CN115789549A - Upper and lower partition variable luminous emergency lamp - Google Patents

Abstract

A variable luminous emergency lamp of upper and lower subregion, its LED power of the atmosphere lighting area accounts for 10% -20% of the power of the light source board, LED power of the main lighting area accounts for 80% -90% of the power of the light source board; the LEDs in the atmosphere lighting area emit light directly downwards, and the luminous flux is LED out through the light guide plate; the back surface and the inner ring side surface of the light guide plate are processed by adopting light-tight luminescent paper, light-tight silk-screen printing or surface deep atomization, and the light guide direction is designed through optical dots; the center of the light guide plate is provided with a main lighting through hole; the main light source constant current driving circuit performs constant current driving on the LED of the main lighting area to realize lighting, lighting-out and brightness adjustment of the main lighting area; the atmosphere light source constant current driving circuit performs constant current driving on the LED of the atmosphere lighting area so as to realize lighting, lighting-out and brightness adjustment of the atmosphere lighting area. The invention realizes the upper and lower subareas of the emergency ceiling lamp to emit light; and the cost is low, and the use flexibility of the lamp is improved.

Description

Upper and lower partition variable luminous emergency lamp

Technical Field

The invention belongs to the technical field of lamps, and particularly relates to an emergency lamp capable of emitting light in a vertically-partitioned and variable mode.

Background

At present, ceiling lamps in the industry mainly adopt single main illumination (light source directly emits light) or single atmosphere illumination (light source side emits light), the main illumination and the atmosphere illumination cannot be combined or independently controlled, and the light emitting and beautifying effects are poor. In addition, in the emergency function, the emergency ceiling lamp has a single function, has great limitation and cannot meet the application requirement of the existing market.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the up-down partition variable luminous emergency lamp, which realizes the complementary combination of main illumination and atmosphere illumination, performs function expansion design and meets the diversified demands of the market.

The technical scheme for realizing the purpose is as follows: an up-down partition variable light-emitting emergency lamp comprises a light source board and a circuit board; the light source board comprises an atmosphere lighting area and a main lighting area; the LED power proportion of the atmosphere lighting area is 10% -20% of the power of the light source board, and the LED power proportion of the main lighting area is 80% -90% of the power of the light source board;

the LEDs in the atmosphere lighting area emit light directly downwards, and the luminous flux is LED out through the light guide plate; the back surface and the inner ring side surface of the light guide plate are processed by adopting light-tight luminescent paper, light-tight silk-screen printing or surface deep atomization, and the light guide direction is designed through optical dots; a main lighting through hole is formed in the center of the light guide plate;

the LEDs in the main lighting area are uniformly distributed, the main lighting area is provided with a diffusion mask, and the diffusion mask is connected with the main lighting through holes;

the circuit board comprises a master control MCU, a main light source constant current driving circuit and an atmosphere light source constant current driving circuit; the main light source constant current driving circuit is electrically connected with the main control MCU, and is also electrically connected with the LEDs in the main lighting area, and the main light source constant current driving circuit is used for carrying out constant current driving on the LEDs in the main lighting area so as to realize the lighting, lighting-out and brightness adjustment of the main lighting area;

the atmosphere light source constant current drive circuit is electrically connected with the master control MCU, the atmosphere light source constant current drive circuit is also electrically connected with the LEDs of the atmosphere lighting area, and the atmosphere light source constant current drive circuit is used for carrying out constant current drive on the LEDs of the atmosphere lighting area so as to realize lighting, lighting-out and brightness adjustment of the atmosphere lighting area.

As a preferable scheme of the up-and-down subarea variable light-emitting emergency lamp, LED light rays in an atmosphere illumination area reach the exposed part of the light guide plate through curved surface conduction, after reflection and refraction of the edge of the light guide plate, the light guide plate has light ray guide through processing of carving type or printing type mesh points and mesh lines, light up and down light emission of the light guide plate is controlled, and the light-emitting angle, the light-emitting brightness and the light-emitting effect are controlled through design of the mesh points or the mesh lines of the light guide plate.

As a preferable scheme of the up-down subarea variable light-emitting emergency lamp, the circuit board further comprises an anti-surge interference circuit, and the anti-surge interference circuit is used for electromagnetic pulse amplitude limiting on the bus and short-circuiting interference clutter by a bypass coupling;

the anti-surge interference circuit is electrically connected with the main control MCU and comprises a current fuse F1, a diode D6, a capacitor C1 and a capacitor C10, the capacitor C1 and the capacitor C10 are connected in series and then connected with the diode D6 in parallel, the current fuse F1 is electrically connected with the diode D6, and the current fuse F1 is also electrically connected with the capacitor C1.

As a preferred scheme of the up-down partition variable light-emitting emergency lamp, the circuit board further comprises a data bus polarity protection circuit, and the data bus polarity protection circuit is electrically connected with the master control MCU; the data bus polarity protection circuit is used for ensuring that the polarity of a power supply of a post-stage circuit after the input end of the lamp is in blind connection is correct.

As a preferred scheme of the up-down partition variable light-emitting emergency lamp, the circuit board further comprises a data bus communication signal detection circuit, and the data bus communication signal detection circuit is electrically connected with the master control MCU; the data bus communication signal detection circuit is used for sampling and collecting signals for the main control MCU through the detection circuit.

As a preferable scheme of the up-down partition variable light-emitting emergency lamp, the circuit board further comprises an external module input circuit, the external module input circuit is electrically connected with the main control MCU, and the external module input circuit is used for communicating with external equipment.

As a preferred scheme of the up-down partition variable light-emitting emergency lamp, the circuit board further comprises a 5V auxiliary power supply generating circuit, the 5V auxiliary power supply generating circuit is electrically connected with the main light source constant current driving circuit, the 5V auxiliary power supply generating circuit is electrically connected with the atmosphere light source constant current driving circuit, and the 5V auxiliary power supply generating circuit is also electrically connected with the data bus polarity protection circuit;

the 5V auxiliary power supply generation circuit is used for realizing a 5V voltage source for a power supply subjected to data bus filtering through a constant voltage reduction circuit, and providing a stable voltage source for a rear-stage battery charging and external control module.

As a preferred scheme of the up-down partition variable light-emitting emergency lamp, the circuit board further comprises a standby battery constant-current charging power supply circuit, and the standby battery constant-current charging power supply circuit charges the standby battery by adopting a linear constant-current source circuit and is controlled by the electric quantity and the circuit of the main control MCU.

As the preferred scheme of the variable luminous emergency lamp of upper and lower subregion, the circuit board still includes group battery nondestructive management system detection circuitry, group battery nondestructive management system detection circuitry is used for the group battery electric quantity to detect, utilizes master control MCU's hiccup mode test battery's electric quantity.

As a preferable scheme of the up-down partition variable light-emitting emergency lamp, the circuit board further comprises a detection circuit of a battery pack emergency boosting management system, and the detection circuit of the battery pack emergency boosting management system is used for detecting the voltage of a battery.

The invention has the advantages that the light source board and the circuit board are arranged; the light source board comprises an atmosphere lighting area and a main lighting area; the LED power ratio of the atmosphere lighting area is 10% -20% of the power of the light source plate, and the LED power ratio of the main lighting area is 80% -90% of the power of the light source plate; the LEDs in the atmosphere lighting area emit light directly downwards, and the luminous flux is LED out through the light guide plate; the back surface and the inner ring side surface of the light guide plate are processed by adopting light-tight luminescent paper, light-tight silk-screen printing or surface deep atomization, and the light guide direction is designed through optical dots; the center of the light guide plate is provided with a main lighting through hole; LEDs in the main lighting area are uniformly distributed, the main lighting area is provided with a diffusion mask, and the diffusion mask is connected with the main lighting through holes; the circuit board comprises a master control MCU, a main light source constant current driving circuit and an atmosphere light source constant current driving circuit; the main light source constant current driving circuit is electrically connected with the main control MCU, and is also electrically connected with the LED of the main lighting area; the atmosphere light source constant current driving circuit is electrically connected with the master control MCU, the atmosphere light source constant current driving circuit is also electrically connected with the LEDs of the atmosphere lighting area, and the atmosphere light source constant current driving circuit is used for carrying out constant current driving on the LEDs of the atmosphere lighting area so as to realize the lighting, lighting-out and brightness adjustment of the atmosphere lighting area. The emergency ceiling lamp realizes the illumination of the upper and lower subareas of the emergency ceiling lamp, and each subarea independently lights up, turns off, adjusts the light and adjusts the power; the ceiling lamp has the advantages that the cost is low, the application effect of the ceiling lamp is improved, the application range is expanded, diversified requirements of customers are met, and the use flexibility of the lamp is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, the proportions, the sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical essence, and any modifications of the structures, changes of the proportion relation, or adjustments of the sizes, should still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is an overall and exploded schematic view of a variable-lighting emergency lamp with upper and lower partitions according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a circuit frame of a variable-lighting emergency lamp with upper and lower partitions according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an anti-surge interference circuit of an up-and-down partitioned variable luminescence emergency lamp, a data bus polarity protection circuit, a data bus communication signal detection circuit, a main light source constant current driving circuit and an atmosphere light source constant current driving circuit provided in the embodiment of the present invention;

fig. 4 is a schematic diagram of an input circuit of an external module of the variable-lighting emergency lamp with upper and lower partitions according to the embodiment of the present invention;

fig. 5 is a schematic diagram of a 5V auxiliary power generation circuit of the up-down partition variable light-emitting emergency lamp provided in the embodiment of the present invention;

fig. 6 is a schematic diagram of a standby battery constant-current charging power supply circuit, a battery pack nondestructive management system detection circuit, and a battery pack emergency boost management system detection circuit of the up-down partition variable light-emitting emergency lamp provided in the embodiment of the present invention;

fig. 7 is a circuit diagram of a master control MCU of the up-down partition variable light-emitting emergency lamp provided in the embodiment of the present invention;

fig. 8 is a circuit diagram of a chip U3 in the up-down partition variable light-emitting emergency lamp provided in the embodiment of the present invention;

fig. 9 is a diagram of the light-emitting effect of the up-down partition variable light-emitting emergency lamp provided in the embodiment of the present invention.

In the figure, 1, a light source plate; 2. a circuit board; 3. an ambient lighting area; 4. a primary illumination area; 5. a light guide plate; 6. a diffusion mask; 7. a main control MCU; 8. a main light source constant current driving circuit; 9. an atmosphere light source constant current driving circuit; 10. an anti-surge interference circuit; 11. a data bus polarity protection circuit; 12. a data bus communication signal detection circuit; 13. an external module input circuit; 14. a 5V auxiliary power supply generation circuit; 15. a standby battery constant current charging power supply circuit; 16. a battery pack nondestructive management system detection circuit; 17. emergent management system detection circuitry that steps up of group battery.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, an embodiment of the invention provides an up-down partition variable light-emitting emergency lamp, which includes a light source board 1 and a circuit board 2; the light source board 1 comprises an ambience lighting area 3 and a main lighting area 4; the LED power of the atmosphere lighting area 3 accounts for 10% -20% of the power of the light source plate 1, and the LED power of the main lighting area 4 accounts for 80% -90% of the power of the light source plate 1;

wherein, the LEDs in the atmosphere lighting area 3 emit light directly downwards, and the luminous flux is LED out through the light guide plate 5; the back surface and the inner ring side surface of the light guide plate 5 are processed by adopting light-tight luminescent paper, light-tight silk-screen printing or surface deep atomization, and the light guide direction is designed through optical dots; a main lighting through hole is formed in the center of the light guide plate 5;

the LEDs of the main illumination area 4 are uniformly distributed, the main illumination area 4 is provided with a diffusion mask 6, and the diffusion mask 6 is connected with the main illumination through holes;

the circuit board 2 comprises a master control MCU7, a main light source constant current drive circuit 8 and an atmosphere light source constant current drive circuit 9; the main light source constant current driving circuit 8 is electrically connected with the main control MCU7, the main light source constant current driving circuit 8 is also electrically connected with the LED of the main lighting area 4, and the main light source constant current driving circuit 8 is used for carrying out constant current driving on the LED of the main lighting area 4 so as to realize the lighting, lighting-out and brightness adjustment of the main lighting area 4;

the atmosphere light source constant current driving circuit 9 is electrically connected with the master control MCU7, the atmosphere light source constant current driving circuit 9 is also electrically connected with the LEDs of the atmosphere lighting area 3, and the atmosphere light source constant current driving circuit 9 is used for carrying out constant current driving on the LEDs of the atmosphere lighting area 3 so as to realize lighting, lighting-off and brightness adjustment of the atmosphere lighting area 3.

In this embodiment, two-way regional design is performed on the LEDs of the light source board 1, the outermost circle of LEDs is used as the light source of the atmosphere lighting area 3, the other LEDs of the inner circle are used as the light source of the main lighting area 4, through optimization calculation, the LED power proportion of the atmosphere lighting area 3 is between 10% and 20% of the power of the light source board 1, the LED power proportion of the main lighting area 4 is between 80% and 90% of the power of the light source board 1, and the LED power of the main lighting area 4 and the LED power of the atmosphere lighting area 3 pass through the PWM program logic of the main control MCU7, so as to meet the power proportion distribution requirement, thereby ensuring high lighting efficiency of the lamp and diversified application requirements.

In this embodiment, the LED light in the atmosphere illumination area 3 reaches the light guide plate 5 at the exposed portion through curved surface conduction, and after reflection and refraction at the edge of the light guide plate 5, the light guide plate 5 has light guiding effect through processing of engraved or printed dots and mesh wires, so as to control light to emit light up and down, and control the light emitting angle, light emitting brightness and light emitting effect through design of the dots or mesh wires of the light guide plate 5.

Specifically, the LEDs in the atmosphere lighting area 3 emit light directly downwards, and the light flux is guided out through the integrally injection-molded light guide plate 5, so that the LED can be used for environmental lighting and beautifying decoration. The back and the inner ring side of the light guide plate 5 directly opposite to the LED light source of the atmosphere illumination area 3 are processed by light-tight luminescent paper (double-sided white) or light-tight silk-screen printing or surface deep atomization, so that light can only be transmitted inside the light guide plate 5, the light guide direction is designed through optical dots, meanwhile, the edge of the light guide plate 5 is subjected to deep frosting treatment, light emitted by the LED can be effectively utilized, and the light can be more uniform and more guided by reflection and refraction.

Wherein, light reaches the light guide plate 5 who exposes the part through the curved surface conduction, through the reflection at light guide plate 5 edge, after the refraction, carry out processing such as site (see fig. 8 luminous effect picture) or net twine through carving formula or printing formula again and make light guide plate 5 have the light direction, control light shines from top to bottom, and design control luminous angle through the site or the net twine of light guide plate 5, luminous luminance, luminous effect, thereby realize the upper and lower luminescence of optical plate, the effect in a poor light of lamps and lanterns, including the show of product LOGO, the bright eye is eye-catching more.

The main illumination area 4 is uniformly distributed through the inner ring LEDs, the high-light-transmittance (more than 85%) milky PC diffusion mask 6 with a diffusion effect is added, so that the uniform light emitting surface can emit light, the lighting effect is higher than that of other ceiling lamps in the industry, and the functions of lighting, lamp extinguishing, dimming, power regulation and the like of the main illumination area 4 can be realized through the main light source constant-current driving circuit 8, so that the higher energy-saving effect of the lamp is realized.

Referring to fig. 3, in this embodiment, the circuit board 2 further includes an anti-surge interference circuit 10, where the anti-surge interference circuit 10 is used for electromagnetic pulse amplitude limiting and bypass coupling short-circuiting interference clutter on the bus; the anti-surge interference circuit 10 is electrically connected with the main control MCU7, the anti-surge interference circuit 10 comprises a current fuse F1, a diode D6, a capacitor C1 and a capacitor C10, the capacitor C1 and the capacitor C10 are connected in series and then connected in parallel with the diode D6, the current fuse F1 is electrically connected with the diode D6, and the current fuse F1 is also electrically connected with the capacitor C1.

Specifically, because the centralized emergency control lamp is a complete communication and control integrated lamp, in order to ensure that the power supply signal of the data bus does not interfere with the operation of the lamp and that the lamp does not generate an interference source to transmit to the data bus during operation, the surge interference resistant circuit 10 is adopted, so that the electromagnetic pulse amplitude on the bus can be effectively limited, and the bypass coupling short circuit can remove interference clutter. The current fuse F1 is used as a surge current protection device, and is fused when an overlarge current flows in the bus, so that interruption protection is realized. The diode D6 is used as an alternating current instantaneous suppression diode and absorbs instantaneous surge of the bus, and the capacitor C1 and the capacitor C10 can absorb stray wave of the bypass bus.

Referring to fig. 3, in this embodiment, the circuit board 2 further includes a data bus polarity protection circuit 11, and the data bus polarity protection circuit 11 is electrically connected to the main control MCU 7; the data bus polarity protection circuit 11 is used to ensure that the polarity of the power supply of the post-stage circuit after the input end of the lamp is blindly connected is correct. In the data bus polarity protection circuit 11, the diode D4, the diode D5, the diode D7, and the diode D8 correct the polarity of the data bus, and the input end of the lamp is connected in a blind manner to ensure that the polarity of the power supply of the subsequent circuit is correct.

Referring to fig. 3, in this embodiment, the circuit board 2 further includes a data bus communication signal detection circuit 12, and the data bus communication signal detection circuit 12 is electrically connected to the main control MCU 7; the data bus communication signal detection circuit 12 is used for sampling and collecting signals for the main control MCU7 through the detection circuit.

Specifically, the detection circuit samples and collects signals for the master control MCU7, power supply is provided for the master control MCU7, and the collection digital pulse signals modulated by the circuit are sent to the system chip on the bus communication chip. The diode D1 and the resistor R7 form data pulse signal detection, and a polar capacitor E1 and a capacitor C2 provide a power supply filter circuit.

Referring to fig. 3, the main light source constant current driving circuit 8 provides constant current drive for the main light source of the lamp, and functions such as light source emergency, brightness adjustment, and switching on and off of the main light source are realized under the control of the main control MCU7, wherein the chip U1, the inductor L1, and the diode D2 complete the step-down constant current driving main circuit, the triode Q3 and the triode Q2 realize switching of the main light source to the emergency light source, the whole circuit combination is controlled by two signals of "PWMLED" and "ReduceCtrl" of the main control MCU7, and all control of the main light source driving function is completed. The atmosphere light source constant current driving circuit 9 provides constant current driving for the lamp atmosphere light source, and realizes the functions of brightness adjustment, light source switching and the like under the control of the master control MCU7, wherein the chip U2, the inductor L2 and the diode D3 complete a voltage reduction constant current driving main circuit, and the whole circuit combination is controlled by a signal PWMLED1 of the master control MCU7 to complete all the control of the atmosphere light source driving function.

Referring to fig. 4, in this embodiment, the circuit board 2 further includes an external module input circuit 13, the external module input circuit 13 is electrically connected to the main control MCU7, and the external module input circuit 13 is used for communicating with an external device.

Specifically, the external module input circuit 13 mainly adopts two-way synthesis control by external pulling, the diode D10, the resistor R14 and the triode Q1 mainly realize signal input of an external switch and manual control, the diode D9 and the triode Q1 realize signal input of an external intelligent module (such as a radar module, a 2.4G module, a Wi-Fi module and the like), and various external control signals are input into the main control MCU 7.

Referring to fig. 5, in this embodiment, the circuit board 2 further includes a 5V auxiliary power supply generating circuit 14, the 5V auxiliary power supply generating circuit 14 is electrically connected to the main light source constant current driving circuit 8, the 5V auxiliary power supply generating circuit 14 is electrically connected to the atmosphere light source constant current driving circuit 9, and the 5V auxiliary power supply generating circuit 14 is further electrically connected to the data bus polarity protection circuit 11; the 5V auxiliary power supply generation circuit 14 is configured to implement a 5V voltage source for the power supply filtered by the data bus through the constant voltage drop circuit, and provide a stable voltage source for the subsequent battery charging and external control module.

Specifically, the 5V auxiliary power supply generation circuit 14 implements a 5V voltage source for the power supply filtered by the data bus through the DC TO DC constant voltage drop circuit, and provides a stable voltage source for the battery charging and external control module at the subsequent stage. The diode D11 is used as an isolation diode to prevent circuit current from flowing back, the triode Q4 is controlled by the main control MCU7, and the output of 5V is timely and soft turned off according to system requirements, so that the system centralized control is facilitated. The chip U4, the capacitor C16, the diode D12, the inductor L3, the resistor R26 and the resistor R29 form a voltage reduction and stabilization circuit.

Referring to fig. 6, in this embodiment, the circuit board 2 further includes a standby battery constant current charging and supplying circuit 15, and the standby battery constant current charging and supplying circuit 15 charges the standby battery by using a linear constant current source circuit and is controlled by the power and circuit of the main control MCU 7. The circuit board 2 further comprises a battery pack nondestructive management system detection circuit 16, the battery pack nondestructive management system detection circuit 16 is used for detecting the electric quantity of the battery pack, and the electric quantity of the battery is tested by utilizing the hiccup mode of the main control MCU 7. The circuit board 2 further includes a battery pack emergency boost management system detection circuit 17, and the battery pack emergency boost management system detection circuit 17 is used for detecting the battery voltage.

Specifically, the standby battery constant-current charging power supply circuit 15 adopts a linear constant-current source circuit design, charges the standby battery at a charging rate of 20% -30% of the battery capacity, and is controlled by the main control MCU7 electric quantity control circuit. The circuit combination of the resistor R31, the triode Q7, the triode Q6 and the diode D13 realizes constant current charging, and the resistor R39, the resistor R44 and the triode Q9 realize that the main control MCU7 controls the charging start and stop according to the electric quantity condition of the battery.

Specifically, the battery pack nondestructive management system detection circuit 16 detects the electric quantity of the battery according to the hiccup mode of the main control MCU7, prevents the battery from self-discharging and over-discharging to peripheral circuits, and effectively protects the battery. The battery voltage detection circuit comprises a resistor R33, a resistor R37, a triode Q5 and a triode Q10 which are combined into a hiccup detection mode of the main control MCU7, and a resistor R35, a resistor R40, a capacitor C24 and a capacitor C25.

Specifically, the battery pack emergency BOOST management system detection circuit 17 is used for sending a PWM BOOST switching pulse according to a total power failure state by the main control MCU7, boosting the voltage of the battery to 5-6 times of the voltage, providing energy for the light source constant current circuit, lightening emergency lighting, detecting the voltage of the battery, preventing over-discharge and further damaging the battery, and is an emergency system for closed detection, power supply and monitoring. The inductor L4, the triode Q8, the diode D14 and the polar capacitor E3 form a backup battery for boosting, and the diode D15 is used for isolating, so that the bus current is prevented from flowing backwards, and the normal work of a battery pack circuit is ensured.

Referring to fig. 7, in this embodiment, a chip U3 of a control circuit of the main control MCU7 integrates functional circuit modules such as two-wire high-voltage bus power supply (with HV chip online power supply)/communication, which can support automatic analysis of a digital communication bus, complete a corresponding control timing sequence according to a priority instruction of a control system, and monitor working states of each branch of a lamp control circuit, such as power failure, presence or absence of lighting of a lamp, battery charging, battery voltage detection, on/off of constant-current driving, brightness adjustment, a proportioning coefficient of light power, access of an external signal and an intelligent control module, monitoring of an emergency control state, reporting and detecting of a lamp fault, and the like.

In the main control MCU7 circuit, the resistor R30 and the LED7 have the functions of program power-on self-detection, working state and fault indication, so that a worker can quickly analyze the state of a product, and certain convenience is brought to the application and maintenance of the product.

With the assistance of fig. 8, the chip U3 can be used for application of various field component products, has a high integration level, internally integrates an instruction set of an 80518 bit MCU, HV power supply, a dual-voltage comparator, a current modulator, a data transceiving bus counter/controller, two LDO voltage sources, an RC oscillator, a 10 bit ADC converter, supports bus data debugging and on-chip OTP (one-time programmable) data burning, has safety and convenience of program curing, provides reliability guarantee for system addressing, and facilitates adjustment of product parameters in product practical application.

Referring to fig. 9, to sum up, the present invention is provided with a light source board 1 and a circuit board 2; the light source board 1 comprises an ambience lighting area 3 and a main lighting area 4; the LED power of the atmosphere lighting area 3 accounts for 10% -20% of the power of the light source plate 1, and the LED power of the main lighting area 4 accounts for 80% -90% of the power of the light source plate 1; the LEDs in the atmosphere lighting area 3 emit light directly downwards, and the luminous flux is LED out through a light guide plate 5; the back surface and the inner ring side surface of the light guide plate 5 are processed by adopting light-tight luminescent paper, light-tight silk-screen printing or surface deep atomization, and the light guide direction is designed through optical lattice points; a main lighting through hole is formed in the center of the light guide plate 5; LEDs in the main lighting area 4 are uniformly distributed, the main lighting area 4 is provided with a diffusion mask 6, and the diffusion mask 6 is connected with the main lighting through holes; the circuit board 2 comprises a master control MCU7, a main light source constant current drive circuit 8 and an atmosphere light source constant current drive circuit 9; the main light source constant current driving circuit 8 is electrically connected with the main control MCU7, the main light source constant current driving circuit 8 is also electrically connected with the LEDs of the main illumination area 4, and the main light source constant current driving circuit 8 is used for carrying out constant current driving on the LEDs of the main illumination area 4 so as to realize the lighting, lighting-out and brightness adjustment of the main illumination area 4; the atmosphere light source constant current driving circuit 9 is electrically connected with the master control MCU7, the atmosphere light source constant current driving circuit 9 is also electrically connected with the LEDs of the atmosphere lighting area 3, and the atmosphere light source constant current driving circuit 9 is used for carrying out constant current driving on the LEDs of the atmosphere lighting area 3 so as to realize the lighting, lighting-off and brightness adjustment of the atmosphere lighting area 3. The circuit design can realize four modes of application (centralized control, non-centralized control type, centralized power supply and self-provided power supply) of the lamp, the circuit design of the lamp can also be combined with the control of an external branch line, such as a switch/radar sensing module, a 2.4G module and the response of a special scene, can comprehensively realize the functions of lamp lighting and lamp extinguishing, brightness adjustment, lamp delay, fault inspection, battery charging, emergency lighting and the like, fully controls the utilization rate of the lamp, saves energy, reduces the use cost and the later maintenance cost, and ensures that the product has stronger circulation, better service market and service customers; the LED lamp can be widely applied to commercial illumination, public buildings, shops, indoor and outdoor illumination, can realize conventional illumination, emergency illumination, energy-saving illumination and the like of lamps in various occasions, has better matching property and use flexibility with a control system, and can really meet diversified requirements of customers, thereby reducing the complexity of diversified stock and order, and improving the cost performance of products due to the extensibility.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An up-down subarea variable light-emitting emergency lamp is characterized by comprising a light source board (1) and a circuit board (2); the light source board (1) comprises an ambience lighting area (3) and a main lighting area (4); the LED power of the atmosphere lighting area (3) accounts for 10% -20% of the power of the light source plate (1), and the LED power of the main lighting area (4) accounts for 80% -90% of the power of the light source plate (1);

the LEDs in the atmosphere lighting area (3) emit light directly downwards, and the luminous flux is LED out through the light guide plate (5); the back surface and the inner ring side surface of the light guide plate (5) are processed in a light-tight luminescent paper, light-tight silk-screen printing or surface deep atomization mode, and the light guide direction is designed through optical dots; the center of the light guide plate (5) is provided with a main lighting through hole;

the LEDs in the main illumination area (4) are uniformly distributed, the main illumination area (4) is provided with a diffusion mask (6), and the diffusion mask (6) is connected with the main illumination through holes;

the circuit board (2) comprises a master control MCU (7), a main light source constant current driving circuit (8) and an atmosphere light source constant current driving circuit (9); the main light source constant current driving circuit (8) is electrically connected with the main control MCU (7), the main light source constant current driving circuit (8) is also electrically connected with the LED of the main lighting area (4), and the main light source constant current driving circuit (8) is used for carrying out constant current driving on the LED of the main lighting area (4) so as to realize the lighting, the light-off and the brightness adjustment of the main lighting area (4);

the atmosphere light source constant current drive circuit (9) is electrically connected with the master control MCU (7), the atmosphere light source constant current drive circuit (9) is also electrically connected with the LEDs of the atmosphere lighting area (3), and the atmosphere light source constant current drive circuit (9) is used for carrying out constant current drive on the LEDs of the atmosphere lighting area (3) so as to realize the lighting, the light-out and the brightness adjustment of the atmosphere lighting area (3).

2. The up-down subarea variable light-emitting emergency lamp according to claim 1, wherein the LED light of the atmosphere lighting area (3) reaches the exposed portion of the light guide plate (5) through curved surface conduction, after reflection and refraction at the edge of the light guide plate (5), the light guide plate (5) has light guidance through engraved or printed mesh point and mesh line processing, the light is controlled to emit light up and down, and the light-emitting angle, the light-emitting brightness and the light-emitting effect are controlled through the design of the mesh point or mesh line of the light guide plate (5).

3. The up-down partition variable light-emitting emergency lamp according to claim 1, wherein the circuit board (2) further comprises an anti-surge interference circuit (10), the anti-surge interference circuit (10) is used for electromagnetic pulse amplitude limiting on the bus and bypass coupling short circuit to remove interference clutter;

the anti-surge interference circuit (10) is electrically connected with the main control MCU (7), the anti-surge interference circuit (10) comprises a current fuse F1, a diode D6, a capacitor C1 and a capacitor C10, the capacitor C1 and the capacitor C10 are connected in series and then connected with the diode D6 in parallel, the current fuse F1 is electrically connected with the diode D6, and the current fuse F1 is also electrically connected with the capacitor C1.

4. The up-down partition variable light-emitting emergency lamp according to claim 3, wherein the circuit board (2) further comprises a data bus polarity protection circuit (11), and the data bus polarity protection circuit (11) is electrically connected with the main control MCU (7); the data bus polarity protection circuit (11) is used for ensuring that the polarity of a power supply of a post-stage circuit after the input end of the lamp is in blind connection is correct.

5. The up-down partition variable luminous emergency lamp according to claim 4, wherein the circuit board (2) further comprises a data bus communication signal detection circuit (12), and the data bus communication signal detection circuit (12) is electrically connected with the main control MCU (7); the data bus communication signal detection circuit (12) is used for sampling and collecting signals for the main control MCU (7) through a detection circuit.

6. The up-down partition variable light-emitting emergency lamp according to claim 5, wherein the circuit board (2) further comprises an external module input circuit (13), the external module input circuit (13) is electrically connected with the main control MCU (7), and the external module input circuit (13) is used for communicating with external equipment.

7. The up-down subarea variable light-emitting emergency lamp according to claim 6, wherein the circuit board (2) further comprises a 5V auxiliary power supply generating circuit (14), the 5V auxiliary power supply generating circuit (14) is electrically connected with the main light source constant current driving circuit (8), the 5V auxiliary power supply generating circuit (14) is electrically connected with the atmosphere light source constant current driving circuit (9), and the 5V auxiliary power supply generating circuit (14) is further electrically connected with the data bus polarity protection circuit (11);

the 5V auxiliary power supply generation circuit (14) is used for realizing a 5V voltage source for the power supply after data bus filtering through a constant voltage reduction circuit, and providing a stable voltage source for a rear-stage battery charging and external control module.

8. The up-down partition variable light-emitting emergency lamp according to claim 7, wherein the circuit board (2) further comprises a standby battery constant current charging power supply circuit (15), and the standby battery constant current charging power supply circuit (15) charges the standby battery by adopting a linear constant current source circuit and is controlled by the power and the circuit of the main control MCU (7).

9. The up-down partition variable luminous emergency lamp according to claim 8, characterized in that the circuit board (2) further comprises a battery pack nondestructive management system detection circuit (16), the battery pack nondestructive management system detection circuit (16) is used for battery pack power detection, and the power of the battery is tested by using the hiccup mode of the master MCU (7).

10. The lamp of claim 9, wherein the circuit board (2) further comprises a battery emergency boost management system detection circuit (17), and the battery emergency boost management system detection circuit (17) is configured to detect a battery voltage.

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