board on the basis of aluminum, while the LEDs installed in focus lenses, characterized in that in a modular led spotlight introduced additional led module cold backup and vertical and horizontal sliders position of the optical system, and led modules are available on the host basis, made in the form a single equal parts or in a welded frame with a metal base with aluminum heatsinks, and voltage Converter is either directly in the case of the radiator, or in a separate case, each sector additionally contains a detachable folding focusing Assembly, individual for each led, closing plates, and focusing assemblies consist of aspherical lenses and the holder on the basis of polycarbonate.

2. Modular led spotlight according to claim 1, characterized in that aspherical lenses are made on the basis of transparent Plexiglas.

3. Modular led spotlight according to claim 1, characterized in that aspherical lenses are made on the basis of transparent UV-stabilized polycarbonate.

4. Modular led spotlight according to claim 1, characterized in that the inverter is configured to step regulation of a light level.

5. Modular led spotlight according to claims 1 or 4, wherein the voltage Converter provides galvanic isolation led from the mains supply.

6. Modular led spotlight according to claim 1, wherein the closing plates made on the basis of the PCB.

7. Modular led spotlight according to claim 1, wherein the closing plates made on the basis of polymeric material.