Down lamp dimming circuit structure, down lamp dimming control device and down lamp

Abstract

The utility model relates to a down lamp dimming circuit structure, a down lamp dimming control device and a down lamp, the down lamp dimming circuit structure comprises a dimming circuit, a decoding circuit, a power supply circuit and a three-color lamp strip, and the dimming circuit is connected with the cathode of the three-color lamp strip; the positive electrode of the three-color lamp strip is connected with the power supply circuit; the dimming circuit is also connected with the decoding circuit and the power supply circuit; the decoding circuit is also connected with the power supply circuit; the three-color lamp strip comprises an orange lamp strip, a neutral white lamp strip and a blue-white lamp strip; the orange lamp strip, the neutral white lamp strip and the blue-white lamp strip have the same structure; the orange lamp strip, the neutral white lamp strip and the blue-white lamp strip respectively comprise N LED lamp beads which are connected in series; three-color light distribution of orange red, yellow green and blue white is adopted, the adjustable light color temperature range is expanded to 1800K-12000K, a DMX512 communication protocol is added, a down lamp can be connected to a light modulation circuit and a decoding circuit, and the light modulation circuit is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the field of lamps and relates to a downlight dimming circuit structure. Background Art

[0002] A downlight is a lighting fixture that is embedded in the ceiling and radiates light downward.

[0003] This kind of hidden lamp embedded in the ceiling projects all light downwards, which is a direct light distribution. Different reflectors, lenses, blinds, and bulbs can be used to achieve different lighting effects. Downlights do not take up space and can add a soft atmosphere to the space. If you want to create a warm feeling, you can try to install multiple downlights to reduce the sense of oppression in the space. It is generally used more in hotels, homes, and cafes.

[0004] 1. The color temperature range of natural light: 1800K (sunrise) - morning and afternoon (5000K) - 12000K (noon);

[0005] 2. For general RGB downlights, the dimming range is between 3000K and 6500K. The main wavelength range of RGB is: R: 620-640nm, G: 510-540nm, B: 450-480nm. The color temperature of white light produced by mixing these three colors is generally between 3000K and 6500K.

[0006] 3. The conventional three-color mixing circuit structure cannot produce natural light with low or high color temperature. Utility Model Content

[0007] In order to solve the above problems, the technical solution adopted by the utility model is: a downlight dimming circuit structure, comprising:

[0008] Dimming circuit, decoding circuit, power supply circuit and three-color light strip

[0009] The dimming circuit is connected to the negative electrode of the three-color light strip;

[0010] The positive pole of the three-color light strip is connected to the power supply circuit;

[0011] The dimming circuit is also connected to the decoding circuit and the power supply circuit;

[0012] The decoding circuit is also connected to the power supply circuit;

[0013] The three-color light strip includes an orange-red light strip, a yellow-green light strip, and a blue-white light strip;

[0014] The orange-red light strip, yellow-green light strip and blue-white light strip have the same structure;

[0015] The orange-red light strip, the yellow-green light strip and the blue-white light strip respectively include N LED lamp beads connected in series.

[0016] Further: the dimming circuit adopts a PWM dimming circuit, the chip model used in the PWM dimming circuit is MB16662GD, the CSP pin of MB16662GD is connected to one end of the resistor R17, the GNDP pin and the GND pin of MB16662GD are connected to the other end of the resistor R17, the COMP pin of MB16662GD is connected to one end of the capacitor C9, the FS pin of MB16662GD is connected to one end of the resistor R24, and the capacitor C9 is connected to the other end of the resistor R17. One end of the inductor L2 and the other end of the resistor R24 ​​are connected to the ground wire; the LX pin of MB16662GD is connected to one end of the inductor and the positive electrode of the diode, and the negative electrode of the diode is connected to one end of the parallel resistor R28 and one end of the resistor R29; the other end of the resistor R28 and the other end of the resistor R29 are connected to the anode of the LED lamp bead 1, and the LED lamp bead 1, LED lamp bead 2, LED lamp bead 3, LED lamp bead 4, LED lamp bead 5 and LED lamp bead 6 are connected in series in sequence; the other end of the inductor L2 is connected to the cathode of the LED lamp bead 1.

[0017] Furthermore: the decoding circuit adopts a DMX512 decoding circuit, and the chip model adopted by the DMX512 decoding circuit is STM32F103C6T6.

[0018] Furthermore: the specifications of the LED lamp beads 1, 2, 3, 4, 5 and 6 are the same, and the specification of the LED lamp bead 1 is SMD5054 3in1.

[0019] Furthermore: the color temperature of the orange-red light strip is 1400K, the color temperature of the yellow-green light strip is 4000K, and the color temperature of the blue-white light strip is 26000K.

[0020] A downlight dimming control device comprises a downlight housing and a dimming switch arranged on the downlight housing. The downlight housing is provided with the downlight dimming circuit structure.

[0021] A downlight comprises the downlight dimming circuit device as described in any one of the items.

[0022] The utility model provides a downlight dimming circuit structure, which has the following advantages: adopting a three-color light distribution of orange-red, yellow-green and blue-white, expanding the dimmable color temperature range to 1800K--12000K, and adding a DMX512 communication protocol, so that the downlight can be connected to the dimming circuit and the decoding circuit, and the dimming circuit structure is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a module diagram of the dimming circuit structure of a downlight;

[0025] Figure 2 It is a control circuit diagram of a downlight dimming circuit structure;

[0026] Figure 3 It is a PWM dimming circuit structure;

[0027] Figure 4 This is the structural diagram of the DMX512 decoding circuit;

[0028] Figure 5 (a) is a diagram of power supply circuit structure I, and (b) is a diagram of power supply circuit structure II;

[0029] Figure 6 is the circuit diagram of the parameter storage module;

[0030] Figure 7 It is the circuit diagram of the three-color light strip LED light board. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0036] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0037] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0038] Figure 1 It is a module diagram of the structure of a downlight dimming circuit;

[0039] A downlight dimming circuit structure, comprising:

[0040] The dimming circuit, decoding circuit, power supply circuit and three-color light strip;

[0041] The dimming circuit is connected to the negative electrode of the three-color light strip;

[0042] The positive pole of the three-color light strip is connected to the power supply circuit;

[0043] The dimming circuit is also connected to the decoding circuit and the power supply circuit;

[0044] The decoding circuit is also connected to the power supply circuit;

[0045] The three-color light strip includes an orange-red light strip, a yellow-green light strip, and a blue-white light strip;

[0046] The orange-red light strip, the yellow-green light strip and the blue-white light strip have the same structure;

[0047] The orange-red light strip, the yellow-green light strip and the blue-white light strip respectively include N LED lamp beads connected in series.

[0048] Figure 2 It is a control circuit diagram of a downlight dimming circuit structure;

[0049] Figure 3It is a PWM dimming circuit structure;

[0050] Further: the dimming circuit adopts a PWM dimming circuit, the PWM dimming circuit, the chip model used in the PWM dimming circuit is MB16662GD, the CSP pin of MB16662GD is connected to one end of the resistor R17, the GNDP pin and the GND pin of MB16662GD are connected to the other end of the resistor R17, the COMP of the MB16662GD is connected to one end of the capacitor C9, and the FS pin of the MB16662GD is connected to one end of the resistor R24, The other end of capacitor C9 and the other end of resistor R24 ​​are connected to the ground wire; the LX pin of MB16662GD is connected to one end of the inductor and the positive electrode of the diode, and the negative electrode of the diode is connected to one end of the parallel resistor R28 and one end of the resistor R29; the other end of resistor R28 and the other end of resistor R29 are connected to the anode of LED lamp bead 1, and LED lamp bead 1, LED lamp bead 2, LED lamp bead 3, LED lamp bead 4, LED lamp bead 5 and LED lamp bead 6 are connected in series in sequence; the other end of inductor L2 is connected to the cathode of LED lamp bead 1.

[0051] Figure 4 This is the structural diagram of the DMX512 decoding circuit;

[0052] Further: the decoding circuit adopts a DMX512 decoding circuit, the DMX512 decoding circuit; the chip model used by the DMX512 decoding circuit is STM32F103C6T6, and the OSC_IN / PD0 pin and OSC_OUT / PD1 pin of the STM32F103C6T6 are connected to both ends of the crystal oscillator XI and capacitors C7 and C8.

[0053] Figure 5 (a) is a diagram of power supply circuit structure I, and (b) is a diagram of power supply circuit structure II;

[0054] The power circuit includes a power circuit structure I and a power circuit structure II, wherein the power circuit structure I is connected to the power circuit structure II;

[0055] Figure 6 is the circuit diagram of the parameter storage module;

[0056] The downlight dimming circuit structure also includes a parameter storage module, the chip model used in the parameter storage module is 24LC02, the WP pin of the 24LC02 is connected to the resistor R44, the SCL of the 24LC02 is connected to one end of the resistor R41, the SDA pin is connected to one end of the resistor R40, and the other end of the resistor R41 and the other end of the resistor R40 are connected to a 3.3V power supply;

[0057] Figure 7It is the circuit diagram of the three-color light strip LED light board.

[0058] Furthermore: the number of N is ≥6.

[0059] Furthermore: the specifications of the LED lamp beads 1, 2, 3, 4, 5 and 6 are the same, and the specification of the LED lamp bead 1 is SMD5054 3in1.

[0060] Orange-red light strips, yellow-green light strips, and blue-white light strips, these three orange-red light strips, yellow-green light strips, and blue-white light strips replace the RGB colors with three color temperatures of LEDs: R is replaced by orange-red with a color temperature of 1400K, G is replaced by neutral white with a color temperature of 4000K, and B is replaced by blue-white with a color temperature of 26000K.

[0061] By mixing the three light colors in the following proportions, we can get a natural light color with an ultra-wide range of 1800K--12000K.

[0062] CCT / K R-1400K D-4000K W-26000K 1800 248 54 7 2000 225 74 12 2400 184 102 24 3000 141 121 47 3500 117 125 68 4000 99 121 89 4500 87 113 109 5000 79 104 127 5700 70 89 150 6500 65 72 173 7000 63 62 185 8000 60 44 205 9000 59 29 221 10000 59 17 234 11000 59 6 244 12000 53 2 255

[0063] The light intensity of three color LEDs is controlled through three-channel PWM control, and the remote control protocol uses the DMX512 control protocol, so that this lamp can be connected to the DMX512 control system, and the corresponding light color control can be performed through the remote controller.

[0064] A downlight dimming control device comprises a downlight housing and a dimming switch arranged on the downlight housing. The downlight housing is provided with a downlight dimming circuit structure as described above.

[0065] A downlight, comprising a power supply compartment, a wiring cover, a dimming circuit, a wiring terminal, a spring seat, a fixing spring clip, a heat dissipation lamp cup, a lamp cup panel, an LED aluminum substrate and a PC panel;

[0066] The power supply compartment is movably connected to the wiring cover plate;

[0067] The control circuit board is fixedly connected to the wiring terminal;

[0068] The control circuit board is fixed in the power supply compartment through the connection terminals; the power supply compartment is provided with a power supply;

[0069] The heat dissipation lamp cup comprises a heat dissipation lamp cup body and a lamp cup panel; the heat dissipation lamp cup body and the lamp cup panel are integrally connected;

[0070] The edge of the heat dissipation lamp cup body is provided with a spring seat and a fixing spring clip;

[0071] A fixing spring clip is arranged on the spring seat; the fixing spring clip is used to fix the heat dissipation lamp cup, which is convenient for installation.

[0072] A light-emitting component is arranged inside the heat dissipation lamp cup; the light-emitting component is electrically connected to the dimming circuit;

[0073] The panel is mounted on the open cup mouth of the heat dissipation lamp cup.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A downlight dimming circuit structure, characterized in that: include: Dimming circuit, decoding circuit, power supply circuit and three-color light strip The dimming circuit is connected to the negative electrode of the three-color light strip; The positive electrode of the three-color light strip is connected to the power supply circuit; The dimming circuit is also connected to the decoding circuit and the power supply circuit; The decoding circuit is also connected to the power supply circuit; The three-color light strip includes an orange-red light strip, a yellow-green light strip, and a blue-white light strip; The orange-red light strip, yellow-green light strip and blue-white light strip have the same structure; The orange-red light strip, the yellow-green light strip and the blue-white light strip respectively include N LED lamp beads connected in series.

2. The downlight dimming circuit structure according to claim 1, characterized in that: The dimming circuit adopts a PWM dimming circuit. The chip model used in the PWM dimming circuit is MB16662GD. The CSP pin of MB16662GD is connected to one end of the resistor R17. The GNDP pin and the GND pin of MB16662GD are connected to the other end of the resistor R17. The COMP pin of MB16662GD is connected to one end of the capacitor C9. The FS pin of MB16662GD is connected to one end of the resistor R24. The other end of the capacitor C9, The other end of resistor R24 ​​is connected to the ground wire; the LX pin of MB16662GD is connected to one end of the inductor and the positive electrode of the diode, and the negative electrode of the diode is connected to one end of the parallel resistor R28 and one end of the resistor R29; the other end of resistor R28 and the other end of resistor R29 are connected to the anode of LED lamp bead 1, and LED lamp bead 1, LED lamp bead 2, LED lamp bead 3, LED lamp bead 4, LED lamp bead 5 and LED lamp bead 6 are connected in series in sequence; the other end of inductor L2 is connected to the cathode of LED lamp bead 1.

3. The downlight dimming circuit structure according to claim 1, characterized in that: The decoding circuit adopts a DMX512 decoding circuit, and the chip model adopted by the DMX512 decoding circuit is STM32F103C6T6.

4. The downlight dimming circuit structure according to claim 1, characterized in that: The specifications of the LED lamp beads 1, 2, 3, 4, 5 and 6 are the same, and the specification of the LED lamp bead 1 is SMD5054 3in1.

5. The downlight dimming circuit structure according to claim 1, characterized in that: The color temperature of the orange-red light strip is 1400K, the color temperature of the yellow-green light strip is 4000K, and the color temperature of the blue-white light strip is 26000K.

6. A downlight dimming control device, characterized in that: It comprises a downlight housing and a dimming switch arranged on the downlight housing, wherein a downlight dimming circuit structure as described in any one of claims 1 to 5 is arranged in the downlight housing.

7. A downlight, characterized in that: It comprises the downlight dimming control device as described in claim 6.

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