PL226800B1 - Lighting bulb with LED diodes - Google Patents

Description

Description of the invention

The subject of the invention is a light bulb with LED diodes, intended in particular for street lamps, which can be mounted in any street lamp holder.

A light bulb with LED diodes is from the Polish patent application No. P.404996, in which the cooling air inlet and outlet channels are sealed and connected to each other by a sealed cooling air passage chamber located between the upper end of the heat sink with a blind inner part, the upper plate and side parts printed circuit boards with LEDs protruding above the upper end of the heat sink, tightly connected to the elements extending the heatsink corners. The channels located between the internal part of the heat sink and the plates with projections directing the cooling air from the exhaust channels are blanked. Cooling air outlet openings are located directly under the flange separating the heat sink part with LED PCBs from the heat sink part with plates directing the cooling air to the inlet channels, plates with protrusions directing the cooling air from the outlet channels to the outlet openings. The length of the corner extension members is equal to the length of the projecting parts of the side PCBs with LEDs above the top end of the heat sink.

The LED lamp, known from the Polish patent application No. P.399593, has a mounting base, a diffuser and a light source in the form of at least one LED. The light source is placed in the upper part of the lampshade on the side opposite to the lampshade and is directed towards the socket at any angle, moreover, the light source is attached to the upper part of the lampshade or alternatively the lampshade in the upper part ends with a cap supported on the lampshade walls, in which the source is located. lights. The lamp may also contain a light sensor or a solar cell.

A street lamp with light emitting diodes, known from the Polish patent no. PL216114, includes a housing body with a mounting socket, where a cover is attached to the housing body. Attached to the housing body is at least one light panel containing a printed circuit board with light emitting LEDs embedded in the printed circuit board. The panel faces downwards with the light emitting plane, and a control unit and a power unit are mounted in the housing body, the light panel being attached to the housing body via a heat sink removing heat from the bottom of the light panel. The heat sink is a section of a flat section with a closed cross-section, and the light panel is attached with the upper surface opposite to the lower illuminating surface, to the lower surface of the heat sink. Moreover, the heat sink comprises at its ends on the one hand at least one air inlet and on the other hand at least one air outlet.

A lighting fixture with a device for cooling a bulb, known from European patent No. EP1968101, has a construction unit with a light element and a sheath, which has an inlet and an outlet for a coolant sheath flowing along the inner wall surface to remove heat from the light element, the sheath having a double tube with a sheath. the outer tube and the inner tube, and the inner tube adjoins the light element, and the light element is slidable within the inner tube. A luminaire with a light element housed in a housing that includes a reflector and a light outlet window, and devices for removing heat from the light element, the light element being enclosed in a sheath that has an inlet and an outlet for the coolant envelope flowing at the inner wall surface. The sheath comprises a double tube with an outer tube and an inner tube, the inner tube being adjacent to the light element and the light element being slidable within the inner tube. The light element and the envelope are connected to each other in one construction unit.

A heat spreader, a lamp and a method of producing a heat spreader are known from European Patent No. EP1869365. The heat sink of the at least one light element comprises: at least one light-emitting LED, a heat conducting inner part suitable to house the at least one light element, a heat conducting outer part which surrounds the inner part in at least one plane; characterized in that at least one light element is galvanically shielded from the heat-conducting inner part and in that the outer part has a cylindrical structure of variable diameter and the inner part can be clamped to the outer part. The lamp comprises a lamp base for positioning the lamp and connecting the lamp to a power source, at least one light element with a light-emitting side and a mounting side, and a heat spreader, the mounting side of the at least one light element being connected to the inner part of the heat spreader. The attachment side of at least one light element is connected to the inner part of the heat spreader via a heat-conducting ceramic layer.

An LED light bulb and a LED light strip for emitting light in the angular range of 4π are known from European patent no. EP2535640. The bulb comprises an LED light bulb housing, a main column with an outlet tube, at least one LED light emitting strip with 4 π light emitting LED elements, a driver and an electrical connector, characterized in that the LED light bulb housing is vacuum vacuum closed with the main column to form a vacuum-sealed chamber that is filled with a gas having a low viscosity index and high thermal conductivity, the light-emitting electroluminescent strips attached to the main column being placed in a vacuum-sealed chamber, the LED light-emitting strip connected to the it is electrically with a controller and an electrical connector, and the electrical connector is used to establish an electrical connection with an external power source, which ensures that the electroluminescent strips glow. itching LED light.

The essence of the bulb according to the invention consists in the fact that it has a thread supported by a spacer sleeve and mounted on an insulating sleeve rotatably mounted in the bottom cover of the body, which is connected with the body closed at the top with the upper cover of the body. In addition, it comprises a heat sink closed by a heat sink cover, the heat sink having a cylindrical shape on the bottom with a flat mounting surface with an opening for wires, in which a temperature sensor channel is made, and at least one LED connected to the power and control module is mounted. The heat sink has an axially made inner chamber in which the conductors are arranged.

Preferably, the bulb has a fan integrated with the heat sink, enclosed in a fan cover, the heat sink being seated between the top cover of the body and the fan.

Preferably, the bulb has a fan integrated with the heat sink enclosed in a fan cover, the fan being mounted between the top cover of the body and the heat sink, and between the top cover of the body and the fan there are spacers for the fan.

Preferably, the heat sink is seated between the top cover of the body and the fan.

Preferably, the fan is mounted between the top cover of the body and the heat sink, with fan spacers placed between the first end of the heat sink and the fan, and the other end of the heat sink closed with a heat sink cover.

Preferably, a protective glass is mounted above the LEDs with fastening screws, preferably mounted on distance posts.

It is also advantageous that the bottom of the body, the top of the body, the heat sink, and the fan guard are connected by mounting bolts. Longitudinal mounting bolt holes are provided in the heat sink, which are located between the radially spaced fins of the heat sink, most preferably at the outer periphery of the heat sink.

Preferably, a fastening post is mounted in the top cover of the body, on which the power and control module is fastened with screws.

Preferably, the bottom cover of the body is conical shaped in several stages in the direction from the body to the thread.

Preferably, a stop element is embedded in the bottom cover of the body on the side of the insulating sleeve, and a stop pin is embedded in the insulating sleeve.

Preferably, the power and control module has a control system to which are connected at least one temperature measurement circuit, an external parameter setting circuit and at least one LED lighting supply circuit, each of which is connected to the LED lighting circuit, furthermore a control and LED lighting supply systems are connected to the power supply and stabilization system, to which the fan power supply system is also connected.

Preferably, the control system is equipped with a microcontroller.

Preferably, the temperature measuring system is equipped with a thermistor.

Preferably, the external parameter setting circuit has a communication interface, the two terminals of which are connected to the two terminals of the operating mode switch, the operating mode switch being connected to the microcontroller.

Preferably, the power supply for the LED lighting has a constant current driver connected to the power supply and stabilization circuit and to the control circuit.

PL 226 800 B1

Preferably, the LED illumination system is CoB LEDs or the LED illumination diodes connected in series.

Preferably, the fan power supply system has a fan connector, the first terminal of which is connected to the power supply and stabilization system and simultaneously through the thirteenth resistor and the third signaling LED with the second terminal, moreover, the fan connector is connected to the drain of the MOSFET, the gate of which is connected to the output. microcontroller.

An incandescent lamp is an alternative light source to current sources, especially sodium, metal halide bulbs or luminaires integrated with an LED light source. The bulb is mounted in a standard socket intended for sodium, metal halide and other bulbs, using a thread, in particular Edison's thread specified in the PN-E-02500 standard, in the diameter range from 26 mm E27 to 40 mm E40. In the construction of the bulb, the thread is mounted on a rotating insulating sleeve, which allows, after screwing the bulb into the lighting fixture, for permanent positioning of the bulb and directing the axis of the light beam coming from the LEDs perpendicularly to the illuminated surface, for example the road. In this solution, in the bottom cover of the body there is a stop element that rests against the stop pin, mounted in the insulating sleeve on which the thread is mounted, thanks to which the bulb body can make only one full turn in relation to the thread. Due to the light sources used in the bulb - LED diodes - for which good heat dissipation is important, the bulb is equipped with a finned heat sink, cooling fan, temperature sensors and a controller that manages the above-mentioned cooling system. The heat sink has a hole for wires and an internal compartment for routing wire harnesses. Information on the thermal operating conditions of the diode is provided by temperature sensors mounted in special channels made in the heat sink, which allow the sensors to be placed in the immediate vicinity of the LED. The fan impeller is protected with a fan guard which protects the rotating blades against foreign bodies. The information from the temperature sensors is sent to the control module, which, through the use of a programmable microcontroller managing the entire cooling system, ensures efficient heat management of the bulb and protects the light sources from overheating. The programmable microcontroller used in the control module allows you to manage and control the lighting operation, according to a pre-set program, which can be changed to adjust the operating parameters of the LEDs and the cooling system to the current requirements. In addition, the microcontroller has a dedicated communication connector for external lighting control, taking into account the planning of switching on and off as well as periods of dimming or brightening the lighting. A bulb with an LED light source has many replaceable components, which allows for the recovery of part of the bulb and reduces its impact on the environment at the end of its service life. The construction of the bulb through the use of mounting screws connecting all the elements of the bulb at the same time allows for easy assembly, disassembly, service and replacement of components. The design facilitating assembly and disassembly makes the bulb suitable for multiple repairs.

The subject of the invention in an exemplary embodiment is shown in the drawing, in which fig. 1 shows an axial section of a LED bulb in a front view, fig. 2 - a bulb with LED diodes in a bottom view, fig. 3 - a light bulb in a top view, Fig. 4 - an axial section of a bulb with a fan embedded between the fan guard and heat sink in front view, Fig. 5 - a light bulb with a fan embedded between the fan guard and heat sink in bottom view, Fig. 6 - light bulb with a fan placed between the top cover of the body and a heat sink in a front view, Fig. 7 a bulb with a fan mounted between the top cover and a heat sink in a bottom view, Fig. 8 - a heat sink in a view from the side of the heat sink, Fig. 9 - a cross section of the heat sink, Fig. 10 - a block diagram power and control module, and Figure 11 is a schematic diagram of the power and control module.

P r z k ł a d 1

A light bulb with LED diodes has a thread 1, supported by a spacer sleeve 27 and mounted on an insulating sleeve 17 rotatably mounted in the bottom cover of the body 2, which is connected to the body 3 closed at the top with the upper cover of the body 4. The heat sink 5 has a cylindrical shape from the bottom with a flat mounting surface 24 with an opening 21 for wires. The heat sink 5 is closed by a heat sink cover 16. Two LEDs 7 connected to the power supply and control module 9 and a temperature sensor channel 22 are mounted on the mounting surface 24. Moreover, the heat sink 5 has an axially formed inner chamber 20 in which the conductors are arranged. The bottom cover of the body 2, the top cover of the body 4, the heat sink 5 and the cover of the heat sink 16 are connected by fastening screws 8. In the upper cover of the body 4 there is mounted a fastening post 10, on which the power and control module 9 is fastened with screws 13. in the bottom cover of the body 2, on the side of the insulating sleeve 17, a stop element is seated

18. A stop pin 28 is embedded in the insulating sleeve 17. Above the LEDs 7, glass 14 is fixed with fastening screws, a protective glass 15 is mounted on distance posts 11. In the heat sink 5 there are longitudinal holes 23 for mounting screws 8 connecting the lower body cover 2 , top cover 4, heat sink 5 and heat sink cover 16. Longitudinal holes 23 are located between radially arranged ribs 19 of heat sink 5 on the outer circumference of heat sink 5. Power and control module 9 has a control system UST1, to which two temperature measurement systems UPT1 are connected , UPT2, UZP1 external parameter setting system and two UZL1, UZL2 LED lighting supply systems, each of which is connected to the USL1, USL2 LED lighting system. Moreover, the UST1 control system and the UZL1 and UZL2 LED lighting supply systems are connected to the UZS1 power supply and stabilization system, to which the UZW1 fan power supply system is also connected. The lighting system LEDs USL1, USL2 are LEDs in the CoB system.

P r z k ł a d 2

A light bulb with LED diodes is made as in the first example, with the difference that the heat sink 5 is closed by a fan 12 enclosed in a fan cover 6, the heat sink 5 is seated between the top cover of the body 4 and the fan 12.

P r z k ł a d 3

The LED light bulb is made as in the first example, with the difference that it has a fan 12 mounted between the top cover of the body 4 and the heat sink 5, and between the top cover of the body 4 and the fan 12 there is a fan spacer 25. The control system UST1 is equipped with microcontroller IC1. Temperature measurement systems UPT1, UPT2 are equipped with R7, R8 thermistors. The UZP1 external parameter setting system has a P1 communication port, the two terminals of which are connected to two terminals of the K1 operating mode switch, and the K1 operating mode switch is connected to the IC1 microcontroller. Both power supply systems for lighting LEDs UZL1, UZL2 have a constant current driver IC2, IC3, which is connected with the power supply and stabilization system UZS1 and with the control system UST1. Each of the lighting systems of LEDs USL1, USL2 are lighting LEDs D1, D2, ..., D6 connected in series, the first lighting system of LEDs USL1 has three lighting LEDs D1, D2, D3 and the second lighting system of LEDs USL1 has three lighting LEDs D4, D5, D6. The UZW1 fan power supply system has a P2 fan connector, the first terminal of which is connected to the UZS1 power supply and stabilization system and simultaneously through the thirteenth resistor R13 and the third signaling LED 9 with the second terminal. In this embodiment, a constant supply voltage, preferably from a switching power supply, is applied to the input of the supply and stabilization system UZS1. The seventh diode D7 is connected to the voltage source, through the first resistor R1 signaling the power on. In the UZS1 power supply and stabilization system, the first U1 voltage stabilizer is connected to the power source, the output of which is connected to the UZW1 fan power supply system and the P2 fan connectors located in it and the second U2 voltage stabilizer. The inputs and outputs of these stabilizers filter capacitors from one to four C1, C2, C3, C4. The output of the second stabilizer is connected to the input of the microcontroller IC1, they will be part of the UST1 control system, with the use of an additional 11th capacitor C11 in order to filter the supply voltage of the microcontroller logic. The stabilizer output of the second U2 is also connected to the input of the microcontroller IC1 through the ninth resistor R9. The output of the microcontroller IC1 is connected to the gate of the first MOSFET Q1 through the fourteenth resistor R14. The drain of the MOSFET Q1 is connected to the fan connector P2. The ninth diode is connected between the drain and the power input, signaling the operation of the fan D9 through the thirteenth resistor R13. The source of the first MOSFET Q1 is connected through the fifteenth resistor R15 with the output of the microcontroller IC1 and the output of the first stabilizer U1. The communication output of the microcontroller IC1 is connected to the communication connector P1 via the operating mode switch K1. The control output of the microcontroller IC1 is connected to two power supply systems for the lighting LEDs UZL1, UZL2, and the signal is filtered by the third and fourth resistors R3, R4, respectively. In addition, the eighth LED D8 is connected to the control output of the microcontroller IC1, through the twelfth resistor R12, which signals the operation of the power supply systems for the UZL1 and UZL2 LEDs. Temperature measurement inputs of the first microcontroller are connected to two temperature measurement systems UPT1, UPT2. In the first temperature measurement system UPT1 there is an eighth thermistor R8, which together with the eleventh resistor R11 form a voltage divider system, from which the voltage signal through the tenth con6

The filter denser C10 is sent to the input of the microcontroller IC1. The second temperature measuring system UPT2 is constructed identically to the first UPT1. The first LED lighting power supply UZL1 consists of a first constant current LED lighting driver IC2, the power input of which is connected to a power source using a seventh capacitor C7 to filter the supply voltage. The output of the first LED lighting driver IC2 is connected to the output of the first LED lighting supply circuit (UZL1) through a first choke L1, and the output is filtered by the fifth capacitor C5. The maximum current supplied by the first constant current LED lighting driver IC2 is regulated by a fifth reference resistor R5 connected to the input of the first constant current LED lighting driver IC2, in addition, this input is connected to the output of the tenth Zener diode D10. The output of the first UZL1 LED lighting supply system is connected to the input of the first USL1 LED chip, which consists of a "Chip on Board" LED, consisting of connected LEDs, integrated in one board. The second LED lighting supply system UZL2 is constructed in a manner identical to the first UPT1, and its output is connected to the input of the second LED circuit USL2, constructed in a manner identical to the first LED circuit USL1.

The light source in the bulb are LEDs of the modern CHIP ON BOARD (CoB) type. The thread in the bulb body is rotatably mounted on an insulating sleeve 17, made of an insulator, thanks to which, after screwing it into the holder, it is possible to set the direction of light emission by freely rotating the bulb body in the range from 0 to 360 degrees. The bulb integrates in its design a light source in the form of LED diodes 7, a driver and a power module 9. LED diodes 7 are attached to the mounting surface 24 of the heat sink 5, thanks to which the heat generated by the LED is dissipated during operation. The cross-section of the heat sink 5 is inscribed in a circle, thanks to which the bulb body has a cylindrical form, which minimizes the dimensions of the bulb and ensures compatibility with standard fittings. A fan 12 is attached to the heat sink 5, forcing the air to circulate along its ribs 19. The bulb has 1, 2, 3 or 4 LEDs 7 made in the CHIP ON BOARD technology connected with a wire going outside and inside the heat sink 5, through the hole for wires 21 and the chamber internal 20, with the controller and power module 9. The controller and power module 9 are mounted in the top cover of the body 4 connected with the body 3 closed with the bottom cover 2, tightly sealed in accordance with the IEC 60529 standard, protection factor IP66 or minimum IP42. The controller and the control power module 9 monitors the operating temperature of the LEDs 7 and the entire bulb and controls the fan 12 embedded in the fan spacer 25, and also regulates and stabilizes the current parameters, and controls the cooling system built into the bulb. This system consists of an aluminum heat sink, temperature sensors and fans. The bulb is screwed together with fastening screws 8 passing through the whole body, connecting all structural elements, as well as the structural elements of the bulb can be screwed separately with screws connecting the individual elements.

List of symbols in the drawing:

1. Thread,

2. Lower body cover,

3. Corps,

4. Upper body cover,

5. Heatsink,

6. Fan cover,

7. LED diode,

8. Mounting screw,

9. High-power LED power supply and control module,

10. Pole fixing the power supply module and high-power LED control,

11. Post fastening with glass protection,

12. Fan,

13. Electronics fixing screw,

14. Screw fixing the LED diode and the protective glass,

15. Protective glass,

16. Heatsink cover,

PL 226 800 B1

17. Insulating sleeve,

18. Stop element,

19. Heatsink rib,

20. Inner chamber,

21. Hole for wires,

22. Temperature sensor channel,

23. Hole for the mounting bolt,

24. LED mounting surface,

25. Fan distance,

26. Air inlet opening,

27. Spacer sleeve,

28. The stop pin,

UZS1 - Controller power supply and voltage stabilization,

UZW1 - Fan power supply system,

UZP1 - External parameter setting system,

UPT2 UZL2 USL2 UPT1 UZL1 USL1 UST1 IC1 IC2, IC3 U1, U2 K1 P1 P2 C1 to C11 Temperature measurement system,

LED lighting power supply system,

LED lighting system,

Control system,

Microcontroller,

Constant current driver for LED lighting, Voltage stabilizers,

Mode switch,

Communication connector,

Fan connector,

Capacitors,

R1 to R6 and R9 to R15 - Resistors,

R7, R8 - Thermistors,

D7 - Signaling LED for connecting the supply voltage,

D8 - Signaling LED diode operation of lighting diodes,

D9 - Signaling LED diode fan operation,

D10, D11 - Zener diodes,

L1, L2 - Chokes,

D1 to D6 - Lighting LEDs in a CoB configuration or single lighting LEDs connected in series,

Q1 - Half MOSFET transistor.

Claims (17)

Patent claims 1. A light bulb with LED diodes, characterized in that it has a thread (1) supported by a spacer sleeve (27) and mounted on an insulating sleeve (17) rotatably mounted in the bottom cover of the body (2), which is connected to the body (3) closed from top cover of the body (4), and also includes a heat sink (5) closed with a heat sink cover (16), the heat sink (5) having a cylindrical shape from the bottom with a flat mounting surface (24) with an opening (21) for wires, in which there is a temperature sensor channel (22), and at least one LED (7) connected to the power and control module (9) is mounted, and the heat sink (5) has an axially formed inner chamber (20) in which the conductors are arranged. 2. A light bulb as claimed in claim 1; A device as claimed in claim 1, characterized in that it has a fan (12) integrated with the radiator (5) enclosed in a fan casing (6), the radiator (5) being seated between the top cover of the body (4) and the fan (12). 3. A light bulb as claimed in claim 1; A device as claimed in claim 1, characterized in that it has a fan (12) integrated with the heat sink (5) enclosed by a fan spacer (25), the fan (12) being seated between the top cover of the body (4) and the heat sink (5). 4. A light bulb as claimed in claim 1; A device as claimed in claim 1, characterized in that the bottom cover of the body (2) is conically shaped with multiple stages in the direction from the body (2) to the thread (1). PL 226 800 B1 5. A light bulb as claimed in claim 1; A protective glass (15), preferably mounted on distance posts (11), is mounted above the LEDs (7) by means of fastening screws of the glass (14). 6. A light bulb as claimed in claim 1; The device according to claim 2, characterized in that the bottom cover of the body (2), the top cover of the body (4), the heat sink (5) and the fan cover (6) are connected by fastening screws (8). 7. A light bulb as claimed in claim 1; 5. The heat sink (5), characterized in that longitudinal holes (23) for fastening bolts (8) are provided in the heat sink (5), which are located between radially spaced ribs (19) of the heat sink (5), preferably on the outer circumference of the heat sink (5). 8. A light bulb as claimed in claim 1; A mounting post (10) is mounted in the top cover of the body (4), on which the power and control module (9) is fastened with screws (13). 9. A light bulb as claimed in claim 1; A stopper (18) is mounted in the bottom cover of the body (2) on the side of the insulating sleeve (17), and a stop pin (28) is mounted in the insulating sleeve (17). 10. A light bulb as claimed in claim 1; Device according to claim 1, characterized in that the power and control module (9) has a control system (UST1) to which at least one temperature measurement system (UPT1, UPT2, ..., UPTn) is connected, an external parameter setting system (UZP1) and at least one LED lighting power supply system (UZL1, UZL2, ..., UZTn), each of which is connected to the LED lighting system (USL1, USL2, ..., USLn), moreover the control system (UST1) and power supply for the lighting LEDs (UZL1, UZL2, ..., UZTn) are connected to the power supply and stabilization system (UZS1), to which the fan power supply system (UZW1) is also connected. 11. A light bulb as claimed in claim 1; 10. The device of claim 10, characterized in that the control circuit (UST1) is equipped with a microcontroller (IC1). 12. A light bulb as claimed in claim 1; The method of claim 10, characterized in that the temperature measuring circuit (UPT1, UPT2, ..., UPTn) is provided with a thermistor (R7, R8). 13. A light bulb as claimed in claim 1; 10, characterized in that the external parameter setting system (UZP1) has a communication port (P1), the two terminals of which are connected to two terminals of the operating mode switch (K1), while the operating mode switch (K1) is connected to the microcontroller (IC1) . 14. A light bulb as claimed in claim 1; 10, characterized in that the power supply for the LED lighting (UZL1, UZL2, ..., UZLn) has a constant current driver (IC2, IC3, ..., ICn) connected to the power supply and stabilization system (UZS1) and to the control system ( UST1). 15. A light bulb as claimed in claim 1; The method of claim 10, characterized in that the LED illumination array (USL1, USL2, ..., USLn) are CoB array LEDs. 16. A light bulb as claimed in claim 1; The method of claim 9, characterized in that the LED lighting system (USL1, USL2, ..., USLn) are lighting LEDs (D1, D2, ..., D6) connected in series. 17. A light bulb as claimed in claim 1; 10, characterized in that the fan power supply (UZW1) has a fan connector (P2), the first terminal of which is connected to the power supply and stabilization circuit (UZS1) and simultaneously through the thirteenth resistor (R13) and the third signaling LED (D9) with the second terminal, and the fan connector (P2) is connected to the drain of the MOSFET (Q1), the gate of which is connected to the output of the microcontroller (IC1).