Instrument with adjustable backlight brightness

Abstract

The utility model provides an instrument with adjustable backlight brightness, which comprises an instrument shell, the instrument shell comprises an instrument body and a display screen, the display screen is arranged on the instrument body, a brightness adjusting module is arranged in the instrument body, and the brightness adjusting module comprises an adjusting circuit, a power supply circuit and an indication icon circuit. The power supply circuit is used for supplying power to the adjusting circuit, the indication icon circuit and the instrument shell, the adjusting circuit is further connected with the indication icon circuit, and the indication icon circuit is used for displaying indication icons of the instrument shell. The utility model has the beneficial effects that the backlight brightness of the instrument can be adjusted, specifically, simple backlight of a nixie tube instrument and a liquid crystal instrument is realized, a controllable shunting path is added, two-stage adjustment of the brightness of the instrument is realized, light is not dazzling during riding at night, the riding safety at night is improved, and the display content of the instrument can be clearly seen in the daytime.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric vehicle instrument field especially is involved a kind of instrument of adjustable backlight brightness. BACKGROUND

[0002] Two-wheel electric vehicle is the indispensable traffic tool of mass travel demand, and its use safety is related to the safety of people's life and property, to promote the healthy and orderly development of electric vehicle industry, provide more reliable guarantee for the use of electric vehicle, the display of electric vehicle instrument on prior art exists daytime brightness is not enough, it is not clear under sunlight, night instrument display is too bright, light glare affects night riding safety. INVENTION CONTENTS

[0003] Therefore, the utility model aims at providing a kind of instrument of adjustable backlight brightness to solve the problem of instrument brightness automatic adjusting device and the problem of electric vehicle instrument brightness unadjustable.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A kind of instrument of adjustable backlight brightness, including instrument shell, the instrument shell includes instrument body and display screen, display screen is installed on instrument body, brightness adjusting module is installed in instrument body, the brightness adjusting module includes adjusting circuit, power supply circuit and indication icon circuit, the power supply circuit is used to power supply adjusting circuit, indication icon circuit and instrument shell, adjusting circuit is also connected indication icon circuit, indication icon circuit is used to show the indication icon of instrument shell.

[0006] Further, the adjusting circuit includes headlamp circuit and adjusting subcircuit, the headlamp circuit and the adjusting subcircuit are connected, and the headlamp circuit includes resistor R11, resistor R9, diode D8, resistor R12, diode D7 and adjusting chip U4;Resistor R11, resistor R9 are all connected to headlamp, resistor R11 is also grounded through diode D8, resistor R9 is respectively connected in parallel with resistor R12, diode D7 and adjusting chip U4, diode D8 is also respectively connected in parallel with resistor R12, diode D7, and adjusting chip U4 is connected with adjusting subcircuit and indication icon circuit respectively.

[0007] Further, the adjusting subcircuit includes resistor R4, resistor R5, resistor R3, triode Q1, resistor R2, diode D3, diode D4, diode D5 and diode D6, one end of resistor R4 is connected with adjusting chip U4, the other end is connected with resistor R5 and triode Q1 respectively, triode Q1 is also connected with resistor R5 and resistor R3 respectively, resistor R3 is connected with resistor R2 and diode D3 respectively, diode D3 is also connected with diode D4, diode D5 and diode D6 in turn.

[0008] Further, the power supply circuit comprises resistance R1, resistance R7, capacitor C3, power supply chip U5, resistance R8, resistance R46, resistance R6, resistance R10, capacitor C10, capacitor C12, diode D1, diode D2, inductor L1, capacitor C7, capacitor C8 and resistance R14, one end of the resistance R1, resistance R7 and capacitor C3 is connected with VCC working voltage, the other end of the resistance R1 and resistance R7 is connected with the power supply chip U5, the power supply chip U5 is connected with resistance R8, resistance R46, resistance R6, resistance R10, capacitor C10, diode D2, capacitor C12 and inductor L1 respectively, the resistance R6 is connected with resistance R10, capacitor C7, capacitor C8 and resistance R14 in parallel respectively, the capacitor C12 is further connected with inductor L1, and the capacitor C10 is further connected with diode D2.

[0009] Further, the indication icon circuit comprises resistance R20, resistance R26, triode Q3, resistance R13, LED lamp L2, resistance R21, resistance R27, triode Q4, resistance R15, LED lamp L3, resistance R22, resistance R28, triode Q5, resistance R16, LED lamp L4, resistance R23, resistance R29, triode Q6, resistance R17, LED lamp L5, resistance R24, resistance R30, triode Q7, resistance R18, LED lamp L-LOW1, resistance R25, resistance R31, triode Q2, resistance R19 and LED lamp L-P1, one end of the resistance R20, resistance R21, resistance R22, resistance R23, resistance R24 and resistance R25 is connected with the adjusting chip U4, one end of the resistance R13, resistance R15, resistance R16, resistance R17, resistance R18 and resistance R19 is connected with VCC working voltage, the other end of the resistance R13 is connected with triode Q3 through LED lamp L2, the triode Q3 is further connected with resistance R20 and resistance R26 respectively, the other end of the resistance R15 is connected with triode Q4 through LED lamp L3, the triode Q4 is further connected with resistance R21 and resistance R27 respectively, the other end of the resistance R16 is connected with triode Q5 through LED lamp L4, the triode Q5 is further connected with resistance R22 and resistance R28 respectively, the other end of the resistance R17 is connected with triode Q6 through LED lamp L5, the triode Q6 is further connected with resistance R23 and resistance R29 respectively, the other end of the resistance R18 is connected with triode Q7 through LED lamp L-LOW1, the triode Q7 is further connected with resistance R24 and resistance R30 respectively, the other end of the resistance R19 is connected with triode Q2 through LED lamp L-P1, and the triode Q2 is further connected with resistance R25 and resistance R31 respectively.

[0010] Further, the instrument body is internally provided with a mounting panel on the top and a mounting seat on the bottom.

[0011] Compared with the prior art, the instrument with adjustable backlight brightness has the following advantages:

[0012] The utility model discloses a kind of back light brightness adjustable instrument, the back light brightness of this instrument is adjustable, specifically, the back light of simple digital tube instrument and liquid crystal instrument is realized, increase controllable shunt, realize the two-stage regulation of instrument brightness, night riding light is not dazzling, improve night riding safety, daytime can clearly see instrument display content. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings that form part of the utility model are used to provide further understanding to the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model.In the drawings:

[0014] Figure 1 It is the instrument shell schematic diagram described in the utility model embodiment;

[0015] Figure 2 It is the power supply circuit schematic diagram described in the utility model embodiment;

[0016] Figure 3 It is the adjustment circuit schematic diagram described in the utility model embodiment;

[0017] Figure 4 It is the indication icon circuit schematic diagram described in the utility model embodiment;

[0018] Figure 5 It is the instrument shell explosion schematic diagram described in the utility model embodiment;

[0019] Figure 6 It is the instrument shell bottom schematic diagram described in the utility model embodiment.

[0020] Reference signs explanation:

[0021] 1, instrument shell;11, instrument body;12, display screen;13, mounting panel;14, mounting seat. DETAILED DESCRIPTION

[0022] It should be noted that, in the case of no conflict, the embodiment in the utility model and the features in the embodiment can be combined with each other.

[0023] In the description of the utility model, it needs to be understood that, the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0024] In the description of the utility model, it needs to be understood that, the orientation or position relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0025] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] As Figures 1 to 6 Indicated, a kind of back light brightness adjustable instrument, including instrument shell 1, the instrument shell 1 includes instrument body 11 and display screen 12, display screen 12 is installed on instrument body 11, brightness adjustment module is installed in instrument body 11, the brightness adjustment module includes adjusting circuit, power supply circuit and indication icon circuit, the power supply circuit is used to adjust circuit, indication icon circuit and instrument shell 1 power supply, adjusting circuit is also connected indication icon circuit, indication icon circuit is used to show the indication icon of instrument shell 1.

[0027] The utility model has the advantages that: the back light brightness of the instrument can be adjusted, specifically, the back light of simple digital tube instrument and liquid crystal instrument is realized, controllable shunt path is increased, two-stage regulation of instrument brightness is realized, night riding light is not dazzling, night riding safety is improved, and instrument display content can be clearly seen in the daytime.

[0028] In a preferred embodiment of the present invention, the regulation circuit includes a headlight circuit and a regulation sub-circuit, the headlight circuit and the regulation sub-circuit are connected, and the headlight circuit includes a resistor R11, a resistor R9, a diode D8, a resistor R12, a diode D7 and a regulation chip U4; the resistor R11 and the resistor R9 are both connected to the headlight, the resistor R11 is also grounded through the diode D8, the resistor R9 is respectively connected in parallel with the resistor R12, the diode D7 and the regulation chip U4, the diode D8 is also respectively connected in parallel with the resistor R12 and the diode D7, and the regulation chip U4 is respectively connected to the regulation sub-circuit and the indicator icon circuit;

[0029] The regulation subcircuit includes a resistor R4, a resistor R5, a resistor R3, a transistor Q1, a resistor R2, a diode D3, a diode D4, a diode D5, and a diode D6. One end of the resistor R4 is connected to the regulation chip U4, and the other end is connected to the resistor R5 and the transistor Q1. The transistor Q1 is further connected to the resistor R5 and the resistor R3. The resistor R3 is further connected to the resistor R2 and the diode D3. The diode D3 is further connected to the diode D4, the diode D5, and the diode D6 in sequence. In this embodiment, the transistor Q1, the resistor R4, the resistor R5, and the resistor R3 are connected. The collector of the transistor Q1 is connected to one end of the main power supply circuit (power supply circuit) of the LED digital light through the resistor R3. The emitter of the transistor Q1 is connected to the negative electrode of the main power supply circuit (power supply circuit) of the LED digital light. The base of the transistor Q1 is connected to the power supply of the headlight through the resistor R4 and is also connected to the emitter of the transistor Q1 through the resistor R5. Transistor Q1 is used as a switch tube, and resistors R4, R5, R3 and transistor Q1 form a shunt path. The closing and opening of the headlamp switch controls whether the shunt path is shunted.

[0030] In a preferred embodiment of the present invention, the power supply circuit includes a resistor R1, a resistor R7, a capacitor C3, a power supply chip U5, a resistor R8, a resistor R46, a resistor R6, a resistor R10, a capacitor C10, a capacitor C12, a diode D1, a diode D2, an inductor L1, a capacitor C7, a capacitor C8 and a resistor R14. One end of the resistor R1, the resistor R7 and the capacitor C3 are all connected to the VCC working voltage, and the other end of the resistor R1 and the resistor R7 are connected to the power supply chip U5. The power supply chip U5 is respectively connected to the resistor R8, the resistor R46, the resistor R6, the resistor R10, the capacitor C10, the diode D2, the capacitor C12 and the inductor L1. The resistor R6 is respectively connected in parallel with the resistor R10, the capacitor C7, the capacitor C8 and the resistor R14. The capacitor C12 is also connected to the inductor L1, and the capacitor C10 is also connected to the diode D2.

[0031] In a preferred embodiment of the present invention, the indicator icon circuit includes a resistor R20, a resistor R26, a transistor Q3, a resistor R13, an LED lamp L2, a resistor R21, a resistor R27, a transistor Q4, a resistor R15, an LED lamp L3, a resistor R22, a resistor R28, a transistor Q5, a resistor R16, an LED lamp L4, a resistor R23, a resistor R29, a transistor Q6, a resistor R17, an LED lamp L5, a resistor R24, a resistor R30, a transistor Q7, a resistor R18, an LED lamp L-LOW1, a resistor R25, a resistor R31, a transistor Q2, a resistor R19 and an LED lamp L-P1. One end of the resistor R20, the resistor R21, the resistor R22, the resistor R23, the resistor R24 ​​and the resistor R25 are all connected to the regulating chip U4. The resistor R13, the resistor R15, the resistor R16, the resistor R17, One end of resistor R18 and resistor R19 are both connected to the VCC operating voltage, the other end of resistor R13 is connected to transistor Q3 through LED lamp L2, transistor Q3 is also connected to resistor R20 and resistor R26 respectively, the other end of resistor R15 is connected to transistor Q4 through LED lamp L3, transistor Q4 is also connected to resistor R21 and resistor R27 respectively, the other end of resistor R16 is connected to transistor Q5 through LED lamp L4, transistor Q5 is also connected to resistor R22 and resistor R28 respectively, the other end of resistor R17 is connected to transistor Q6 through LED lamp L5, transistor Q6 is also connected to resistor R23 and resistor R29 respectively, the other end of resistor R18 is connected to transistor Q7 through LED lamp L-LOW1, transistor Q7 is also connected to resistor R24 ​​and resistor R30 respectively, the other end of resistor R19 is connected to transistor Q2 through LED lamp L-P1, transistor Q2 is also connected to resistor R25 and resistor R31 respectively.

[0032] In a preferred embodiment of the present invention, a mounting panel 13 is installed on the upper part of the instrument body 11, and a mounting base 14 is installed on the bottom of the instrument body 11. In actual use, the mounting panel 13 is used to install electrical components so that they can be displayed on the display screen 11, and the mounting base 14 facilitates the installation of the instrument on the entire vehicle.

[0033] The working principle of an instrument with adjustable backlight brightness:

[0034] During the day, the headlight switch is in the closed state, the transistor Q1 is cut off, the shunt branch is closed, and the circuit power supply VCC directly supplies power to the light-emitting diodes D3, D4, D5, and D6 through the resistor R2. The brightness is in the high-brightness state, and it is clear to see during the day;

[0035] At night, the headlamp is lighted after the headlamp switch is turned on, the base of the triode Q1 is connected with the headlamp power supply, the triode Q1 is in the saturated conduction state, the triode Q1 is in the saturated conduction state, the shunt branch is opened, a part of the current passes through the resistance R3, and the current flowing through the resistance R2 is shunted, so that the current of the light emitting diodes D3, D4, D5 and D6 is reduced, and the brightness of the LED display is reduced.

[0036] It should be noted that the control program is not improved, and the control program and the electrical device are prior art.

[0037] The above only describes the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A meter with adjustable backlight brightness, characterized by: The instrument housing includes an instrument body and a display screen. The display screen is installed on the instrument body. A brightness adjustment module is installed in the instrument body. The brightness adjustment module includes an adjustment circuit, a power supply circuit and an indicator icon circuit. The power supply circuit is used to supply power to the adjustment circuit, the indicator icon circuit and the instrument housing. The adjustment circuit is also connected to the indicator icon circuit. The indicator icon circuit is used to display the indicator icon of the instrument housing.

2. The instrument with adjustable backlight brightness according to claim 1, characterized in that: The regulation circuit includes a headlight circuit and a regulation sub-circuit, which are connected to the headlight circuit. The headlight circuit includes a resistor R11, a resistor R9, a diode D8, a resistor R12, a diode D7 and a regulation chip U4. The resistor R11 and the resistor R9 are both connected to the headlight, and the resistor R11 is also grounded through the diode D8. The resistor R9 is connected in parallel with the resistor R12, the diode D7 and the regulation chip U4 respectively. The diode D8 is also connected in parallel with the resistor R12 and the diode D7 respectively. The regulation chip U4 is connected to the regulation sub-circuit and the indicator icon circuit respectively.

3. The instrument with adjustable backlight brightness according to claim 2, characterized in that: The regulation subcircuit includes a resistor R4, a resistor R5, a resistor R3, a transistor Q1, a resistor R2, a diode D3, a diode D4, a diode D5 and a diode D6. One end of the resistor R4 is connected to the regulation chip U4, and the other end is respectively connected to the resistor R5 and the transistor Q1. The transistor Q1 is also respectively connected to the resistor R5 and the resistor R3. The resistor R3 is respectively connected to the resistor R2 and the diode D3. The diode D3 is also sequentially connected to the diode D4, the diode D5 and the diode D6.

4. The instrument with adjustable backlight brightness according to claim 2, characterized in that: The power supply circuit includes a resistor R1, a resistor R7, a capacitor C3, a power supply chip U5, a resistor R8, a resistor R46, a resistor R6, a resistor R10, a capacitor C10, a capacitor C12, a diode D1, a diode D2, an inductor L1, a capacitor C7, a capacitor C8 and a resistor R14. One end of the resistor R1, the resistor R7 and the capacitor C3 are all connected to the VCC working voltage, and the other ends of the resistor R1 and the resistor R7 are connected to the power supply chip U5. The power supply chip U5 is respectively connected to the resistor R8, the resistor R46, the resistor R6, the resistor R10, the capacitor C10, the diode D2, the capacitor C12 and the inductor L1. The resistor R6 is respectively connected in parallel with the resistor R10, the capacitor C7, the capacitor C8 and the resistor R14. The capacitor C12 is also connected to the inductor L1, and the capacitor C10 is also connected to the diode D2.

5. The instrument with adjustable backlight brightness according to claim 2, characterized in that: The indicator icon circuit includes resistor R20, resistor R26, transistor Q3, resistor R13, LED lamp L2, resistor R21, resistor R27, transistor Q4, resistor R15, LED lamp L3, resistor R22, resistor R28, transistor Q5, resistor R16, LED lamp L4, resistor R23, resistor R29, transistor Q6, resistor R17, LED lamp L5, resistor R24, resistor R30, transistor Q7, resistor R18, LED lamp L-LOW1, resistor R25, resistor R31, transistor Q2, resistor R19 and LED lamp L-P1. One end of the resistor R20, resistor R21, resistor R22, resistor R23, resistor R24 ​​and resistor R25 are all connected to the adjustment chip U4. The resistor R13, resistor R15, resistor R16, resistor R17, resistor R18, resistor One end of R19 is connected to the VCC working voltage, the other end of resistor R13 is connected to transistor Q3 through LED lamp L2, transistor Q3 is also connected to resistor R20 and resistor R26 respectively, the other end of resistor R15 is connected to transistor Q4 through LED lamp L3, transistor Q4 is also connected to resistor R21 and resistor R27 respectively, the other end of resistor R16 is connected to transistor Q5 through LED lamp L4, transistor Q5 is also connected to resistor R22 and resistor R28 respectively, the other end of resistor R17 is connected to transistor Q6 through LED lamp L5, transistor Q6 is also connected to resistor R23 and resistor R29 respectively, the other end of resistor R18 is connected to transistor Q7 through LED lamp L-LOW1, transistor Q7 is also connected to resistor R24 ​​and resistor R30 respectively, the other end of resistor R19 is connected to transistor Q2 through LED lamp L-P1, transistor Q2 is also connected to resistor R25 and resistor R31 respectively.

6. The instrument with adjustable backlight brightness according to claim 1, characterized in that: A mounting panel is installed on the upper part of the instrument body, and a mounting seat is installed on the bottom of the instrument body.

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