JP2005228602A - Punch mark lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a punch mark lighting system lighting a punch-mark object wherein a punched mark is formed to easily read the punched mark. <P>SOLUTION: This punch mark lighting system lighting the punch-mark object wherein the punched mark is formed comprises a light source 9, a holding means 7 holding the punch-mark object 1 so that a surface in which the punched mark 1a of the punch-mark object 1 is formed crosses with an optical axis 13 of the light emitted from the light source 9 and a cover means 5 covering the holding means 7 and the light source 9 for blocking external light other than the light from the light source 9, and having an opening 11 to see the punched mark 1a of the punch-mark object 1. The holding means 7 holds the punch-mark object 1 in the light source 9 or the cover means 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a marking illumination device for irradiating light to a marking object on which a marking is formed.

  Standards such as capacity, rating, safety standards, etc. are usually displayed on the surface of the electronic parts such as resistors and fuses by letters and abbreviations. When these standards are stamped on the metal surface of the electronic component, the standard is read by the shadow of the light irradiated on the electronic component. Such a standard is read when, for example, an electronic component of a predetermined standard is attached to an electronic device in a production line, and an operator visually reads the standard of the electronic component by stamping. When it is difficult to read the stamp, the worker responds by individually devising the direction of the electronic component and the viewing angle.

  However, when the stamp stamped on the electronic component is read, the stamp may be very difficult to read depending on the shape and material of the stamped portion, the style of the lighting fixture, and the installation position. For example, if the standard is stamped on the surface of a metal or the like that has high light reflectivity or the surrounding environment is reflected, the stamped portion of the stamp and the metal surface are reflected by reflected light or reflection. It is difficult to read the stamp. In addition, the stamp is relatively small, and it is more difficult to read the stamp in a working environment such as an insufficient amount of light or non-homogeneous ambient light. Therefore, it takes a long time to read the stamp, and reading errors of the stamp are likely to occur. In particular, when the metal surface on which the stamp is formed has a curved surface, external light on the metal surface and reflection of the surrounding environment become more prominent, and reading time and reading errors increase.

  Although it is conceivable to improve the lighting environment such as the style of the lighting fixtures, it is costly to change to a lighting environment in which the stamp is easy to read.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a marking illumination device that makes it easy to read a stamp by irradiating the stamped object on which the stamp is formed with light.

  In order to solve the above-mentioned problem, the first invention of the present application is a marking illuminating device for irradiating a stamped object on which a stamp is formed, wherein a light source and the stamp of the stamped object are formed. Holding means for holding the marking object so that the surface and the optical axis of the light emitted from the light source intersect, covering the holding means and the light source, blocking outside light other than light from the light source, Cover means having an opening for visually recognizing the stamped object, and the holding means provides a marking illumination device for holding the stamped object on the light source or the cover means.

  The stamped object to which the stamp is attached is held by the holding means, and light is irradiated to the stamped object from the light source. Here, the marking object is held so that the optical axis of the light emitted from the light source intersects the surface on which the marking of the marking object is formed. At this time, since the shadow is generated by the light reflected on the groove portion of the stamp and the light reflected on the surface on which the stamp is formed, the stamp can be easily visually recognized. Further, since the external light is blocked by the cover means, the external light on the surface of the stamped object and the reflection of the surrounding environment are reduced, and the visibility of the stamped mark can be improved. In particular, when the portion of the object to be engraved is a curved surface, the reflection on the curved surface is remarkable, so that the reflection can be effectively reduced by the cover means.

  The above-mentioned stamp illumination device is compact and excellent in portability because the elements necessary for confirming the stamp are integrally formed. By using such a marking illumination device, the visibility of the stamp can be improved at a low cost without changing the illumination environment of the marking object. Moreover, since it is easy to confirm the stamp, the burden on the confirmer can be reduced.

  A second invention of the present application provides the marking illumination device according to the first invention of the present application, wherein an incident angle of light from the light source to the surface on which the stamped object is formed is less than 90 °. Since light is irradiated from an oblique direction to the surface on which the stamp mark is formed, there is a clear light shadow due to the light reflected on the groove portion of the stamp mark and the light reflected on the surface on which the stamp mark is formed. As a result, the stamp can be easily visually confirmed.

  A third invention of the present application provides the stamp illumination device according to the first invention of the present application, wherein the stamp is formed by a groove having an inclination in the depth direction.

  Since the groove portion of the stamp mark has an inclination, the reflection direction of the light reflected by the groove portion of the stamp mark is different from the reflection direction of the light reflected by the surface on which the stamp mark is formed. Therefore, the shadow of the light is clearly generated by the reflected light in the groove portion of the stamp and the reflected light on the surface on which the stamp is formed, and the stamp can be easily visually recognized.

  4th invention of this application is stamped illumination which is attached to the said holding means in the 1st invention of this application, and further includes first switch means for emitting light from the light source when the object to be stamped is held by the holding means. Providing equipment.

  When the marking object is held by the holding means, light is emitted from the light source to the marking object by the first switch means. For example, when light is emitted from the light source due to the contact between the metal marking object and the first switch means, it is possible to save the time required for the confirmer to irradiate the marking object with light. Therefore, it is possible to easily confirm the stamp.

  A fifth invention of the present application provides the marking illumination device according to the fourth invention of the present application, further comprising second switch means for manually controlling light from the light source. Since the light from the light source can be manually controlled ON / OFF, the light can be stably supplied by the second switch means even when the light control by the first switch means is not complete.

  A sixth invention of the present application provides the marking illumination device according to the first invention of the present application, wherein the holding means is a cylindrical transparent acrylic resin plate. For example, when confirming the stamping of a cylindrical marking object such as a fuse, the marking object can be easily fixed to the light source by introducing the marking object into a cylindrical resin plate. Further, since it is a transparent resin plate, it is possible to check the stamped mark while holding the fuse by the holding means.

  A seventh invention of the present application provides the marking illumination device according to the first invention of the present application, wherein the cover means is formed of a black antireflection material. Since the cover means is formed from an anti-reflective agent, reflection of external light and the surrounding environment is reduced. Further, since it is black, the contrast with the reflected light is clear, and the stamp is easy to read.

  The eighth invention of the present application provides a marking illumination device according to the first invention of the present application, further comprising a reversing / enlarging means that is attached so as to correspond to the opening and that reverses and / or enlarges the stamp of the marking object. The stamp can be reversed and / or enlarged by a reversing / enlarging means attached to the opening. Therefore, by reversing the characters of the stamp in accordance with the direction of the stamp, the stamp can be easily read. Moreover, it becomes easy to read a small stamp mark easily and accurately. Here, the inversion includes inversion in which the up and down directions are switched by rotating on a plane, or conversion for obtaining an inverted image, in which both up and down and left and right are switched.

<First embodiment>
FIG. 1 is a perspective view of a marking illumination device according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the marking illumination device shown in FIG. The marking illumination device 100 for irradiating the marking object 1 having the stamp 1a formed on the surface thereof shown in the first embodiment has a lamp unit 3 having a light source 9 for emitting light and an opening 11 formed therein. And holding means 7 for aligning the marking object 1 with respect to the optical axis of the light emitted from the cover portion 5 and the light source 9. The lamp unit 3, the cover part 5, and the holding means 7 are combined with each other in the following manner to form a marking illumination device. As shown in FIG. 2, when the marking object 1 is inserted and held in the holding means 7, the optical axis 13 of the light emitted from the light source 9 of the lamp unit 3 intersects the surface of the marking object 1. That is, the light from the light source 9 enters the surface of the marking object 1 with an incident angle θ of less than 90 °. The cover unit 5 covers the holding means 7 and the light source 9 and is provided so as to block outside light other than light from the light source 9. Further, the opening 11 of the cover portion 5 is provided at a position where the marking object 1 can be visually recognized through the opening 11. Note that the power source of the light source 9 is not particularly limited, but when a battery is used, it is compact and excellent in portability.

  Next, a method for confirming the stamp will be described. When confirming the stamp 1a attached to the stamp object 1, the stamp object 1 is held by the stamp illumination device 100 by the holding means 7 as shown in FIG. Then, the marking object 1 is irradiated with light from the light source 9 of the lamp unit 3. The light irradiated on the marking object 1 is reflected on the surface of the marking object 1 as shown in FIG. FIG. 3 is an explanatory view showing reflection of light irradiated on the marking object. In FIG. 3, it is assumed that incident light incident on the marking object 1 from the light source 9 is parallel light. Here, the incident light parallel to the optical axis 13 has a reflection angle θ substantially the same as the incident angle θ as shown by the reflected light 13a on the surface of the marking object 1 on which the stamp 1a is not formed. Reflected. On the other hand, the incident light incident on the groove portion of the stamp 1a is similarly reflected on the wall surface of the groove portion as shown by the reflected light 13b having a reflection angle substantially the same as the incident angle. However, since the incident angles at the surface where the stamp 1a is not formed and the groove portions of the stamp 1a are different, the directions of the reflected light are different. That is, as shown in FIG. 3, since the reflection directions of the reflected light 13a and the reflected light 13b are different, a light shadow is generated between the surface of the stamped object 1 on which the stamp 1a is not formed and the stamp 1a. . Therefore, when the marking object 1 held by the holding means 7 and irradiated with light is confirmed from the opening 11 of the cover portion 5, the marking 1a can be easily visually confirmed. In particular, as shown in FIG. 3, it is preferable that the groove portion constituting the stamp 1a has an inclination. If the groove portion of the stamp 1a has an inclination, the difference between the reflection direction of the light reflected in the groove portion and the reflection direction of the light reflected on the surface on which the stamp mark is formed becomes large. Therefore, the shadow of the light is clearly generated by the reflected light in the groove portion of the stamp 1a and the reflected light on the surface on which the stamp is formed, and the stamp can be easily visually recognized. Further, since the cover 5 blocks outside light other than light from the light source 9, external light on the surface of the stamped object 1 and reflection of the surrounding environment are reduced, and the visibility of the stamped mark 1a is improved. be able to. The cover part 5 is preferably a black antireflection material. When formed from an antireflection agent, reflection of external light and surrounding environment is reduced, and when it is black, contrast with reflected light becomes clear.

By using the stamp illumination device 100 as described above, the visibility of the stamp 1a can be improved at a low cost without changing the illumination environment of the stamp object 1. Further, since the confirmation of the stamp 1a is easy, the efficiency of the confirmation work can be improved and the accuracy of confirmation of the stamp 1a can be improved. Furthermore, since the confirmer can accurately read the stamp 1a, it is possible to maintain the quality of the device or the like on which the stamp object 1 is mounted, and to reduce the occurrence of accidents due to erroneous reading of the rated value or the like. . In addition, as compared with a case where individual confirmers individually devise and confirm the stamp 1a, the work time of each confirmer is less varied. Therefore, man-hour management becomes easy. Furthermore, since the above-described engraving illumination device 100 is integrally formed with the elements necessary for confirming the stamp 1a, it is compact and excellent in portability.
<Second Embodiment>
4 and 5 are perspective views of the marking illumination device according to the second embodiment of the present invention, FIG. 6 is a perspective view of the main part of the marking illumination device, and FIG. 7 shows a method of holding the marking object by the holding means. It is explanatory drawing. The marking illumination device 200 according to the second embodiment is an illumination device for confirming the stamp 22 of an electronic component such as a fuse, in which the marking object 20 is a cylindrical electronic component. The marking illumination device 200 according to the second embodiment includes a gripping unit 21, a lamp unit 23 having a light source 29 that emits light, a cover unit 25 having an opening 24 for inserting and removing a fuse and confirming stamping, and a light source 29. A holding means 27 and a diffusing plate 31 are included for aligning the marking object 20 with respect to the optical axis of the light emitted from. The holding means 27 has a cylindrical shape that is slightly larger than the fuse so that it can be held by inserting a columnar fuse therein. When the holding means 27 is formed of a cylindrical transparent acrylic resin plate, it is easy to process, and even when a fuse is inserted into the holding means 27, the stamp 22 is confirmed while being fixed to the holding means 27. This is preferable. The holding means 27 is provided with a first switch means (35a, 35b) 35 attached to the inner wall of the holding means 27 and a connection portion 37 for connecting the first switch means 35 and the light source 9. For example, as shown in FIG. 7, the first switch unit 35 turns on the light source 29 when a fuse is inserted into the holding unit 27. Specifically, when a fuse, which is an object to be stamped 20 formed of a glass portion 20a, a metal portion 20b, and a stamp 22 formed on the metal portion 20b, is inserted into the holding means 27, the metal portion 20b of the fuse and the first switch means. 35a and 35b come into contact. By this contact, the first switch means 35 a and 35 b are short-circuited, and the light source 29 is turned on via the connection portion 37. Further, the grip portion 21 is provided with a second switch means 33 that can manually turn on and off the light source 29.

  The gripping part 21, the lamp unit 23, the cover part 25, the holding means 27, and the diffusion plate 31 are combined as follows to constitute the marking illumination device 200. The diffusion plate 31 is provided so as to cover the light emission direction of the lamp unit 23 in order to flatten the light intensity distribution of the light emitted from the light source 29. If the diffusing plate 31 is too large, scattered light is generated, and light enters the stamp mark 22 from many directions, so that the shadow of the stamp mark 22 becomes unclear. Therefore, it is preferable to make it an appropriate size.

  The cover unit 25 covers the light source 29 and the holding unit 27 and is provided so as to block outside light other than light from the light source 29. Further, the opening 24 of the cover portion 25 is provided at a position where the marking object 20 can be visually recognized through the opening 24. The holding means 27 is provided along the wall surface constituting the cover portion 25 facing the light source 29. As shown in FIG. 6, when the marking object 20 is held by the holding means 27 and light is emitted from the light source 29 of the lamp unit 23 to the marking object 20, the optical axis 40 of the light from the light source 29 and the marking object. 20 surfaces intersect. That is, as in FIG. 3 described above, the light from the light source 29 enters the surface of the marking object 20 with an incident angle of less than 90 °.

  Furthermore, a reflection plate that reflects light may be provided on the side opposite to the light emission direction of the light source 29. By providing the reflection plate, the same effect as the diffusion plate can be obtained.

  Next, a method for confirming the stamp 22 will be described. When confirming the stamp 22 attached to the cylindrical fuse that is the marking object 20, the fuse is inserted into the cylindrical holding means 27. Then, light is emitted from the light source 29 of the lamp unit 23 to the fuse. The light source 29 is turned on when the metal portion 20b of the fuse comes into contact with the first switch means 35, and irradiates the fuse. As described above, when the fuse is inserted into the holding means 27 and held, light is automatically emitted from the light source 29 by the first switch means 35, so that it is possible to save the time for the confirmer to irradiate the fuse with light. Therefore, the confirmation work of the stamp 22 can be easily performed. The light source 29 may be turned on manually by the confirmer using the second switch means 33 instead of the first switch means 35. Even when the contact between the first switch means 35 and the metal portion 20b of the fuse is poor, light can be stably supplied from the light source 29. The incident light incident on the metal portion 20b of the fuse is reflected on the surface of the metal portion 20b. At this time, the incident light incident on the surface of the metal portion 20b where the stamp 22 is not formed differs from the light reflection direction of the incident light incident on the stamp 22, so that a light shadow is generated. The principle of causing light shading is the same as that in FIG. 3 shown in the first embodiment, and will not be described. Therefore, when the fuse stamp 22 is confirmed from the eye line 43 through the opening 24 of the cover portion 25 as shown in FIG. 5, the stamp 22 can be easily visually confirmed. Moreover, since the cover part 25 blocks outside light other than light from the light source 29, external light on the surface of the metal portion 20b of the fuse and reflection of the surrounding environment are reduced, and visibility of the stamped mark 22 is improved. be able to. In particular, when the portion provided with the stamp mark 22 such as the metal portion 20b of the fuse described above is a curved surface, the reflection on the curved surface is remarkable, so that the reflection can be effectively reduced by the cover portion 25, which is preferable. It is preferable that the cover portion 25 is a black antireflection material because reflection of external light and the surrounding environment is reduced and the contrast with the reflected light becomes clear.

By using the stamp illumination device 200 as described above, the visibility of the stamp 22 can be improved at low cost without changing the illumination environment of the fuse. Further, it is possible to improve the efficiency of the confirmation work, the accuracy of reading, and the quality maintenance of the device in which the fuse is mounted. Moreover, since the confirmation work of the stamp 22 is easy, man-hour management is also facilitated. Furthermore, since the elements necessary for confirming the stamp 22 are integrally formed, it is compact and excellent in portability.
<Other embodiment examples>
If a reversing means for inverting the character of the stamp in accordance with the direction of the stamp is provided at the opening of the cover of the stamp illumination device of the first or second embodiment, the glass portion 20a of the normal fuse is on the lower side. It becomes easy to confirm the stamp formed. Here, the inversion includes inversion in which the up and down directions are switched by rotating on a plane, or conversion for obtaining an inverted image, in which both up and down and left and right are switched. Further, if an enlargement means for enlarging the stamp is provided in the opening, the visibility of the stamp stamped small is improved.

  The inversion means is, for example, a mirror or a prism. By combining a plurality of mirrors, the vertical direction of the stamp can be reversed. If the prism also uses its reflection function, the vertical direction of the stamp can be reversed.

  The enlargement means is, for example, a combination of one or two convex lenses. If one convex lens is used, the stamp can be enlarged. Further, when two convex lenses are combined, the vertical direction of the stamp can be reversed and enlarged. Therefore, the visibility of the stamp can be improved without reversing the stamp illumination device itself in which the stamp is inserted, so that the work efficiency can be improved.

  If the present invention is used, since the contents of the stamp formed on the stamped object can be easily confirmed, the stamp can be read quickly in a production line or the like, and reading errors can be reduced.

The perspective view of the marking illumination apparatus which concerns on the example of 1st Embodiment of this invention. Sectional drawing of the marking illuminating device shown in FIG. Explanatory drawing which shows reflection of the light irradiated to the marking target object. The perspective view (1) of the marking illuminating device which concerns on the example of 2nd Embodiment of this invention. The perspective view (2) of the marking illuminating device which concerns on 2nd Embodiment of this invention. The perspective view of the principal part of a marking lighting apparatus. Explanatory drawing which shows the fixing method of the marking target object by a holding means.

Explanation of symbols

1, 20: Marking object 1a, 22: Stamping
3, 23: Lamp unit
5, 25: Cover part
7, 27: Holding means
9, 29: Light source
11, 24: Opening
13: Optical axis
21: Grasping part
31: Diffuser
33: Second switch means
35: First switch means
100, 200: Stamping illumination device

Claims (8)

An engraving illumination device for irradiating light on an object to be engraved on which an inscription is formed,
A light source;
Holding means for holding the marking object so that the surface on which the marking of the marking object is formed and the optical axis of the light emitted from the light source intersect,
Covering means for covering the holding means and the light source, blocking outside light other than light from the light source, and having an opening for visually recognizing the stamped object.
The said holding means is a marking illumination apparatus which hold | maintains the said marking target object in the said light source or the said cover means.   The marking illumination device according to claim 1, wherein an incident angle of light from the light source to a surface on which the stamped object of the stamped object is formed is less than 90 °.   The marking illuminating device according to claim 1, wherein the stamp is formed by a groove having an inclination in a depth direction thereof.   The marking illumination device according to claim 1, further comprising a first switch unit that is attached to the holding unit and causes the light source to emit light when the marking object is held by the holding unit.   5. The marking illumination device according to claim 4, further comprising second switch means for manually controlling light from the light source.   The marking illumination device according to claim 1, wherein the holding means is a cylindrical transparent acrylic resin plate.   The marking illumination device according to claim 1, wherein the cover means is formed of a black antireflection material.   The marking illuminating device according to claim 1, further comprising a reversing / enlarging unit that is attached so as to correspond to the opening and reverses and / or enlarges the stamp of the marking object.

Images