CN204290928U - A kind of infrared touch switch module and with its range hood - Google Patents
A kind of infrared touch switch module and with its range hood Download PDFInfo
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- CN204290928U CN204290928U CN201520015766.7U CN201520015766U CN204290928U CN 204290928 U CN204290928 U CN 204290928U CN 201520015766 U CN201520015766 U CN 201520015766U CN 204290928 U CN204290928 U CN 204290928U
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Abstract
The utility model discloses a kind of infrared touch switch module and the range hood with it, infrared touch switch module is fixed on the fuselage of range hood, infrared touch switch module comprises control substrate, infrared-emitting diode, infrared receiver transducer and filter, described infrared-emitting diode is positioned at the outside of the endface position of filter, the luminous energy that infrared-emitting diode sends incides in filter, infrared receiver transducer is at filter and control between substrate, and the photosurface of infrared receiver transducer is towards filter side.The utility model can reduce infrared light loss on the one hand, can strengthen finger touch and the degree distinguished without infrared receiver sensor output value during finger touch on the other hand, thus improves touch sensitivity and the antijamming capability of infrared touch switch.The utility model realizes the touch control to range hood based on optical principle, and relative to traditional mechanical switch and electronic touch type switch, surface is easier to clean, longer service life, relative to capacitative touch switch, affect less by oil stain is water stain, reliability is higher.
Description
Technical field
The utility model relates to kitchen guarding's technical field of electric appliances, particularly a kind of infrared touch switch module and the range hood with it.
Background technology
The control switch of existing range hood mainly contains: mechanical type keyboard switch, soft-touch type electronic switch and capacitative touch switch.
Mechanical type keyboard switch, on the one hand because comparatively large with the fit clearance of fuselage, is difficult to clean, attractive in appearance not, and pressing feel is not good and operation noise is comparatively large, and integrated operation experience sense is poor; On the other hand because wear and tear comparatively large in use procedure, easily by the impact of the damp and hot fatty environment in kitchen, useful life is shorter.
Soft-touch type electronic switch, relative to mechanical type keyboard switch, pressing feel promotes to some extent, operation noise makes moderate progress, useful life also extends greatly, but still there is poorly sealed problem, and greasy dirt easily causes malfunctioning switch after infiltrating from installation gap and is difficult to clean.
Capacitative touch switch, usually be arranged on after a monolithic glass or acrylic, solve preferably mechanical type keyboard switch and soft-touch type electronic switch fit clearance large, be difficult to the problem that cleans, outward appearance, feel and useful life promote all to some extent, but because its work is based on the weak capacitive change produced during electrical conductivity object (such as finger) touch sensible electrode, when external environment condition changes greatly when water stain (such as panel or finger are stained with oil stain), easily lost efficacy.
Existing a kind of range hood, forms the infrared induction district of aliging in the horizontal direction with icon, to be reached through the object that infrared induction controls range hood in icon front by photoelectric conversion device.But, because its infrared signal generator and infrared signal receiver are in the same direction, infrared light loss is comparatively large, and finger touch to key area and close to but when not touching key area the differentiation of infrared signal receiver output signal not obvious, there is the problem of easy misoperation.
Existing another kind of range hood, on front side of range hood, rear surface arranges a wide-angle camera, the visual angle of camera covers all shift knob patterns, the light in the real-time capture button region of camera changes and draws button actions signal by the mode of image procossing, and then controls range hood.But complex structure, with high costs and software program is too complicated, realizability is poor.
Summary of the invention
The purpose of this utility model is consider the problems referred to above and provide a kind of infrared light to lose little, to reduce misoperation infrared touch switch module.
In order to arrive above-mentioned purpose, the technical solution adopted in the utility model is: a kind of infrared touch switch module, comprise and control substrate, infrared-emitting diode, infrared receiver transducer and filter, described infrared-emitting diode is positioned at the outside of the endface position of filter, the luminous energy that infrared-emitting diode sends incides in filter, infrared receiver transducer is at filter and control between substrate, and the photosurface of infrared receiver transducer is towards filter side.
In such scheme, the infrared light that infrared-emitting diode sends is from the surface feeding sputtering of filter in filter, during without finger touch filter surface, infrared light is propagated by total internal reflection in filter inside, and infrared light loses little and only has a small amount of Infrared irradiation on infrared receiver transducer; When having finger touch, in the region of finger touch, infrared light total internal reflection is suppressed and produces diffuse reflection, a large amount of Infrared irradiation is on infrared receiver transducer, now the output valve of infrared receiver transducer obviously can make a distinction with output valve when not having finger touch filter, reach minimizing infrared light lose and strengthen finger touch and the degree distinguished without infrared receiver sensor output value during finger touch, thus improve touch sensitivity and the antijamming capability of infrared touch switch module, reduce the problem of misoperation.
The infrared light sent for making infrared-emitting diode enters filter inside as much as possible, above-mentioned infrared-emitting diode is arranged on and controls on substrate, and the light emission direction of infrared-emitting diode is vertical with the end face of filter and parallel with the photosurface of infrared receiver transducer.
For making infrared touch switch module more compact structure, install mutual crosstalk that is more convenient and that reduce between different key region as far as possible, above-mentioned infrared receiver transducer is flaky texture, infrared receiver transducer comprises substrate and is positioned at on-chip electrode and photosensitive area, photosensitive area is positioned at the side of corresponding filter on substrate, and substrate is fixed on by electroconductive binder and controls on substrate.
Further, the infrared light sent for making infrared-emitting diode enters filter inside as much as possible, and above-mentioned filter is the thickness 1mm≤d≤5mm of the end face polishing of glass material or acrylic material, filter, filter.
Further, little in order to reduce infrared light loss, the surface of the side that above-mentioned filter is corresponding relative with infrared receiver transducer present position is posted filter coating or is printed on nontransparent ink.
For making the performance extremely preferably state of infrared touch switch module, the scope of the operation wavelength λ of above-mentioned infrared-emitting diode, infrared receiver transducer and filter is consistent.
Further, the operating wavelength range of above-mentioned infrared-emitting diode, infrared receiver transducer and filter is 750nm≤λ≤950nm.Preferably, wavelength X is 850nm.
For improving infrared light utilance, above-mentioned infrared-emitting diode and infrared receiver transducer control on edge the direction of substrate surface is arranged in a linear.
Above-mentioned infrared-emitting diode has several, and infrared-emitting diode lays respectively at the outside of the endface position at the two ends of filter.Adopt multiple infrared-emitting diode can improve infrared light intensity and then promote the Operational Figure Of Merit of infrared touch switch module.
Another object of the present utility model is to provide a kind of range hood reducing misoperation, comprises fuselage, and described fuselage is provided with above-mentioned infrared touch switch module.
Infrared-emitting diode is arranged on and controls on substrate and be positioned at filter end by the utility model, its light emission direction is vertical with filter end face and parallel with infrared receiver sensor photosensitive face, not only reduce infrared light loss, and increasing has finger touch and the degree distinguished without infrared receiver sensor output value during finger touch, thus improve touch sensitivity and the antijamming capability of infrared touch switch module, reduce the problem of misoperation.Relative to traditional mechanical switch and electronic touch type switch, surface is easier to clean, longer service life, and relative to capacitative touch switch, affect less by oil stain is water stain, reliability is higher.
Accompanying drawing explanation
The utility model above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the utility model embodiment one infrared touch switch module end view, and dotted line represents light path;
Fig. 2 is the utility model embodiment one infrared touch switch module vertical view;
Fig. 3 is the cutaway view of Fig. 2 along A-A direction;
Fig. 4 is the utility model embodiment infrared receiver transducer front view;
Fig. 5 is the cutaway view of Fig. 4 along B-B direction;
Fig. 6 is the general view of the utility model embodiment range hood;
Fig. 7 is the cutaway view of Fig. 6 along C-C direction;
Fig. 8 is the utility model embodiment two infrared touch switch module end view, and dotted line represents light path;
Reference numeral:
Fuselage 1, infrared touch switch module 2, finger 3, control substrate 21, infrared-emitting diode 22, infrared receiver transducer 23, filter 24, electroconductive binder 211, electrode 231, photosensitive area 232, plastic substrate 233 and icon 241.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but execution mode of the present utility model is not limited to this.In description of the present utility model, it will be appreciated that, if have term " on ", D score, "left", "right", " vertically ", the orientation of the instruction such as " level " or position relationship be for based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the term describing position relationship in accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
Embodiment one:
The structural representation of the utility model range hood is as shown in Fig. 1 ~ 7, comprise fuselage 1 and infrared touch switch module 2, described infrared touch switch module 2 is fixed by screws on fuselage 1, and described infrared touch switch module 2 comprises control substrate 21, infrared-emitting diode 22, infrared receiver transducer 23 and filter 24.
Above-mentioned infrared-emitting diode 22 is arranged on and controls on substrate 21 and be positioned at the outside of the endface position of filter 24, the luminous energy that infrared-emitting diode 22 sends incides in filter 24, infrared receiver transducer 23 is at filter 23 and control between substrate 21, and the photosurface of infrared receiver transducer 23 is towards filter 24 side.Preferably, the light emission direction of infrared-emitting diode 22 is vertical with the end face of filter 24 and parallel with the photosurface of infrared receiver transducer 23.Adopt this structure, when not having finger 3 to touch filter 24 surface, infrared light is propagated by total internal reflection in filter 24 inside, and infrared light loses little and only has a small amount of Infrared irradiation on the photosurface of infrared receiver transducer 23; When having finger 3 to touch, in the region that finger 3 touches, infrared light total internal reflection is suppressed and produces diffuse reflection, a large amount of Infrared irradiation is on the photosurface of infrared receiver transducer 23, and output valve when now the output valve of infrared receiver transducer 23 can touch filter 24 with not having finger 3 obviously makes a distinction.Infrared light can be reduced like this lose and the degree distinguished strengthening infrared receiver transducer 23 output valve when finger 3 touches and do not have finger 3 to touch, thus improve touch sensitivity and the antijamming capability of infrared touch switch module 2.
Preferably, above-mentioned infrared receiver transducer 23 is adopted flaky texture and is arranged on by electroconductive binder 211 and controls on substrate 21.Make infrared touch switch module more compact structure like this, mutual crosstalk that is more convenient and that as far as possible reduce between different key region is installed.Laminar infrared receiver transducer 23 mainly comprises plastic substrate 233 and the electrode 231 that is positioned on plastic substrate 233 and photosensitive area 232, photosensitive area 232 is positioned at the side of corresponding filter 24 on plastic substrate 233, the photosurface of infrared receiver transducer 23 is arranged in photosensitive area 232, and electrode 231 is connected with the Copper Foil controlled on substrate 21 by electroconductive binder 211.
For reducing visible ray to the interference of infrared touch switch module 2, the present embodiment select can through required infrared light but can filtering the overwhelming majority other light filter 24, filter 24 can select glass material or acrylic material to make, the end face polishing of filter 24, it is inner that the infrared light sent for making infrared-emitting diode 22 enters filter 24 as much as possible, the thickness of filter 24 is chosen as close to or is greater than infrarede emitting diode 22 luminous element diameter, thickness 1mm≤d≤the 5mm of filter 24, as preferably, it is 3mm that the present embodiment chooses filter 24 thickness d.
For making the performance extremely preferably state of infrared touch switch module 2, the scope of the operation wavelength λ of infrared-emitting diode 22, infrared receiver transducer 23 and filter 24 is consistent, and 750nm≤λ≤950nm, as preferably, the present embodiment wavelength X is chosen for 850nm.
For improving infrared light utilance, infrared-emitting diode 22 and infrared receiver transducer 23 control on edge the direction on substrate 21 surface is arranged in a linear, an infrarede emitting diode 22 can be realized like this and join one or two and above infrared receiver transducer 23, the present embodiment infrared-emitting diode 22 quantity is one, and the quantity of infrared receiver transducer 23 is three.
For clearly indicating the position of touch key-press, icon 241 is provided with on filter 24 surface, icon 241 is carved by silk-screen, mould, engraving etches or bonding method is located on the fuselage 1 near filter 24 surface or filter 24, and the touch key-press position on touch filter 24 surface can realize the control to range hood.
Embodiment two:
Infrared touch switch module 2 structural representation that the utility model range hood comprises as shown in Figure 8, be with the difference of embodiment one: above-mentioned filter 24 is that transparent glass material or acrylic material are made, the surface of the side that filter 24 is corresponding relative with infrared receiver transducer 23 present position is posted filter coating or is printed on nontransparent ink.The quantity of above-mentioned infrared-emitting diode 22 is two, and two infrared-emitting diodes 22 lay respectively at the outside of the endface position at filter 24 two ends, and two infrared-emitting diodes 22 and infrared receiver transducer 23 control on edge the direction on substrate 21 surface is arranged in a linear, when infrared touch soft-touch control assembly 2 size is long, number of keys is many time, use two or more infrared-emitting diode 22 can improve infrared light intensity and then promote the Operational Figure Of Merit of infrared touch switch module 2.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalency thereof.
Claims (10)
1. an infrared touch switch module, comprise and control substrate (21), infrared-emitting diode (22), infrared receiver transducer (23) and filter (24), it is characterized in that: described infrared-emitting diode (22) is positioned at the outside of the endface position of filter (24), the luminous energy that infrared-emitting diode (22) sends incides in filter (24), infrared receiver transducer (23) is positioned at filter (24) and controls between substrate (21), and the photosurface of infrared receiver transducer (23) is towards filter (24) side.
2. infrared touch switch module according to claim 1, it is characterized in that: described infrared-emitting diode (22) is arranged on and controls on substrate (21), and the light emission direction of infrared-emitting diode (22) is vertical with the end face of filter (24) and parallel with the photosurface of infrared receiver transducer (23).
3. infrared touch switch module according to claim 1, it is characterized in that: described infrared receiver transducer (23) is flaky texture, infrared receiver transducer (23) comprises substrate (233) and the electrode (231) that is positioned on substrate (233) and photosensitive area (232), photosensitive area (232) is positioned at the side of the upper corresponding filter (24) of substrate (233), and substrate (233) is fixed on by electroconductive binder (211) and controls on substrate (21).
4. infrared touch switch module according to claim 1, is characterized in that: described filter (24) is glass material or acrylic material, the end face polishing of filter (24), the thickness 1mm≤d≤5mm of filter (24).
5. infrared touch switch module according to claim 4, is characterized in that: the surface of the side that described filter (24) is corresponding relative with infrared receiver transducer (23) present position is posted filter coating or is printed on nontransparent ink.
6. the infrared touch switch module according to any one of claim 1 to 5, is characterized in that: the scope of the operation wavelength λ of described infrared-emitting diode (22), infrared receiver transducer (23) and filter (24) is consistent.
7. infrared touch switch module according to claim 6, is characterized in that: the operating wavelength range of described infrared-emitting diode (22), infrared receiver transducer (23) and filter (24) is 750nm≤λ≤950nm.
8. infrared touch switch module according to claim 6, is characterized in that: described infrared-emitting diode (22) and infrared receiver transducer (23) control on edge the surperficial direction of substrate (21) is arranged in a linear.
9. infrared touch switch module according to claim 8, is characterized in that: described infrared-emitting diode (22) has several, and infrared-emitting diode (22) lays respectively at the outside of the endface position at the two ends of filter (24).
10. a range hood, comprises fuselage (1), it is characterized in that: described fuselage (1) is provided with the infrared touch switch module described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520015766.7U CN204290928U (en) | 2015-01-09 | 2015-01-09 | A kind of infrared touch switch module and with its range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520015766.7U CN204290928U (en) | 2015-01-09 | 2015-01-09 | A kind of infrared touch switch module and with its range hood |
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| Publication Number | Publication Date |
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| CN204290928U true CN204290928U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520015766.7U Active CN204290928U (en) | 2015-01-09 | 2015-01-09 | A kind of infrared touch switch module and with its range hood |
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| CN (1) | CN204290928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518771A (en) * | 2015-01-09 | 2015-04-15 | 广东海信家电有限公司 | Infrared touch switch assembly and range hood with same |
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- 2015-01-09 CN CN201520015766.7U patent/CN204290928U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518771A (en) * | 2015-01-09 | 2015-04-15 | 广东海信家电有限公司 | Infrared touch switch assembly and range hood with same |
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