CN204559954U - Automobile room lamp - Google Patents

Automobile room lamp Download PDF

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Publication number
CN204559954U
CN204559954U CN201520191217.5U CN201520191217U CN204559954U CN 204559954 U CN204559954 U CN 204559954U CN 201520191217 U CN201520191217 U CN 201520191217U CN 204559954 U CN204559954 U CN 204559954U
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China
Prior art keywords
control module
output
input
touch
unit
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201520191217.5U
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Chinese (zh)
Inventor
杜冬冬
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Shenzhen Wan Lang Photoelectric Co Ltd
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Shenzhen Wan Lang Photoelectric Co Ltd
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Priority to CN201520191217.5U priority Critical patent/CN204559954U/en
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Publication of CN204559954U publication Critical patent/CN204559954U/en
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Abstract

The utility model discloses a kind of automobile room lamp, this automobile room lamp comprises LED, lamp housing, power module, contact, touch-control module and control module.Contact be located at envelope inner surface and for receive user input operational order and according to operational order output voltage signal.Control module receive contact export voltage signal and according to this voltage signal outputs level signals.Control module is for the level signal that receives touch-control module and export and according to the operating state of this level signal control LED.The input of touch-control module is connected with contact, and the output of touch-control module is connected with the signal input part of control module, and the control end of control module is connected with LED.The utility model not only overcomes the shortcoming of the noise of the loaded down with trivial details operation of button operation process and operation generation, and the internal structure that this automobile room lamp does not need for button mounting and adjusting automobile when installing, thus the installation of convenient automobile room lamp and use.

Description

Automobile room lamp
Technical field
The utility model relates to field of light fittings, particularly relates to a kind of automobile room lamp.
Background technology
Traditional automobile room lamp, usually uses mechanical key to control automobile room lamp, such as: turn on light, turn off the light, brightness increases or subtract.But, when installing this type of car light, need the structure revising car room, to mate the position of car light.So not only increase the workload of installation, and have impact on the attractive in appearance of Integral automobile.On the other hand, when operating machine button, certain noise can be produced, to affect the normal use of user.
Utility model content
The utility model provides a kind of automobile room lamp, is intended to the structure not changing car room when installing automobile room lamp, reduces the workload of installing, and ensure that the attractive in appearance of Integral automobile; On the other hand, the noise in automobile room lamp use procedure is reduced.
The automobile room lamp that the utility model provides comprise for luminescence LED, cover in the lamp housing of this LED outside and the power module of powering for described LED, described automobile room lamp also comprises:
Contact, be arranged at described envelope inner surface, for receive user input operational order and according to described operational order output voltage signal;
Touch-control module, receives the voltage signal that described contact exports, and exports control signal according to the voltage signal received; And,
Control module, for receiving the control signal that described touch-control module exports, and controls the operating state of described LED according to this control signal;
Wherein, the input of described touch-control module is connected with described contact, and the output of described touch-control module is connected with the signal input part of described control module, and the output of described control module is connected with described LED.
Preferably, described contact is the hard contact for responding to static electricity on human body's voltage.
Preferably, described touch-control module comprises touch chip, the first resistance and the first electric capacity, wherein, described touch chip comprises touching signals input and control signal output, the touching signals input of described touch chip is connected with described contact through the first resistance, node between described touch chip and described first resistance is through described first capacity earth, and the control signal output of described touch chip is connected with the signal input part of described control module.
Preferably, described touch-control module also comprises the memory cell for storing real-time touching signals, and described memory cell passes through I 2c bus and described touch chip communicate to connect.
Preferably, described control module comprises PWM unit and constant current driving unit, the input of described PWM unit is connected with the control signal output of described touch chip, the output of described PWM unit is connected with the input of described constant current driving unit, and the output of described constant current driving unit is connected with described LED;
Described touch chip sends a control signal to described PWM unit, the pwm signal that described PWM unit is adjustable according to the control signal output duty cycle of the described touch chip received, described constant current driving unit controls the operating current of described LED to control the operating state of described LED according to described pwm signal.
Preferably, described PWM unit comprises triode, the second resistance and the 3rd resistance, the base stage of described triode is connected with the control signal output of described touch chip through described second resistance, the emitter of described triode is connected with the output of described power module, the collector electrode of described triode is connected with described one end of 3rd resistance, the input of constant current driving unit, the other end ground connection of described 3rd resistance.
Preferably, described power module comprises voltage regulation unit, input filter unit and output filtering unit, described voltage regulation unit comprises input, output and earth terminal, and the input of described voltage regulation unit is connected with external direct current power supply through described input filter unit as the input of described power module; The earth terminal ground connection of described voltage regulation unit; The output of described voltage regulation unit is connected through the power end of described output filtering unit and described touch chip, the power end of memory cell, the power end of constant current driving unit; The voltage signal of the output of described external direct current power supply, after described voltage regulation unit process, exports low-voltage dc signal and provides working power for described touch chip, memory cell, constant current driving unit.
Preferably, described LED is chip on board packaged light source.
The automobile room lamp that the utility model provides is by being arranged on the inner surface of lamp housing by contact, this contact is for responding to the electrostatic potential of human body touch and the voltage signal sensed being transferred to touch-control module, and touch-control module differentiates that the duration of voltage signal is to identify the classification entered the operating instructions.Touch-control module outputs control signals to control module according to the classification of operational order, with the adjustment of the start of control LED, shutdown and brightness.The utility model utilizes the contact being arranged on envelope inner surface to substitute mechanical key of the prior art, user only needs touch contact gently corresponding to the position of lamp housing outer surface, can enter the operating instructions, the shortcoming of the noise produced in the loaded down with trivial details and operating process of the button operation process in prior art that overcomes.On the other hand, this contact is arranged on the inner surface of lamp housing, therefore, in the process that automobile room lamp is installed, does not need extraly for installing the internal structure of button adjustment automobile, thus the installation and maintenance of convenient automobile room lamp and use.
Accompanying drawing explanation
Fig. 1 is the module diagram of the utility model automobile room lamp;
Fig. 2 is the electrical block diagram of the utility model automobile room lamp.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of automobile room lamp.
With reference to the module diagram that Fig. 1 and 2, Fig. 1 are the utility model automobile room lamp; Fig. 2 is the electrical block diagram of the utility model automobile room lamp.
In the present embodiment, this automobile room lamp comprise for luminescence LED1, cover in the lamp housing of LED1 outside, and the power module 2 of powering for this LED1.This automobile room lamp also comprises contact 3, touch-control module 4 and control module 5.
Contact 3 be arranged at envelope inner surface, for receive user input operational order and according to operational order output voltage signal.
Touch-control module 4 receives the voltage signal of contact 3 output and exports control signal according to this voltage signal.
Control module 5 is for the control signal that receives touch-control module 4 and export and according to the operating state of this control signal control LED1.
The input of touch-control module 4 is connected with contact 3, and the output of touch-control module 4 is connected with the signal input part of control module 5, and the control end of control module 5 is connected with LED1.
In the present embodiment, contact 3 is a sheet metal (aluminium flake, copper sheet, silver net etc.), and this sheet metal can stick in the inner surface of lamp housing by modes such as adhesive glues.When human body directly touches or (insulator of midfeather about 5 mm of thickness) touches this sheet metal indirectly, this sheet metal can sense the electrostatic of human body, and is conducted by the electrostatic sensed.When user enters the operating instructions, only need to touch this sheet metal corresponding to the position of the outer surface of lamp housing.Sheet metal senses the electrostatic potential of human body, and the voltage signal sensed is transferred to the input of touch-control module 4.It should be noted that operational order comprises operational order of turning on light, operational order of turning off the light, lighten operational order and dimmed operation instruction.The duration that the voltage signal that touch-control module 4 can be exported by identification sheet metal continues differentiates the classification of operational order.Such as: voltage signal duration is greater than 0.65 second for lightening operational order or dimmed operation instruction.It is operational order or the operational order of turning off the light of turning on light that voltage signal duration is less than 0.65 second.LED1 operating state comprises brightness, conducting and disconnection.The voltage signal that contact 3 inputs is converted to corresponding control signal and exports control module 5 to by touch-control module 4, and control module 5 is according to the operating state of this control signal control LED1.
The automobile room lamp that the utility model provides is by being arranged on the inner surface of lamp housing by contact 3, this contact 3 is for responding to the electrostatic potential of human body touch and the voltage signal sensed being transferred to touch-control module 4, and touch-control module 4 differentiates that the duration of voltage signal is to identify the classification entered the operating instructions.Touch-control module 4 outputs control signals to control module 5 according to the classification of operational order, with the adjustment of the start of control LED1, shutdown and brightness.The utility model utilizes the contact 3 being arranged on envelope inner surface to substitute mechanical key of the prior art, user only needs touch contact 3 relevant position gently, can enter the operating instructions, the shortcoming of the noise produced in the loaded down with trivial details and operating process of the button operation process in prior art that overcomes.On the other hand, this contact 3 is arranged on the inner surface of lamp housing, therefore, in the process that automobile room lamp is installed, does not need extraly for installing the internal structure of button adjustment automobile, thus the installation and maintenance of convenient automobile room lamp and use.
Particularly, touch-control module 4 comprises touch chip U1, the first resistance R1 and the first electric capacity C1, wherein, touch chip U1 comprises touching signals input Touch and control signal output OUT, the touching signals input Touch of touch chip U1 is connected with contact 3 through the first resistance R1, node between touch chip U1 and the first resistance R1 is through the first electric capacity C1 ground connection, and the control signal output OUT of touch chip U1 is connected with the signal input part of control module 5.
The touching signals input Touch of touch chip U1 is connected with contact 3 through the first resistance R1.Like this, the first resistance R1 weakens the electric current that contact 3 transfers to touch chip U1, avoids electric current excessive and burn out touch chip U1.Node between touch chip U1 and the first resistance R1 is through the first electric capacity C1 ground connection.By changing the size of the first electric capacity C1, change the sensitivity of touch-control.The size of the first electric capacity C1 can set according to actual conditions.
In the present embodiment, when contact 3 senses static electricity on human body, the voltage signal sensed is sent to touch chip U1 by contact 3.Touch chip U1 differentiates the voltage signal received.When the duration that voltage signal continues is less than 0.65 second, touch-control module 4 exports high level or low level signal to control module 5, for unlatching or the closedown of control LED1; And when voltage signal continue duration be greater than 0.65 second time, the pulse signal that touch-control module 4 output duty cycle is adjustable to control module 5, for carrying out brightness adjustment control to LED1.
When current LED1 is in OFF state, if the voltage signal that now touch chip U1 receives continues duration and is less than 0.65 second, then touch chip U1 output low level controls signal to control module 5, control module 5 correspondence exports high level to LED1, control LED1 opens, and the brightness when brightness after LED1 unlatching is last unlatching.
When current LED1 is in opening, if the voltage signal that now touch chip U1 receives continues duration and is less than 0.65 second, then touch chip U1 exports high-level control signal to control module 5, and the corresponding output low level of control module 5 is to LED1, and control LED1 closes; If that now touches contact 3 lightens position, and the voltage signal that touch chip U1 receives continues duration and is greater than 0.65 second, the then pulse signal of touch chip U1 output duty cycle reduction, the pwm signal that the corresponding output duty cycle of control module 5 increases is to LED1, and the brightness of control LED1 increases; If that now touches contact 3 dims position, and the voltage signal that touch chip U1 receives continues duration and is greater than 0.65 second, the then pulse signal of touch chip U1 output duty cycle increase, the pwm signal that the corresponding output duty cycle of control module 5 reduces is to LED1, and the brightness of control LED1 reduces.
It should be noted that contact 3 can also be set to two or more, as long as realize contact 3 can identify the operational order that user inputs.The level signal that touch-control module 4 exports also can set as the case may be.
Further, described touch-control module 4 also comprises the memory cell U2 for storing real-time touching signals, and described memory cell U2 passes through I 2c bus and described touch chip U1 communicate to connect.
In the present embodiment, this I 2c bus comprises data wire SDA and clock line SCL, by being connected the corresponding port of memory cell U2 and touch chip U1, can realize the real-time Transmission of touching signals, and being stored in memory cell U2.When the unexpected power down of this automobile room lamp, the state of the touching signals inputted before power down will store by this memory cell U2, the operating state being equivalent to the LED1 before by power down stores, when again powering on to automobile room lamp, directly this touching signals will be transferred to LED1, now, the operating state of LED1 will be consistent with before power down.
Further, described control module 5 comprises PWM unit 51 and constant current driving unit 52, the input of described PWM unit 51 is connected with the control signal output of described touch chip U1, the output of described PWM unit 51 is connected with the input of described constant current driving unit 52, and the output of described constant current driving unit 52 is connected with described LED1;
Described touch chip U1 sends a control signal to described PWM unit 51, the pwm signal that described PWM unit 51 is adjustable according to the control signal output duty cycle of the described touch chip U1 received, described constant current driving unit 52 controls the operating current of described LED1 to control the operating state of described LED1 according to described pwm signal.
Particularly, described PWM unit 51 comprises triode Q1, the second resistance R2 and the 3rd resistance R3, the base stage of described triode Q1 is connected with the control signal output of described touch chip U1 through described second resistance R2, the emitter of described triode Q1 is connected with the output of described power module 2, the collector electrode of described triode Q1 is connected with described one end of 3rd resistance R3, the input CON of constant current driving unit 52, the other end ground connection of described 3rd resistance R3.
In the present embodiment, this second resistance R2 is connected between the control signal output OUT of touch chip U1 and the base stage of triode Q1, plays current limliting, in case too high electric current punctures this triode Q1.3rd resistance R3 is pull down resistor.This triode Q1 preferably adopts PNP type triode Q1, when the control signal output OUT of touch chip U1 exports high level, this triode Q1 closes, the current collection very low level of triode Q1, and this low level signal transfers to constant current driving unit 52, now, the electric current that constant current driving unit 52 exports reduces; When the control signal output OUT output low level of touch chip U1, this triode Q1 conducting, the current collection very high level of triode Q1, and this high level signal transfers to constant current driving unit 52, now, the electric current that constant current driving unit 52 exports increases.Due to when carry out lightening or dimmed operation time, the frequency of the pulse signal of the control signal output OUT output of this touch chip U1 is very high, just corresponding duty ratio is different, thus this triode of control Q1 is exported the pwm signal of corresponding duty ratio to constant current driving unit 52, thus reach the object of the brightness of control LED1.
Particularly, this constant current driving unit 52 comprises constant-current source chip U3.Constant-current source chip U3 comprises the control signal input CON be connected with the collector electrode of triode Q1, and the control end LX be connected with LED1.When touch chip U1 receives switch lamp operational order, touch chip U1, by the voltage signal output pulse signal according to this input, provides operating current with what to control constant-current source chip U3 be LED1.When touch chip U1 receives brightness adjustment operation instruction, touch chip U1 will export the pulse signal of corresponding duty ratio according to the voltage signal of this input, with the pwm signal making PWM unit 51 export corresponding duty ratio, to increase or to reduce the operating current that constant-current source chip U3 provides for LED1.It should be noted that the pulse width signal duty ratio that PWM unit 51 exports is larger, the operating current of LED1 is larger, and so the brightness of LED1 is higher.When user needs to turn down LED1 brightness, then PWM unit 51 reduces the duty ratio of output pulse width signal, to reduce the operating current that constant current driving unit 52 provides for LED1, thus reduces the brightness of LED1.The operation that LED1 brightness dims operates identical with lightening, and the operation principle of turning off the light with turning on light of automobile room lamp is identical, does not repeat them here.
Particularly, in the present embodiment, this LED1 can according to the actual requirements many groups in parallel, and concrete number is in this no limit.
Further, this power module 2 comprises voltage regulation unit U4, input filter unit and output filtering unit, described voltage regulation unit U4 comprises input VIN, output VOUT and earth terminal GND, and the input VIN of described voltage regulation unit U4 is connected with external direct current power supply through described input filter unit as the input of described power module 2; The earth terminal GND ground connection of described voltage regulation unit U4; The output VOUT of described voltage regulation unit U4 is connected through power end VDD, the power end VDD of memory cell U2 of described output filtering unit and described touch chip U1, the power end Vin of constant current driving unit 52; The voltage signal of the output of described external direct current power supply is after described voltage regulation unit U4 process, and output low-voltage dc signal is described touch chip U1, memory cell U2, constant current driving unit 52 provides working power.
Particularly, this input filter unit employing electric capacity C2, C3 are connected in parallel between the input VIN of voltage regulation unit U4 and earth terminal GND and carry out filtering, this output filtering unit can adopt RC filter circuit to realize, by after resistance R4, electric capacity C4 series connection and electric capacity C5 be connected in parallel between output VOUT and earth terminal GND and carry out filtering, thus this power module 2 can realize the direct current signal input of wide region, stable low-voltage dc signal exports.
Further, based on above-described embodiment, LED1 is chip on board packaged light source.Chip on board packaged light source overcomes the shortcoming of automobile room lamp astigmatism ghost image of the prior art.The large sight line of this chip on board light source luminous point is good, do not have ghost image, thus protects the eyes of user better.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (8)

1. an automobile room lamp, comprise for luminescence LED, cover in the lamp housing of this LED outside and the power module of powering for described LED, it is characterized in that, described automobile room lamp also comprises:
Contact, be arranged at described envelope inner surface, for receive user input operational order and according to described operational order output voltage signal;
Touch-control module, receives the voltage signal that described contact exports, and exports control signal according to the voltage signal received; And,
Control module, for receiving the control signal that described touch-control module exports, and controls the operating state of described LED according to this control signal;
Wherein, the input of described touch-control module is connected with described contact, and the output of described touch-control module is connected with the signal input part of described control module, and the output of described control module is connected with described LED.
2. automobile room lamp as claimed in claim 1, it is characterized in that, described contact is the hard contact for responding to static electricity on human body's voltage.
3. automobile room lamp as claimed in claim 1, it is characterized in that, described touch-control module comprises touch chip, the first resistance and the first electric capacity, wherein, described touch chip comprises touching signals input and control signal output, the touching signals input of described touch chip is connected with described contact through the first resistance, node between described touch chip and described first resistance is through described first capacity earth, and the control signal output of described touch chip is connected with the signal input part of described control module.
4. automobile room lamp as claimed in claim 3, it is characterized in that, described touch-control module also comprises the memory cell for storing real-time touching signals, and described memory cell passes through I 2c bus and described touch chip communicate to connect.
5. automobile room lamp as claimed in claim 4, it is characterized in that, described control module comprises PWM unit and constant current driving unit, the input of described PWM unit is connected with the control signal output of described touch chip, the output of described PWM unit is connected with the input of described constant current driving unit, and the output of described constant current driving unit is connected with described LED;
Described touch chip sends a control signal to described PWM unit, the pwm signal that described PWM unit is adjustable according to the control signal output duty cycle of the described touch chip received, described constant current driving unit controls the operating current of described LED to control the operating state of described LED according to described pwm signal.
6. automobile room lamp as claimed in claim 5, it is characterized in that, described PWM unit comprises triode, the second resistance and the 3rd resistance, the base stage of described triode is connected with the control signal output of described touch chip through described second resistance, the emitter of described triode is connected with the output of described power module, the collector electrode of described triode is connected with described one end of 3rd resistance, the input of constant current driving unit, the other end ground connection of described 3rd resistance.
7. automobile room lamp as claimed in claim 5, it is characterized in that, described power module comprises voltage regulation unit, input filter unit and output filtering unit, described voltage regulation unit comprises input, output and earth terminal, and the input of described voltage regulation unit is connected with external direct current power supply through described input filter unit as the input of described power module; The earth terminal ground connection of described voltage regulation unit; The output of described voltage regulation unit is connected through the power end of described output filtering unit and described touch chip, the power end of memory cell, the power end of constant current driving unit; The voltage signal of the output of described external direct current power supply, after described voltage regulation unit process, exports low-voltage dc signal and provides working power for described touch chip, memory cell, constant current driving unit.
8. the automobile room lamp as described in any one of claim 1 to 7, is characterized in that, described LED is chip on board packaged light source.
CN201520191217.5U 2015-03-31 2015-03-31 Automobile room lamp Expired - Fee Related CN204559954U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520191217.5U CN204559954U (en) 2015-03-31 2015-03-31 Automobile room lamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201520191217.5U CN204559954U (en) 2015-03-31 2015-03-31 Automobile room lamp
JP2015002102U JP3198562U (en) 2015-03-31 2015-04-27 Car interior lights

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CN204559954U true CN204559954U (en) 2015-08-12

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Application Number Title Priority Date Filing Date
CN201520191217.5U Expired - Fee Related CN204559954U (en) 2015-03-31 2015-03-31 Automobile room lamp

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CN (1) CN204559954U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113377267A (en) * 2021-08-12 2021-09-10 智己汽车科技有限公司 Brightness regulating method and device for multiple illumination light sources and storage medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113377267A (en) * 2021-08-12 2021-09-10 智己汽车科技有限公司 Brightness regulating method and device for multiple illumination light sources and storage medium
CN113377267B (en) * 2021-08-12 2021-10-29 智己汽车科技有限公司 Brightness regulating method and device for multiple illumination light sources and storage medium

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Granted publication date: 20150812

Termination date: 20170331