CN214125336U - Light filling cell-phone protective housing of shooing - Google Patents
Light filling cell-phone protective housing of shooing Download PDFInfo
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- CN214125336U CN214125336U CN202022775125.5U CN202022775125U CN214125336U CN 214125336 U CN214125336 U CN 214125336U CN 202022775125 U CN202022775125 U CN 202022775125U CN 214125336 U CN214125336 U CN 214125336U
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- main controller
- field effect
- output end
- pwm signal
- light
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- 230000001681 protective effect Effects 0.000 title claims abstract description 17
- 230000005669 field effect Effects 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 14
- 230000001502 supplementing effect Effects 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000009469 supplementation Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 12
- 239000013589 supplement Substances 0.000 description 6
- 230000001052 transient effect Effects 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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Abstract
The utility model relates to a cell-phone protective housing technical field discloses a prefabricated light supplementation source and uses convenient light filling cell-phone protective housing of shooing, possesses: the back of the middle plate is provided with at least two groups of LED lamps, a switch button and a main control circuit board; the main control circuit board comprises a charging circuit, a main controller and a switch circuit; the charging circuit is connected with the USB port and used for receiving a power supply input by the USB port; the power supply input end of the main controller is connected with the output end of the charging circuit, and one control end of the main controller is connected with one end of the switch button; an input end of the switch circuit is coupled with a PWM signal output end of the main controller; the other input end of the switch circuit is coupled with the other PWM signal output end of the main controller; the output end of the switch circuit is electrically connected with the LED lamps respectively, and the switch button controls the main controller to correspondingly output PWM signals so as to control the working states of the LED lamps respectively.
Description
Technical Field
The utility model relates to a cell-phone protective housing technical field, more specifically say, relate to a light filling cell-phone protective housing of shooing.
Background
When the mobile phone takes a picture and self-timer, the picture taking and self-timer effect of the mobile phone is influenced due to different brightness of the external environment. When the mobile phone does not supplement light and completely depends on the flash lamp to supplement light, the shooting and self-shooting effects are poor, and therefore light supplement needs to be carried out on the mobile phone. When the mobile phone flash lamp is used for light supplement, the effect of picture shooting is not ideal enough due to poor light supplement effect.
Therefore, how to improve the shooting effect of mobile phone shooting and self-shooting becomes a technical problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned cell-phone flash light that uses of prior art carries out the light filling, because the effect of light filling is not good, the not ideal enough defect of effect that leads to taking the picture provides a prefabricated light supplement source and uses convenient light filling cell-phone protective housing of shooing.
The utility model provides a technical scheme that its technical problem adopted is: construct a light filling cell-phone protective housing of shooing, possess:
the front end of the rear cover is of an inwards concave structure, the middle part of the rear cover is provided with an annular light-transmitting groove, and the bottom side of the light-transmitting groove is provided with a through hole;
the front end of the middle plate is formed into an inwards concave structure, and the inwards concave side of the middle plate is used for placing a mobile phone;
the back of the middle plate is provided with at least two groups of LED lamps, a switch button and a main control circuit board;
one LED lamp is embedded into the light transmission groove, the other LED lamp is arranged at the upper end and the lower end of the back of the middle plate, and the switch button is arranged in the through hole;
the main control circuit board comprises a charging circuit, a main controller and a switch circuit;
the charging circuit is connected with the USB port and used for receiving a power supply input by the USB port;
the power supply input end of the main controller is connected with the output end of the charging circuit, and one control end of the main controller is connected with one end of the switch button;
an input end of the switching circuit is coupled to a PWM signal output end of the main controller;
the other input end of the switch circuit is coupled to the other PWM signal output end of the main controller;
the output end of the switch circuit is electrically connected with the LED lamps respectively, and the switch button controls the main controller to correspondingly output PWM signals so as to control the working states of the LED lamps respectively.
In some embodiments, the switching circuit includes a first field effect transistor and a second field effect transistor,
the grid electrode of the first field effect transistor is connected with a PWM signal output end of the main controller, and the drain electrode of the first field effect transistor is connected with one end of an LED lamp;
and the grid electrode of the second field effect tube is connected with the other PWM signal output end of the main controller, and the drain electrode of the second field effect tube is connected with one end of the other LED lamp.
In some embodiments, the switching circuit further comprises a fourth resistor and a fifth resistor,
one end of the fourth resistor is connected with a PWM signal output end of the main controller, and the other end of the fourth resistor is connected with the grid electrode of the first field effect transistor;
one end of the fifth resistor is connected with the other PWM signal output end of the main controller, and the other end of the fifth resistor is connected with the grid electrode of the second field effect transistor.
In some embodiments, the first and second fets are N-channel enhancement mode fets.
In some embodiments, the charging circuit comprises a charging identification controller, a power supply input of the charging identification controller is connected with the USB port,
and the power output end of the charging identification controller is respectively connected with the power input end of the main controller and the other end of the LED lamp.
In some embodiments, the charging circuit further comprises a second capacitor and a third capacitor,
and one end of the second capacitor and one end of the third capacitor are connected with the power output end of the charging identification controller.
The light-supplementing camera mobile phone protective shell of the utility model comprises a rear cover and a middle plate, wherein the main control circuit board comprises a charging circuit, a main controller and a switch circuit; an input end of the switch circuit is coupled with a PWM signal output end of the main controller; the other input end of the switch circuit is coupled with the other PWM signal output end of the main controller; the output end of the switch circuit is electrically connected with the LED lamps respectively, and the switch button controls the main controller to correspondingly output PWM signals so as to control the working states of the LED lamps respectively. Compared with the prior art, through the master controller respectively output PWM signal, this PWM signal controls two sets of LED lamps respectively through switch circuit and switches on to satisfy needs and carry out the light filling to the cell-phone, the LED lamp output light source on the cell-phone shell is predetermine to the accessible, in order to solve and use the cell-phone flash light to carry out the light filling, because the effect of light filling is not good, leads to the not ideal problem of effect of taking the picture inadequately.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a perspective view of an embodiment of a light supplementing camera phone protective case of the present invention;
fig. 2 is a perspective view of another embodiment of the light supplementing camera phone protective case of the present invention;
fig. 3 is an exploded view of an embodiment of the light supplementing camera phone protective case of the present invention;
fig. 4 is an exploded view of another embodiment of the light supplementing camera phone protective case of the present invention;
fig. 5 is an exploded view of yet another embodiment of a light supplementing camera phone protective case;
fig. 6 is an exploded view of another embodiment of the light supplementing camera phone protective case of the present invention;
fig. 7 is a circuit schematic diagram of an embodiment of a master control circuit board.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 7, in the first embodiment of the light-supplementing camera phone protection case of the present invention, the light-supplementing camera phone protection case 10 includes a rear cover 101 and a middle plate (102 and 103).
Specifically, the front end of the rear cover 101 is formed in a concave structure, and a light transmission groove 101b having a ring shape is formed at a middle portion of the rear cover 101, wherein a through hole 101a is formed at a bottom side of the light transmission groove 101b, and the middle plates (102 and 103) are placed in the concave of the rear cover 101.
Specifically, the front ends of a middle plate (102 and 103) are formed as concave structures, and the concave sides of the middle plates (102 and 103) are used for placing the mobile phone 20.
At least two groups of LED lamps and a switch button 102b are arranged on the back of the middle plates (102 and 103)1And a main control circuit board 102 b.
Wherein one LED lamp is embedded into the light-transmitting groove 101b, the other LED lamp is arranged at the upper end and the lower end of the back of the middle plates (102 and 103), and the switch button 102b1Is disposed in the through-hole 101a of the rear cover 101.
The main control circuit board 102b (corresponding to 100 in fig. 7) includes a charging circuit 101, a main controller U101, and a switching circuit 102.
Specifically, the charging circuit 101 is connected to the USB port for receiving power input from the USB port.
The power input terminal (corresponding to VDD terminal) of the master controller U101 is connected with the output terminal (corresponding to 5 pins) of the charging circuit 101, and a control terminal (corresponding to PA7/X1 terminal) of the master controller U101 is connected with the switch button 102b1(corresponding to SW101 in FIG. 7) has one end connected to switch button 102b1The other end of the first and second terminals is connected to a common terminal.
In addition, the switch knob 102b1Is provided with a transient suppression diode TVS2, wherein, when two poles of a transient suppression diode TVS2 are subjected toWhen the high-energy impact is carried out in a reverse transient state, the high-energy impact protection circuit can change the high impedance between the two poles of the high-energy impact protection circuit into low impedance at the speed of 10-12 seconds, absorb surge power at the two ends, clamp the voltage between the two poles at a preset value and effectively protect the main controller U101 from being damaged by various surge pulses.
Specifically, an input terminal of the switch circuit 102 is coupled to a PWM signal output terminal (corresponding to pin 7) of the master U101, and is configured to receive a PWM signal (Pulse Width Modulation) output by the master U101.
The other input terminal of the switching circuit 102 is coupled to another PWM signal output terminal (corresponding to pin 5) of the master U101, and is configured to receive another PWM signal output by the master U101.
Further, the output end (corresponding to 4 pins) of the switch circuit 102 is electrically connected to the LED lamps (corresponding to P101 and P102) respectively, and is connected to the LED lamps through the switch button 102b1The control master controller U101 correspondingly outputs PWM signals so as to respectively control the working states of the LED lamps.
Specifically, the one-time pressing of the switch button 102b1So that a PWM signal output by the main controller U101 is at a high level, and an LED lamp (corresponding to P101) is triggered to conduct, that is, the LED lamps (corresponding to P101) disposed at the upper end and the lower end of the back of the middle plates (102 and 103) are triggered to conduct;
push the switch button 102b again1Meanwhile, another PWM signal output by the main controller U101 is at a high level, and another LED lamp (corresponding to P102) is triggered to be turned on, that is, the LED lamp (corresponding to P102) embedded in the light-transmitting groove 101b is turned on.
When closed, the switch button 102b is pressed once more1The LED lamp (corresponding to P101 and P102) can be turned off.
Long-press switch button 102b1The brightness of the LED lamp (corresponding to P101 and P102) can be adjusted.
Use this technical scheme, export the PWM signal respectively through master controller U101, this PWM signal controls two sets of LED lamps respectively through switch circuit 101 and switches on to satisfy needs and carry out the light filling to the cell-phone, the LED lamp output light source on the cell-phone shell is established in advance to the accessible, in order to solve and use the cell-phone flash light to carry out the light filling, because the effect of light filling is not good, leads to the not ideal problem of effect of taking the picture inadequately.
In some embodiments, in order to improve the convenience of the on-state of the LED lamp (corresponding to P101 and P102), a first fet VT101 and a second fet VT102 may be disposed in the switch circuit 102, wherein the first fet VT101 and the second fet VT102 are N-channel enhancement fets and both have a switching function.
Specifically, the gate of the first field effect transistor VT101 is connected to a PWM signal output terminal (corresponding to pin 7) of the master controller U101, the drain of the first field effect transistor VT101 is connected to one end of an LED lamp (corresponding to pin P101), and the first field effect transistor VT101 is configured to control an operating state of the LED lamp (corresponding to pin P101).
The grid of the second field effect transistor VT102 is connected with another PWM signal output end (corresponding to 5 pins) of the master controller U101, the drain of the second field effect transistor VT102 is connected with one end of another LED lamp (corresponding to P102), and the second field effect transistor VT102 is used for controlling the working state of another LED lamp (corresponding to P102).
In some embodiments, in order to improve the stability of the operation of the first fet VT101 and the second fet VT102, a fourth resistor R104, a fifth resistor R105, a sixth resistor R106, and a seventh resistor R107 may be disposed in the switching circuit 102, and the resistors have voltage dividing and current limiting functions.
One end of the fourth resistor R104 is connected to a PWM signal output end (corresponding to pin 7) of the master controller U101, the other end of the fourth resistor R104 is connected to the gate of the first fet VT101 and one end of the sixth resistor R106, respectively, and the other end of the sixth resistor R106 is coupled to the source of the first fet VT 101. That is, one path of PWM signal output by the master controller U101 is input to the gate of the first field effect transistor VT101 through the fourth resistor R104, and is used to control the first field effect transistor VT101 to be turned on or off.
Furthermore, one end of the fifth resistor R105 is connected to another PWM signal output end (corresponding to the 5-pin) of the master U101, the other end of the fifth resistor R105 is connected to the gate of the second field-effect transistor VT102 and one end of the seventh resistor R107, respectively, and the other end of the seventh resistor R107 is connected to the source of the second field-effect transistor VT 102. That is, the other path of PWM signal output by the master U101 is input to the gate of the second fet VT102 through the fifth resistor R105, and is used to control the second fet VT102 to be turned on or off.
In some embodiments, in order to ensure the stability of the operation of the main control circuit board 102b, a charging identification controller U102 may be disposed in the charging circuit 101, wherein the charging identification controller U102 has integrated trickle, constant current and constant voltage three-stage linear charging management, and conforms to the lithium battery charging specification. The charging input can directly take electricity from the USB port, the charging current is as high as 1.2A, and the charging input can be configured through an off-chip resistor.
The charging identification controller U102 integrates a backflow prevention circuit, and automatically cuts off a current path of a battery backflow chip after an input voltage is pulled out or even short-circuited, and only consumes the maximum power consumption of 1 muA from the battery at the moment.
The charging identification controller U102 also integrates constant temperature charging, i.e. a compromise between chip temperature and charging current, effectively protecting the chip from overheating damage. Meanwhile, the chip supports the NTC detection of the battery temperature, the outside of the battery temperature detection point can be adjusted, and when the temperature is outside an allowable charging temperature range, the charging is stopped.
Specifically, a power input end (corresponding to 4 pins) of the charging identification controller U102 is connected to the USB port, and a power output end of the charging identification controller U102 is connected to the power input end (corresponding to 1 pin) of the main controller U101 and the other end of the LED lamp (corresponding to P101 and P102), respectively.
The LED lamps (corresponding to P101 and P102) correspond to 102a and 102c in fig. 6, and P101 corresponds to 102a and P102 corresponds to 102 c.
In some embodiments, the charging circuit 101 further includes a second capacitor C102 and a third capacitor C103, which have a filtering function.
Specifically, one end of the second capacitor C102 and one end of the third capacitor C103 are connected to the power output end (corresponding to the 5 pins) of the charging identification controller U102, and the other end of the second capacitor C102 and the other end of the third capacitor C103 are connected to the common end.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (6)
1. The utility model provides a light filling cell-phone protective housing of shooing, its characterized in that possesses:
the front end of the rear cover is of an inwards concave structure, the middle part of the rear cover is provided with an annular light-transmitting groove, and the bottom side of the light-transmitting groove is provided with a through hole;
the front end of the middle plate is formed into an inwards concave structure, and the inwards concave side of the middle plate is used for placing a mobile phone;
the back of the middle plate is provided with at least two groups of LED lamps, a switch button and a main control circuit board;
one LED lamp is embedded into the light transmission groove, the other LED lamp is arranged at the upper end and the lower end of the back of the middle plate, and the switch button is arranged in the through hole;
the main control circuit board comprises a charging circuit, a main controller and a switch circuit;
the charging circuit is connected with the USB port and used for receiving a power supply input by the USB port;
the power supply input end of the main controller is connected with the output end of the charging circuit, and one control end of the main controller is connected with one end of the switch button;
an input end of the switching circuit is coupled to a PWM signal output end of the main controller;
the other input end of the switch circuit is coupled to the other PWM signal output end of the main controller;
the output end of the switch circuit is electrically connected with the LED lamps respectively, and the switch button controls the main controller to correspondingly output PWM signals so as to control the working states of the LED lamps respectively.
2. The light supplementing camera phone case of claim 1,
the switch circuit comprises a first field effect transistor and a second field effect transistor,
the grid electrode of the first field effect transistor is connected with a PWM signal output end of the main controller, and the drain electrode of the first field effect transistor is connected with one end of an LED lamp;
and the grid electrode of the second field effect tube is connected with the other PWM signal output end of the main controller, and the drain electrode of the second field effect tube is connected with one end of the other LED lamp.
3. The light supplementing camera phone case of claim 2,
the switch circuit further comprises a fourth resistor and a fifth resistor,
one end of the fourth resistor is connected with a PWM signal output end of the main controller, and the other end of the fourth resistor is connected with the grid electrode of the first field effect transistor;
one end of the fifth resistor is connected with the other PWM signal output end of the main controller, and the other end of the fifth resistor is connected with the grid electrode of the second field effect transistor.
4. A light-supplementing photo-phone protective case according to claim 2 or 3,
the first field effect transistor and the second field effect transistor are N-channel enhanced field effect transistors.
5. The light supplementing camera phone case of claim 1,
the charging circuit comprises a charging identification controller, the power input end of the charging identification controller is connected with the USB port,
and the power output end of the charging identification controller is respectively connected with the power input end of the main controller and the other end of the LED lamp.
6. The light supplementing camera phone case of claim 5,
the charging circuit further comprises a second capacitor and a third capacitor,
and one end of the second capacitor and one end of the third capacitor are connected with the power output end of the charging identification controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022775125.5U CN214125336U (en) | 2020-11-26 | 2020-11-26 | Light filling cell-phone protective housing of shooing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022775125.5U CN214125336U (en) | 2020-11-26 | 2020-11-26 | Light filling cell-phone protective housing of shooing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214125336U true CN214125336U (en) | 2021-09-03 |
Family
ID=77507251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022775125.5U Expired - Fee Related CN214125336U (en) | 2020-11-26 | 2020-11-26 | Light filling cell-phone protective housing of shooing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214125336U (en) |
-
2020
- 2020-11-26 CN CN202022775125.5U patent/CN214125336U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |