JP2580128Y2 - Bar code reader reading confirmation device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar code reader for reading a bar code symbol described on a bar code label, and more particularly to a bar code reader reading confirming device capable of confirming the completion of a reading operation by illuminating light. It is about.

[0002]

2. Description of the Related Art As a bar code reader for optically reading a bar code symbol, a hand-held type shown in FIGS. 3 and 4 is known. This barcode reader is
Light source 10 using an LED or the like that emits light of a predetermined wavelength
0 and the bar code label 1 emitted from the light source 100
A reading optical system including an imaging lens 102 for forming an image of the reading light reflected at 01 on a light receiving element 103 described below, and a light receiving element 103 using a charge-coupled element or the like is provided. The read signal to be read is the main substrate 1
After being electrically processed by a microprocessor 105 or the like mounted on the device 04, the data is output to a host computer (not shown).

Further, the bar code reader is provided with a lamp 108 as a display means for displaying the end of the reading operation and confirming the operation by an operator. , Microprocessor 10
In response to an output signal from 5 or the like, the lamp 108 is lit to notify the user.

[0004]

Since the lamp for confirmation is provided on the main substrate 104 on the surface opposite to the space where the reading optical system is provided, the light of the lamp is read. It does not adversely affect the optical path of the optical system. However, even with the lamp provided in such an arrangement, the light of the lamp to be turned on is reflected and scattered in the casing and reaches the optical path of the reading optical system, and the reading light is disturbed to cause a reading error or the like. There is a fear.

Further, separately from the above-mentioned structure, that is, as shown in FIG.
For the type placed on the lower (abdominal) side of the
When the lamp 108 is mounted on the main board 104, the external light that enters the inside through the display window 107A of the casing 107, and further, the light from the lamp 108 directly affects the optical path of the reading optical system. Is in question. In view of the above circumstances, the present invention has an object to provide a bar code reader reading confirmation device in which light or external light from a lamp of a display means does not adversely affect a reading optical system. is there.

[0006]

That is, the bar code reader of the present invention has a reading optical system for reading information described on a bar code label, and a light for illuminating the completion of the bar code label reading operation. A bar code reader provided with a display means for confirming in step (a), a light blocking means for preventing light from the display means from entering the optical path of the reading optical system.

In the bar code reader reading confirmation device of the present invention, a light-shielding cylinder is integrally provided as a light-shielding means on a part of the casing of the bar-code reader, and the substrate is arranged so as to abut the bottom of the light-shielding cylinder. Further, the lamp is mounted on the substrate in such a state that the lamp of the display means is arranged in the light-shielding cylinder.

[0008]

In the invention according to the first aspect, the lamp of the display means is shielded from the optical path of the reading optical system by the light shielding means, so that the lighting light of the lamp can be confirmed only from outside the casing of the bar code reader. I have.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 and 2 show a reading confirmation device of a bar code reader according to the present invention. The reading confirmation device includes a light shielding tube 11 formed in a part of a casing 1 of a bar code reader, and a display means of a display means. The lamp 2 is mounted on the substrate 3 in a state where the lamp 2 is provided. Reference numeral 4 denotes a light emitting diode (LED) serving as a light source, 5 denotes a plane mirror, 6 denotes an imaging lens, and 7 denotes a charge-coupled device (CCD) as a light receiving element. Make up the system.

The casing 1 has a light shielding tube 11 formed by integral molding, and the upper surface of the substrate 3 abuts the bottom surface of the light shielding tube 11. The light from the lamp 2 is efficiently applied to the casing 1 on the inner peripheral surface of the light shielding tube 11.
In order to emit the light to the outside, for example, a thin film for increasing the reflectance may be applied, or mirror processing with less unevenness may be applied. In addition, it is preferable that a transparent cover 12 made of a material having high transmittance is attached to a window above the light-shielding cylinder 11 so that dust and the like do not enter the cylinder.

The lamp 2 comprises a socket 3 mounted on a substrate 3
1 so that it can be easily attached and detached when it is replaced due to a failure or the like. Substrate 3
Various electrical components (not shown) such as a microprocessor for inputting a signal output from the charge-coupled device (CCD) 7 and performing required signal processing to read information recorded on the barcode label 8 are mounted. . Note that the signal processing circuit including the microprocessor and the like includes a barcode label 8
When the barcode symbol recorded in the lamp 2 is accurately read, a predetermined signal is output to turn on the lamp 2 for a certain period of time.

[0012]

As described above, according to the reading confirmation apparatus of the bar code reader according to the invention, the light shielding means for preventing the light from the display means from entering the optical path of the reading optical system is provided. Even if the reading operation of the bar code label is performed during the lighting operation by the display means,
Problems such as reading errors caused by light from the display means can be eliminated, and a highly reliable barcode reader can be provided.

[Brief description of the drawings]

FIG. 1 is a side sectional view illustrating a reading confirmation device of a bar code reader according to the present invention.

FIG. 2 is an optical path diagram in a bar code reader to which a reading confirmation device is attached.

FIG. 3 is a side sectional view showing a conventional bar code reader.

FIG. 4 is an optical path diagram in the bar code reader.

FIG. 5 is a side sectional view showing another conventional bar code reader.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Lamp (display means) 3 Substrate 4 Light emitting diode (light source) 7 Charge-coupled element (light receiving element)

Claims (2)

(57) [Scope of request for utility model registration] 1. A bar code reader comprising: a reading optical system for reading information described on a bar code label; and display means for confirming completion of the reading operation of the bar code label with light for lighting. A reading confirmation device for a bar code reader, comprising: a light shielding means for preventing light from the means from entering the optical path of the reading optical system. 2. A light-shielding tube is integrally provided as a light-shielding means on a part of a casing of a bar code reader, and a substrate is arranged so as to abut against a bottom surface of the light-shielding tube. The reading confirmation device for a bar code reader according to claim 1, wherein the lamp is mounted on the substrate in a state where the lamp is arranged.