CN207752484U - Apparatus for reading of bar code - Google Patents

Abstract

A kind of apparatus for reading of bar code a, including polygonal bodies and multiple bar code reading units；A wherein surface for polygonal bodies is equipped with a first window, another surface is equipped with one second window, bar code reading unit all installs in a room of polygonal bodies, one of bar code reading unit person reads bar code by the second window, and other bar code reading units then read bar code by first window.

Description

Apparatus for reading of bar code

Technical field

The utility model is read about apparatus for reading of bar code, and in particular to having one-dimensional and two-dimensional bar The apparatus for reading of bar code of ability.

Background technology

Bar code can be divided into two major classes：One-dimensional bar code (1D or linear barcode) and two-dimensional bar (2D barcode).One-dimensional bar code, such as：Upc bar code is staggered by the black lines and white space of multiple tracks different in width Data are encoded, representing corresponding letter, number etc..Each peddling commodity posts one-dimensional bar code now, So that commodity are in checkout or each link of supply chain, can be identified soon.

Two-dimensional bar, such as：QR codes (quick response code) use figure and shape (such as hexagon, just Rectangular and point) data are encoded, packing density and capacity directionless and that have bigger than one-dimensional bar code are provided, It can be used for storing forms, word and image data, therefore suitable for storing the favor information of commodity.

The mechanism of barcode reader used in attribution one-dimensional bar code and two-dimensional bar is different, therefore at present on the market It is respectively set to read the scanning machine of one-dimensional bar code and two-dimensional bar more than checkout counter, but causes wire rod to twine in this way The problem of around, power consumption and taking up space.

Secondly, when commodity are settled accounts, commodity can be transferred to the reading of salesman's progress one-dimensional bar code by consumer； This simultaneously, when there is the favor information encoded with two-dimensional bar such as consumer, it is also necessary to will be given with two-dimensional bar Salesman carries out discount；However, as running gear is widely used, the two-dimensional bar for the tool benefit data that businessman is provided It is shown on running gear more；Every time checkout when running gear must all be transferred to salesman carry out two-dimensional bar reading in addition to Cause the inconvenience of both sides outer, it is also possible to running gear be allowed to be damaged in transmittance process because falling.

Utility model content

Described in the prior art, the utility model provides a kind of item for the bar code that at least two different codings can be read Bar code reading device uses upper inconvenience to reduce.

A kind of apparatus for reading of bar code is provided according to the utility model, including a polygonal bodies and multiple bar codes are read Unit；A wherein surface for polygonal bodies is equipped with a first window, and another surface is equipped with one second window；Bar code reads single Member is installed respectively in the room of polygonal bodies；It is read by the second window in one of bar code reading unit above-mentioned person Bar code, and at least one of aforementioned bar code reading unit reads bar code by first window.

Multiple bar code reading units are set to the different surfaces of polygonal bodies by the utility model system, therefore in salesman and are disappeared Bar code is individually saved check-out time by Fei Zheke by peri position in the bar code reading unit of polygon row ontology different surfaces And reduce the inconvenience described in the prior art.

Description of the drawings

Fig. 1 is painted a stereogram of the apparatus for reading of bar code according to the utility model first embodiment；

Fig. 2 is painted another stereogram of the apparatus for reading of bar code according to the utility model first embodiment；

Fig. 3 is painted a stereogram of the first bar code reading unit according to the utility model first embodiment；

Fig. 4 is painted another stereogram of the first bar code reading unit according to the utility model first embodiment；

Fig. 5 is painted a stereogram of the second bar code reading unit according to the utility model first embodiment；

Fig. 6 is painted a stereogram of the apparatus for reading of bar code according to the utility model second embodiment；

Fig. 7 is painted a stereogram of the apparatus for reading of bar code according to the utility model third embodiment；

Fig. 8 is painted the side view diagram of the apparatus for reading of bar code according to the 4th embodiment of the utility model；And

Fig. 9 is painted the side view diagram of the apparatus for reading of bar code according to five embodiment of the utility model younger brother.

Wherein reference numeral is：

1,1a, 1b, 1c, 1d ... apparatus for reading of bar code

10,10a, 10b ... ontology

12 ... first windows

13 ... first transmission elements

14 ... second windows

15 ... second transmission elements

16 ... pivots

18 ... pedestals

19 ... power cords

30,30c, 30d ... bar code read module

32 ... first bar code reading units

320 ... support plates

322 ... laser diodes

324 ... movable reflecting elements

3240 ... reflectings surface

326 ... circular row speculum groups

3260 ... speculums

3262 ... openings

328 ... refractive power microscope groups

3280,3284 ... reflective mirrors

3282 ... spectroscopes

330 ... linear transducers

332 ... convergent lenses

34, the second bar code reading unit of 34_1,34_2 ...

340 ... substrates

342 ... illuminating parts

344 ... surface shape sensors

346 ... light limited parts

3460 ... camera lenses

36 ... engaging members

38 ... Double sided mirrors

Specific implementation mode

Fig. 1 and Fig. 2 is painted the stereogram of the apparatus for reading of bar code according to the utility model first embodiment respectively. In Fig. 1 and Fig. 2, apparatus for reading of bar code 1 includes a polygonal bodies 10 and a bar code read module 30；Polygonal bodies 10 It is internally provided with a room, and secondly surface is formed with the first window 12 and one second window 14 for being communicated in room.In this reality It applies in mode, polygonal bodies 10 are rectangular body, and first window 12 and the second window 14 are formed in 10 long side of polygonal bodies Opposite two surface in direction.

Bar code read module 30 installs in ontology 10, and includes one first bar code reading unit 32 and an Article 2 Shape code reading unit 34.First bar code reading unit 32 is arranged adjacently to first window 12, and can by first window 12 come One-dimensional bar code is read, such as：Upc bar code；Second bar code reading unit 34 is arranged adjacently to the second window 14, passes through Two windows 12 read (one-dimensional bar code or) two-dimensional bar.

Fig. 3 and Fig. 4 is referred to, is read according to the first bar code of the utility model first embodiment Deng being painted respectively The stereogram of unit.In Fig. 3 and Fig. 4, the first bar code reading unit 32 include a support plate 320, a laser diode 322, One movable reflecting element 324, a circular row speculum group 326, a refractive power microscope group 328, a linear transducer 330 and a convergent lens 332。

Support plate 320 can be the printed circuit board for being previously provided with wiring thereon, in addition to can be used for carrying two pole of laser Except pipe 322, movable reflecting element 324, circular row speculum group 326, linear transducer 330 and convergent lens 332, moreover it is possible to will be electric Power passes to laser diode 322, the motor (not shown) that movable reflecting element 324 is connected and linear transducer 330.

Laser diode 322 is set on support plate 320, and for generating the laser read needed for one-dimensional bar code；In this reality It applies in mode, the optical axis of laser diode 322 is parallel to the normal of support plate 320.

Movable reflecting element 324 is set on support plate 320, and bottom is connected with motor, and can under the driving of motor and With predetermined direction (as clockwise) rotation.In the present embodiment, movable reflecting element 324 includes four reflectings surface 3240, the normal of the normals of these reflectings surface 3240 all non-perpendicular to support plate 320, and width is with tapered far from support plate 320, Constituted with cooperation is in four side butt (hollow) pyramids.In actual implementation, movable reflecting element 324 can by three or three with On reflecting surface constitute polygon butt (hollow) pyramid to coordinate.

Circular row speculum group 326 configures between movable reflecting element 324 and refractive power microscope group 328；Circular row speculum group 326 It is made of multiple speculums 3260, the arrangement of these speculums 3260 has the U-shaped of an opening 3262,3262 directions of opening above-mentioned Movable reflecting element 3240.(i.e. speculum 3260 is obliquely non-perpendicular to the normal of support plate 320 for the normal of each speculum 3260 On support plate 320), and width is with cumulative far from support plate 320.Furthermore the bottom of speculum 3260 is (close to support plate 320 Part) come close to can in the projection of support plate 320 compared with its top (part far from support plate 320) in the projection on support plate 320 Dynamic reflecting element 324.

Linear transducer 330 is set on support plate 320, and its optical axis can be with the normal parallel of support plate 320.Convergent lens 332 Mounted on the top of linear transducer 330, image light (referring to aftermentioned) is focused on linear transducer 330.

Refractive power microscope group 328 includes one first reflective mirror 3280, a spectroscope 3282 and one second reflective mirror 3284, and first is anti- Light microscopic 3280, spectroscope 3282 and the second reflective mirror 3284 are according to inclination angle needed for the reflection/transmission angle of laser and image light Degree configuration.In the present embodiment, the configuration of the first reflective mirror 3280 is above laser diode 322, with reflection laser diode 322 laser generated, enable laser to be transferred to spectroscope 3282.Spectroscope 3282 configures 330 top of linear transducer, and Convergent lens 332 is between spectroscope 3282 and linear transducer 330；Spectroscope 3282 is to reflection laser and for image light Pass through.Second reflective mirror 3284 configures on the reflection path of spectroscope 3282, receives the laser that spectroscope 3282 reflects, and lead to Reflection is crossed to allow laser transfer to movable reflecting element 324.

In practical operation, the laser that laser diode 322 is sent out passes through the first reflective mirror 3280, spectroscope in order 3282 and second reflective mirror 3284 reflect after, be transferred to the reflecting surface 3240 of movable reflecting element 324, as shown in Figure 3；Reflecting surface 3240 then reflection lasers, enable laser to be transferred to circular row speculum group 326；The speculum 3260 of circular row speculum group 326 Then reflection laser again, allows laser projection to one-dimensional bar code to illuminate one-dimensional bar code.

One-dimensional bar code can reflect the laser of part to generate image light.Image light projection to circular row speculum group 326, and It is transferred to movable reflecting element 324 after being reflected by the speculum 3260 of circular row speculum group 326, as shown in Figure 4.Image light is then The reflection of reflecting surface 3240 and the second reflective mirror 3284 sequentially through movable reflecting element 324 and be transferred to spectroscope 3282, wear Saturating spectroscope 3282 is simultaneously transferred to convergent lens 332, finally focuses on linear transducer 330, and by linear transducer 330 Or the decoder of linear image sensor 330 is electrically connected to carry out the decoding of one-dimensional bar code data.

Refer to Fig. 5, be painted according to the utility model first embodiment the second bar code reading unit it is one vertical Body figure.Second bar code reading unit 34 reading (one-dimensional bar code and) two-dimensional bar, such as：QR codes.In Figure 5, Second bar code reading unit 34 includes a substrate 340, multiple illuminating parts 342, a surface shape sensor 344 and a smooth limited part 346。

Substrate 340 can be can be to be previously provided with the printed circuit board of wiring thereon, to carry illuminating part 342, Surface shape sensor 344 and light limited part 346, and for transmission electric power to illuminating part 342 and surface shape sensor 344.Substrate 340 can be with One adhesion part (such as：Glue or adhesive tape) to be bonded with support plate 320；Certainly, the components such as screw or trip are also not exclusively by In conjunction with substrate 340 and support plate 320.Herein it should be particularly noted that, support plate 320 and substrate 340 can also be integrated in single plank, example Such as：Double-sided PCB, to achieve the effect that reduce cost.When support plate 320 and substrate 340 can be integrated in single plank, first Bar code reading unit 32 and 34 Central Plains of the second bar code reading unit are configured at individually the component on support plate 320 and substrate 340 Opposite two plate face of single plank can be set to according to former configuration.

Again referring to Fig. 5；Illuminating part 342 and surface shape sensor 344 are respectively arranged on substrate 340, and illuminating part 342 and face shape The optical axis of sensor 344 is parallel to the normal of substrate 340.In the present embodiment, illuminating part 342 surrounds surface shape sensor 344, It uses and provides uniform light to illuminate two-dimensional bar；Illuminating part 342 can be light emitting diode.Light limited part 346 is set to illuminating part Between 342 and surface shape sensor 344, and can by multiple engaging members (such as：Screw) 36 and combined with substrate 340；Face shape passes Sensor is directly entered surface shape sensor 344 with the light being emitted to avoid illuminating part 342 and influences (one-dimensional bar code or) two dimension Bar code reading achievement (such as：Contrast).

Second bar code reading unit 34 also may include a lens 3460, be set to 344 top of surface shape sensor, and to make The light that (one-dimensional bar code or) two-dimensional bar reflection illuminating part 342 is sent out, which is formed by image light and is able to focus on face shape, to be passed Sensor 344.

Again referring to Fig. 1 and Fig. 2, apparatus for reading of bar code 1 can further include one first transmission element 13 and the second transmission element 15；The One transmission element 13 seals first window 12, and the second transmission element 15 seals the second window 14 to provide dust-proof and waterproof effect.In addition, First transmission element 13 and the second transmission element 15 also can be only for the light of specific wavelength by optical filter, use reduction ambient light It influences one-dimensional bar code and two-dimensional bar understands effect.

Apparatus for reading of bar code 1 also may include a pedestal 18 and a conducting wire 19, pedestal 18 by pivot 16 be articulated in The bottom of polygonal bodies 10, conducting wire 19 by external circuit information being transferred to bar code read module 30.Bar code is read Device 1 more may include a buzzer 40, to send out the sound when smoothly reading one-dimensional bar code or two-dimensional bar to prompt Bar code reading is completed in user；In the present embodiment, buzzer 40 is located at polygonal bodies 10 and is equipped with first window 12 Side.

The first bar code has been installed in the polygonal bodies 10 of the apparatus for reading of bar code 1 of the utility model simultaneously and has read list Member 32 and second bar code reading unit 34, and allow 34 direction of the first bar code reading unit 32 and the second bar code reading unit The different direction of polygonal bodies 10 is come the problem of reading bar code, can avoid material winds, power consumption and take up space.

In actual use, apparatus for reading of bar code 10 can be placed on checkout counter, and is suitably configured and makes first Window 12 faces salesman, and the second window 14 faces consumer；When consumer by commodity transfer to salesman carry out one-dimensional bar code reading When taking, (the one-dimensional bar code with favor information on running gear can be shown in read using apparatus for reading of bar code simultaneously Or) two-dimensional bar, thus, just running gear need not be transferred to salesman carry out (one-dimensional bar code or) two-dimensional bar It reads, reduces the probability of running gear damage.

Fig. 6 is painted the stereogram of the apparatus for reading of bar code according to the utility model second embodiment, Fig. 7 be painted according to The stereogram of the apparatus for reading of bar code of the utility model third embodiment.Apparatus for reading of bar code depicted in Fig. 6 and Fig. 7 Similar to the apparatus for reading of bar code depicted in Fig. 1, Deng the difference is that, the first window 12 depicted in Fig. 6 and Fig. 7 And second window 14 is provided at adjacent two surface of polygonal bodies 10a, 10b.

More specifically, it is seen in the front of the first window 12 of apparatus for reading of bar code 1a as shown in Figure 6, the second window 14 be position in the top of polygonal bodies 10a, and the second bar code reading unit 34 is arranged close in the second window 14, to read pendulum It is put in (one-dimensional bar code or) two-dimensional bar of the second window 14.The first window of apparatus for reading of bar code 1b as shown in Figure 7 It is seen in mouthfuls 12 front, and the second window 12 is position on the right side of polygonal bodies 10b, and the setting of the second bar code reading unit 34 is leaned on It is bordering on the second window 14, to read the two-dimensional bar for being placed in the second window 14.Other structures of apparatus for reading of bar code 1a, 1b The function and related description of part, actually identical as apparatus for reading of bar code 1, it will not be described here.Apparatus for reading of bar code 1a, 1b at least can reach function identical with apparatus for reading of bar code 1.

Fig. 8 is painted the side view diagram of the apparatus for reading of bar code according to the 4th embodiment of the utility model.Bar code is read It includes an an ontology 10c and bar code read module 30c to take device 1c；It is formed on ontology 10c and is connected with its internal capacity room First window and the second window, first window and the second window are formed in opposite two surface of ontology 10c.Bar code reads dress The first transmission element 13 of sealing first window, and the second transmission element 15 of the second window of sealing can be further included by setting 1c.

Bar code read module 30 installs in ontology 10c, and includes one first bar code reading unit 32, two Article 2 Shape code reading unit 34_1 and 34_2 and a Double sided mirror 38, Deng through configuration appropriate to allow the first bar code reading unit 32 can read position one-dimensional bar code by first window respectively, and the second bar code reading unit 34_1 can pass through the second window (one-dimensional bar code or) two-dimensional bar is read, the second bar code reading unit 34_2 can read (one-dimensional by first window Bar code or) two-dimensional bar.

In specific words, the second bar code reading unit 34_1 can setting face for the second bar code reading unit 34_2, it is double Face mirror 38 is configured between second bar code reading unit 34_1,34_2, and is located at second bar code reading unit 34_1,34_2 Light transmission path on, to change light direction of transfer.

In the present embodiment, the first bar code reading unit 32 is identical to first described in preceding first embodiment Bar code reading unit 32, second bar code reading unit 34_1,34_2 can be identical to the institute in preceding first embodiment respectively The second bar code reading unit 34 stated.

In fig. 8, a wherein plate face for the support plate 320 of the first bar code reading unit 34 carries as shown in Figures 3 and 4 Laser diode 322, movable reflecting element 324, circular row speculum group 326, refractive power microscope group 328, linear transducer 330 and convergence Lens 332, another plate face is for the second bar code reading unit 34_1 of configuration and Double sided mirror 38.

Second bar code reading unit 34_1,34_2 can separately include substrate 340 shown in fig. 5, illuminating part 342, face shape Sensor 344 and light limited part 346.In the second bar code reading unit 34_1, light that illuminating part 342 is sent out passes through two-sided (one-dimensional bar code or) two-dimensional bar, (one-dimensional item are projected to after a wherein mirror-reflection for mirror 38 by the second transmission element 15 Shape code or) light that sends out of two-dimensional bar reflection illuminating part 342 is formed by image light then sequentially by the second transmission element 15 and Double sided mirror 38 after enter surface shape sensor 344.In the second bar code reads single original 34_2, light that illuminating part 324 is sent out (one-dimensional bar code or) two-dimensional bar is transferred to after another mirror-reflection that line passes through Double sided mirror 38 by the first transmission element 13, The light that (one-dimensional bar code or) two-dimensional bar reflection illuminating part 342 is sent out be formed by image light then sequentially by first thoroughly Enter surface sensor 344 after light part 13 and Double sided mirror 38.In the ontology 10c of the barcode reader 1c of present embodiment simultaneously The first bar code reading unit 32 and multiple second bar code reading unit 34_1,34_2 have been installed, and the second bar code is allowed to read Unit 34_1,34_2 are taken towards the different direction of ontology 10c to read (one-dimensional bar code and) two-dimensional bar, use can be increased Convenience.

Fig. 9 is painted the side view diagram of the apparatus for reading of bar code according to the 5th embodiment of the utility model.Depicted in Fig. 9 Barcode reader be similar to Fig. 8 depicted in barcode reader, Deng the difference is that, bar shaped depicted in Fig. 9 Code reader only includes second bar code reading unit 34_1,34_2.

More specifically, the apparatus for reading of bar code 1d depicted in Fig. 9 includes an ontology 10 and a bar code read module 30d, bar code read module 30d include two second bar code reading units 34_1,34_2 and a Double sided mirror 38.Bar shaped Code read module 30d is installed in ontology 10c, one second faces bar code reading unit 34_1 in bar code read module 30d Wherein minute surface configuration to Double sided mirror 38, another second bar code reading unit 34_2 match in face of another minute surface of Double sided mirror 38 It sets；In other words, Double sided mirror 38 is allowed to be located on the optical path of second bar code reading unit 34_1,34_2.Bar code reads mould The second bar code reading unit 34_2 by the second window 14 by reading (one-dimensional bar code or) two dimension one of in block 30d Bar code, and another second bar code reading unit 34_1 is (one-dimensional by the first window reading for being sealed with the first transmission element 13 Bar code or) two-dimensional bar.In the present embodiment, second bar code reading unit 34_1,34_2 can be identical to respectively The second bar code reading unit 34 described in preceding first embodiment.The ontology 10 of the barcode reader 1d of present embodiment In install two second bar code reading units 34_1,34_2 simultaneously, and be respectively facing the different direction of ontology 10 to read (one Tie up bar code and) two-dimensional bar, increase ease of use.

Although the utility model is disclosed above with embodiment, so it is not limited to the utility model, any ripe This those skilled in the art is practised, without departing from the spirit and scope of the utility model, when can be used for a variety of modifications and variations, therefore this practicality Novel protection domain should be defined by the scope of the appended claims.

Claims (15)

1. a kind of apparatus for reading of bar code, which is characterized in that include：

One polygonal bodies, are internally provided with a room, and a wherein surface for the polygonal bodies is equipped with a first window, Ling Yibiao Face is equipped with one second window；And

Multiple bar code reading units are installed respectively in the room,

Wherein, one of the multiple bar code reading unit person reads bar code, the multiple bar shaped by second window At least one of code reading unit then reads bar code by the first window.

2. apparatus for reading of bar code as described in claim 1, which is characterized in that the first window and second window are set to and are somebody's turn to do Adjacent two surface of polygonal bodies.

3. apparatus for reading of bar code as described in claim 1, which is characterized in that the first window and second window are set to Opposite two surface of the polygonal bodies.

4. apparatus for reading of bar code as claimed in claim 2 or claim 3, which is characterized in that the multiple bar code takes the unit to include One first bar code reading unit and one second bar code reading unit, first bar code reading unit pass through the first window One-dimensional bar code is read, which reads one-dimensional or two-dimensional bar by second window.

5. apparatus for reading of bar code as claimed in claim 3, which is characterized in that the multiple bar code reading unit includes two Second bar code reading unit, one of them second bar code reading unit read one-dimensional or two-dimentional bar shaped by the first window Code, another second bar code read one-dimensional or two-dimensional bar by second window.

6. apparatus for reading of bar code as claimed in claim 5, which is characterized in that further include a Double sided mirror, install in the room In, one of described two second bar code reading units person configures in face of a wherein minute surface for the Double sided mirror, another Article 2 Shape code reading unit is configured in face of an other minute surface for the Double sided mirror.

7. apparatus for reading of bar code as claimed in claim 3, which is characterized in that it includes one that the multiple bar code, which takes unit, One bar code reading unit and 2 second bar code reading units, first bar code reading unit and second bar code are read One of unit person reads bar code by the first window, is read by second window in another second bar code reading unit Take bar code.

8. apparatus for reading of bar code as claimed in claim 7, which is characterized in that further include a Double sided mirror, install in the room In, one of first bar code reading unit and second bar code reading unit person face wherein the one of the Double sided mirror Minute surface configures, and another second bar code reading unit is configured in face of an other minute surface for the Double sided mirror.

9. apparatus for reading of bar code as claimed in claim 7, which is characterized in that

First bar code reading unit includes：

One linear transducer；

One laser diode generates a laser；

One movable reflecting element is rotated with scheduled direction；And

One circular row speculum group, take the shape of the letter U arrange and with towards the movable reflecting element an opening, the movable reflecting element and Circular row speculum group cooperation makes the laser transfer to one-dimensional bar code, and one-dimensional bar code is made to reflect the laser and be formed One image light is able to be transferred to the linear transducer；

Second bar code reading unit includes：

One surface shape sensor；

Multiple illuminating parts, around the surface shape sensor, the optical axis of the surface shape sensor is parallel to the optical axis of the respectively illuminating part；And

One smooth limited part, the light sent out to avoid illuminating part between the surface shape sensor and the multiple illuminating part are straight It taps into the surface shape sensor, for the light which generates to illuminate two-dimensional bar, two-dimensional bar reflects the light The image spectrum that line generates is transferred to the surface shape sensor.

10. apparatus for reading of bar code as claimed in claim 9, which is characterized in that first bar code reading unit further includes：

One support plate, the laser diode, the linear transducer, the movable reflecting element and the circular row speculum group are respectively arranged on this On support plate；

One spectroscope is set to above the linear transducer；

One first reflective mirror is set to above the laser diode；And

One second reflective mirror is set to above the spectroscope,

Wherein, the laser diode generate the laser according to via first reflective mirror, the spectroscope, second reflective mirror, The reflection of the movable reflecting element and the circular row speculum group and be projected to one-dimensional bar code, the image light is sequentially via the circular row Speculum group, the movable reflecting element and second reflective mirror reflection and be transferred to the light splitting part, and penetrate the spectroscope biography It is handed to the linear transducer.

11. apparatus for reading of bar code as claimed in claim 10, which is characterized in that further include a convergent lens, be set to this point Between light microscopic and the linear transducer, which is focused on into the linear transducer.

12. apparatus for reading of bar code as claimed in claim 9, which is characterized in that second bar code reading unit further includes One camera lens is configured at the top of the surface shape sensor, the illuminating part generate the light to illuminate bar code, the camera lens to The image light is focused on into the surface shape sensor.

13. apparatus for reading of bar code as claimed in claim 12, which is characterized in that second bar code reading unit more wraps Contain：

One substrate, the multiple illuminating part and the surface shape sensor are respectively arranged on the substrate；And

Multiple engaging members, the light limited part are combined by the multiple engaging member with the substrate.

14. apparatus for reading of bar code as described in claim 1, which is characterized in that further include：

One first transmission element, seals the first window；And

One second transmission element seals second window.

15. apparatus for reading of bar code as claimed in claim 4, which is characterized in that further include：

One pedestal, the polygonal bodies are articulated in the pedestal；And

One buzzer is set to the polygonal bodies and suitable in first bar code reading unit or second bar code reading unit Profit sends out the sound when reading bar code.