CN102546877B - A kind of mobile phone with flashlight function - Google Patents
A kind of mobile phone with flashlight function Download PDFInfo
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- CN102546877B CN102546877B CN201210064897.5A CN201210064897A CN102546877B CN 102546877 B CN102546877 B CN 102546877B CN 201210064897 A CN201210064897 A CN 201210064897A CN 102546877 B CN102546877 B CN 102546877B
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Abstract
The invention discloses a kind of mobile phone with flashlight function, it comprises phone housing, and the top of described phone housing is provided with holding tank, in described holding tank, be provided with at least one LED chip, the described holding tank notch being positioned at described LED chip front is provided with lens; Be provided with the control circuit run for controlling LED chip in described mobile phone, described control circuit is connected with described LED chip circuit.The top that LED chip is arranged on phone housing by the present invention replaces being arranged on phone housing side or frame mode below, from making, the flashlight function of mobile phone is more convenient, expand the application space of mobile phone, save the inner space of mobile phone, reduce the manufacturing cost of mobile phone, avoid the situation occurring the non-constant damage LED chip of electric current.
Description
Technical field
The present invention relates to a kind of mobile phone, particularly relate to a kind of mobile phone with flashlight function.
Background technology
LED flashlight function is applied now more and more general on mobile phone, its have energy-conservation, highlighted, the life-span is long, easy to carry, low cost etc. a little.Current, adopt and have two kinds of modes can realize embedded in mobile phone LED flashlight: special Flash LED chip and simple Lamp LED chip.
Most of LED flashlight is same class chip with camera flashlamp, and need with larger drive current and more expensive photoflash lamp driving chip, general device is at the mobile phone back side.Special Flash LED photoflash lamp and special photoflash lamp driving chip high due to price, cause the manufacturing cost having increased substantially mobile phone.
Simple Lamp LED luminance is high, but size is all larger, general diameter 3mm to 5mm, and present handset size is pursued more and more thinner, and due to the restriction of structure, Lamp LED chip easily takies space larger on mobile phone, affects the layout of mobile phone.
As can be seen here, prior art needs further to improve and develop.
Summary of the invention
The present invention provides a kind of mobile phone with flashlight function for solving above-mentioned defect of the prior art, to expand the application space of mobile phone, makes mobile phone layout more reasonable.
For solving the problems of the technologies described above, the present invention program comprises:
A kind of mobile phone with flashlight function, it comprises phone housing, wherein, the perimeter sides of described phone housing is provided with holding tank, be provided with the LED chip of at least one side luminescence in described holding tank, the described holding tank notch being positioned at described LED chip front be provided with one for the lens of optically focused; Be provided with the control circuit run for controlling LED chip in described mobile phone, described control circuit is connected with described LED chip circuit.
Described mobile phone, wherein, described control circuit is arranged on the printed circuit board (PCB) of described mobile phone, is controlled the operation of described LED chip by the baseband chip of described mobile phone.
Described mobile phone, wherein, described control circuit is arranged on one independently on printed circuit board (PCB), for controlling the operation of described LED chip.
Described mobile phone, wherein, described control circuit is constant-current control circuit, and it comprises driving chip and flashlight power line, and described flashlight power line is connected with described driving chip circuit, and described driving chip is connected with described LED chip circuit.
Described mobile phone, wherein, described driving chip adopts CAT4002 driving chip, and described CAT4002 driving chip is connected with described torch power circuit, the analog to digital converter of described CAT4002 driving chip is connected with a non-essential resistance circuit, and described non-essential resistance is connected with ground wire.
Described mobile phone, wherein, described driving chip adopts the chip with following functions: when described flashlight power line is low level, described LED chip is in closed condition; When described flashlight power line is high level, described LED chip is in illuminating state.
Described mobile phone, wherein, the circuit of described LED chip comprises one and pre-sets the control chip controlling LED chip operating instruction, described control chip is also provided with multiple LED chip connecting pin, if only connect a LED chip, then remaining LED chip connecting pin is left a blank setting.
The invention provides a kind of mobile phone with flashlight function, LED chip is arranged on phone housing side to replace being arranged on phone housing side or frame mode below, from making, the flashlight function of mobile phone is more convenient, expand the application space of mobile phone, especially the LED chip of at least one side luminescence is provided with in holding tank, and holding tank is arranged on the shell of mobile phone, save the inner space of mobile phone, control LED chip by control circuit to open or close, while being convenient for users to operate, make mobile phone layout more reasonable, LED chip is used alone a control circuit, thus the constant-current driven chip of low cost can be selected, reduce the manufacturing cost of mobile phone, situation about simultaneously it also avoid because of the non-constant damage LED chip of electric current occurs.
Accompanying drawing explanation
Fig. 1 is that in the present invention, LED chip is arranged on the structural representation on shell.
Fig. 2 is the cross-sectional view along A-A direction in Fig. 1.
Fig. 3 is the structural representation assembled in the present invention.
Fig. 4 is that in the present invention, LED chip is connected directly between the electrical block diagram on printed circuit board (PCB).
Fig. 5 is the structural representation that in the present invention, LED chip is connected to LED chip circuit board.
Fig. 6 is the light effect schematic diagram of LED chip test in the present invention.
Fig. 7 is the lamp Illumination Distribution schematic diagram of LED chip test in the present invention.
Fig. 8 is the circuit diagram of driving chip in the present invention.
Embodiment
The invention provides a kind of mobile phone with flashlight function, in order to make object of the present invention, technical scheme and advantage clearer, clear and definite, below with reference to accompanying drawing and embodiment, the present invention is described in more detail.
The present invention is with the mobile phone of flashlight function, and as shown in Figures 1 and 2, it comprises phone housing 101, and described phone housing 101 can adopt technology type well known in the prior art.And the perimeter sides of the top of described phone housing 101, bottom or side is provided with holding tank 102, the LED chip 103 of at least one side luminescence is provided with in described holding tank 102, the LED chip 103 of this side luminescence is fixed on LED chip circuit board 203, on shell 101, the opening of holding tank 102 is arranged, the LED chip of two or three side luminescences can be set as required in described holding tank 102, to increase brightness.On described holding tank 102 notch, be positioned at the front of described LED chip 103, be provided with lens 201, described lens 201 are provided with the edge part for assembling in both sides, convex lens are set in central authorities, to realize the spotlight effect of the LED chip light-emitting line of offside luminescence, as shown in Figure 2.
The control circuit run for controlling this LED chip 103 is provided with in described mobile phone, described control circuit is by LED chip circuit realiration as shown in Figure 4, this LED chip circuit comprises one and pre-sets the control chip 401 controlling LED chip operating instruction, described control chip 401 is also provided with multiple LED chip connecting pin 402, as only connected a LED chip, then remaining LED chip connecting pin 402 is left a blank setting, by control chip 401 for described LED chip 103 provides electric current, electric current controls by software adjustment, does not repeat them here.
LED chip circuit of the present invention can be arranged on the printed circuit board (PCB) 202 of described mobile phone, the one LED chip circuit board that also independently can arrange between described LED chip 103 and the printed circuit board (PCB) 202 of described mobile phone, as shown in Figure 2, independently LED chip circuit board 203 is set and can improves control treatment ability to LED chip 103, and better heat-sinking capability, described LED chip circuit board 203 can be arranged on the printed circuit board (PCB) 202 of described mobile phone, be connected with described LED chip 103 circuit, also independently circuit board can be set to as required, to adjust the placement location of LED chip, make the irradiating angle of LED chip rationally more scientific.Described lens 201 arrange the structure of adaptive described holding tank 102, and have the edge extended to both sides, can be used for being snapped within described holding tank 102.
As shown in Figure 3, its structure is simple, improve the utilance in mobile phone space for the Simple assembled figure of said structure.In preferred embodiment of the present invention, described control circuit (comprising control chip 401) can be set directly on the printed circuit board (PCB) 202 of described mobile phone, by the function setting of control chip 401 in the baseband chip of mobile phone, control the operation of the LED chip 103 of described side luminescence, can by controlling functions by software design patterns in " additional function " menu, then controlled by the baseband chip of described mobile phone.In the outside of described LED chip 103, described lens 201 are also set near described LED chip 103, particularly according to the region of required illumination, the shape of described lens 201 is set, the general collector lens adopting hemisphere or analogous shape.
In another preferred embodiment of the present invention, as shown in Figure 5, described control circuit is constant-current control circuit, it comprises driving chip 501 and flashlight power line 502, described flashlight power line 502 is connected with described driving chip 501 circuit, and described driving chip 501 is connected with described LED chip 103 circuit.
In the further preferred embodiment of the present invention, described driving chip 501 can adopt CAT4002 driving chip, as shown in Figure 5, described CAT4002 driving chip is connected with described torch power line 502, the digital to analog converter DAC503 of described CAT4002 driving chip is connected with non-essential resistance 504 circuit, described non-essential resistance 504 is connected with ground wire, and then adjusts the output current of described CAT4002 driving chip.Described LDE lamp current is as shown in table 1 with the corresponding numerical value of described non-essential resistance 504.
Table 1
| The electric current (mA) of LED chip | Non-essential resistance (k) |
| 2 | 37.4 |
| 5 | 14.7 |
| 10 | 7.50 |
| 15 | 4.99 |
| 20 | 3.74 |
| 25 | 3.00 |
| 30 | 2.49 |
Described driving chip 501 specifically connects as shown in Figure 8, and described driving chip 501 provides two-way or four paths of LEDs drive currents, and the voltage input pin of described driving chip 501 is directly connected to battery of mobile phone or platform base band output voltage source.Wherein LED1 to LED4 is the electric current output pin of outside 4 paths of LEDs lamps, connects the negative electrode of 4 LED respectively.4 LED paths are controlled by 4 constant-current sources respectively, and electric current accurately still can be kept when guaranteeing that driving voltage changes in the range of nominal tension to export.Pressure drop during constant-current source work is 75mV, adds the electric conduction pressure drop of each LED self, if the input voltage of voltage input pin is less than 2V, the electric current that under-voltage locking can close each LED output channel exports, thus described driving chip 501 is closed.Described non-essential resistance 504 is used for arranging the maximum current of every paths of LEDs path, described LED chip 103 passes through enable pin and the single line programming pin of each LED, LED is made to have 32 grades of dimming functions, serial line interface is used for the number of rising pulses of counting, pulse number is preserved in a register, and regulated the output current of LED by digital to analog converter 503, and the logic high of enable pin and single line programming pin and logic low are respectively 1.3V and 0.4V.If enable pin and single line programming pin remain logic high always, each LED passage current exports and opens, and LED chip 103 output current is maximum, and LED brightness is the highest.When enable pin and single line programming pin are logic low, each LED passage current exports closes, and described driving chip 501 is closed.
Further, in present pre-ferred embodiments, described driving chip 501 is also set there is following functions: when described flashlight power line 502 is for low level, described LED chip 103 is in closed condition; When described flashlight power line 502 is high level, described LED chip 103 is in illuminating state.Obviously according to user's needs, can also be carried out other to the level of described flashlight power line 502 and specifically define, will not enumerate at this.
In the mobile device of band flashlight function of the present invention, its specific experiment measure of merit is described as follows: in measuring distance: 1 meter, side-emitting LED chip size: 2.8W*1.2D*0.8Tmm, LED drive current: 25mA, center origin light intensity: 5.9Lux, Test coverage area: test under 925*500mm condition, field of illumination as shown in Figure 6, can obtain ideal illuminating effect.Carry out equiluminous analysis, as shown in Figure 7, the distribution of light intensity result is very reasonable, and can provide enough light sources in the environment of dark, play the effect of flashlight, its distribution values is as shown in table 2 simultaneously.
Table 2
| Coordinate points | X-coordinate (unit: millimeter) | Y-coordinate (unit: millimeter) | Light intensity (unit: Lux) |
| a | 0 | 0 | 5.9 |
| b | -364 | 0 | 3.3 |
| c | 364 | 0 | 2.7 |
| d | 0 | -578 | 2.5 |
| e | 578 | 0 | 2.1 |
| f | -364 | 578 | 1.6 |
| g | 364 | 578 | 1.4 |
| h | -364 | -578 | 1.6 |
| j | 364 | -578 | 1.6 |
Should be understood that; the above-mentioned description for preferred embodiment is comparatively detailed; therefore the restriction to scope of patent protection of the present invention can not be thought; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that the claims in the present invention protect; can also make the various deformation such as replacement, simple combination, these all fall within protection scope of the present invention, and request protection range of the present invention should be as the criterion with claims.
Claims (2)
1. the mobile phone with flashlight function, it comprises phone housing, it is characterized in that, the perimeter sides of described phone housing is provided with holding tank, be provided with the LED chip of at least one side luminescence in described holding tank, the described holding tank notch being positioned at described LED chip front be provided with one for the lens of optically focused; Be provided with the control circuit run for controlling LED chip in described mobile phone, described control circuit is connected with described LED chip circuit;
On the printed circuit board (PCB) that described control circuit is arranged on mobile phone or on one independently printed circuit board (PCB), for controlling the operation of described LED chip; The operation of described LED chip is controlled by the baseband chip of described mobile phone; Described control circuit is constant-current control circuit, and it comprises driving chip and flashlight power line, and described flashlight power line is connected with described driving chip circuit, and described driving chip is connected with described LED chip circuit;
The controlling functions of described control circuit by software design patterns in " additional function " menu;
Described driving chip adopts CAT4002 driving chip, and described CAT4002 driving chip is connected with described torch power circuit, and the analog to digital converter of described CAT4002 driving chip is connected with a non-essential resistance circuit, and described non-essential resistance is connected with ground wire;
Described non-essential resistance is used for arranging the maximum current of every paths of LEDs path, described LED chip passes through enable pin and the single line programming pin of each LED, LED is made to have 32 grades of dimming functions, serial line interface is used for the number of rising pulses of counting, pulse number is preserved in a register, and regulated the output current of LED by digital to analog converter, and the logic high of enable pin and single line programming pin and logic low are respectively 1.3V and 0.4V;
When enable pin and single line programming pin remain logic high always, each LED passage current exports and opens, and LED chip output current is maximum, and LED brightness is the highest; When enable pin and single line programming pin are logic low, each LED passage current exports closes, and described driving chip is closed;
The circuit of described LED chip comprises one and pre-sets the control chip controlling LED chip operating instruction, described control chip is also provided with multiple LED chip connecting pin, if only connect a LED chip, then remaining LED chip connecting pin is left a blank setting.
2. mobile phone according to claim 1, is characterized in that, described driving chip adopts the chip with following functions: when described flashlight power line is low level, described LED chip is in closed condition; When described flashlight power line is high level, described LED chip is in illuminating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210064897.5A CN102546877B (en) | 2012-03-13 | 2012-03-13 | A kind of mobile phone with flashlight function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210064897.5A CN102546877B (en) | 2012-03-13 | 2012-03-13 | A kind of mobile phone with flashlight function |
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| Publication Number | Publication Date |
|---|---|
| CN102546877A CN102546877A (en) | 2012-07-04 |
| CN102546877B true CN102546877B (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210064897.5A Active CN102546877B (en) | 2012-03-13 | 2012-03-13 | A kind of mobile phone with flashlight function |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118681Y (en) * | 2007-09-10 | 2008-09-17 | 深圳市龙腾远创通讯科技有限公司 | Mobile phone with lighting function |
| CN201608751U (en) * | 2010-03-02 | 2010-10-13 | 郝德胜 | Mobile phone with glare light electric torch |
| CN102055824A (en) * | 2011-01-18 | 2011-05-11 | 深圳市盛讯达科技发展有限公司 | Mobile phone illuminating system |
-
2012
- 2012-03-13 CN CN201210064897.5A patent/CN102546877B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201118681Y (en) * | 2007-09-10 | 2008-09-17 | 深圳市龙腾远创通讯科技有限公司 | Mobile phone with lighting function |
| CN201608751U (en) * | 2010-03-02 | 2010-10-13 | 郝德胜 | Mobile phone with glare light electric torch |
| CN102055824A (en) * | 2011-01-18 | 2011-05-11 | 深圳市盛讯达科技发展有限公司 | Mobile phone illuminating system |
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| CN102546877A (en) | 2012-07-04 |
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