Electromagnetic counter with lighting device

Abstract

To provide an electromagnetic counter with a lighting device, configured to allow a substrate with the lighting device attached thereto to be easily positioned and fixed on a housing, with high productivity.SOLUTION: A substrate groove 118 is formed on an inner upper wall 104T inside an inner housing 104 having a built-in number wheel 112, and a positioning projection 124 is provided in the substrate groove 118. A lighting device 136 is fixed to the tip part of a substrate 116, and a lighting device electrode is provided to the other end part. The substrate 116 has a first width part 1161 and a second width part 1162 wider than the first width part 1161 formed thereon, and a positioning hole 126 bored in the first width part 1161. The substrate 116 is installed in the substrate groove 118 by the positioning hole 126 being fitted to the positioning projection 124. The positioning projection 124 and the positioning hole 126 are brought into pressure contact with each other, and thus the substrate 116 is temporarily fixed. By inserting the inner housing 104 with the substrate 116 temporarily fixed into an outer housing 102, the substrate 116 is fixed and positioned in the inner housing 104.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electromagnetic counter with an illumination device. In particular, the present invention relates to an illumination device for an electromagnetic counter with an illumination device, which has high assembly productivity. In the following description, names using numbers such as first, second, etc. are used, but this is for the convenience of explanation to avoid confusion with the same names, and does not affect the interpretation of the rights. [Background technology]

[0002] A first prior art technique is an electromagnetic counter equipped with an illumination device, which comprises an electromagnet, an anchor that oscillates when the electromagnet is excited and demagnetized, and a digit wheel that rotates a predetermined angle in response to the oscillating movement of the anchor, and which has a flexible board mounted with light-emitting diodes that illuminate the digit wheel, located in a gap in the housing (see Patent Document 1).

[0003] As a second prior art, there is known an electromagnetic counter with an electromagnetic counting mechanism mounted on a frame member, the electromagnetic counting mechanism comprising an electromagnet, an anchor that oscillates by energizing and demagnetizing the electromagnet, and a number of number wheels that rotate by a predetermined angle in conjunction with the oscillating movement of the anchor, the frame member being inserted into a box-shaped cover member and the number wheels being arranged near a window hole provided in the front surface of the cover member to form a display unit, and the count numbers displayed by the number wheels are read through the window hole, the electromagnetic counter has a mounting board on which light-emitting diodes that illuminate the display unit are mounted and on which a wiring pattern for supplying power to the light-emitting diodes is formed, the mounting board is disposed in a narrow gap formed between the mounting board and the frame member on the inside of the cover member, the light-emitting diodes are positioned near the number wheels, and reflection means is provided around the window hole on the inside of the cover member to reflect light from the light-emitting diodes towards the number wheels (see Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2005-222143 [Patent Document 2] Patent Publication No. 2007-011719 Summary of the Invention [Problem to be solved by the invention]

[0005] In the first prior art, the flexible substrate on which the light emitting diode is mounted is positioned and then fixed to the housing by, for example, double-sided tape. Therefore, the flexible substrate must be positioned separately, and double-sided tape must be applied, which may reduce productivity. Furthermore, when using double-sided tape, the flexible substrate may become misaligned depending on the adhesive strength. In the second prior art, the mounting board on which the light emitting diode is fixed is attached to the housing with double-sided tape, and so the second prior art also has the same concerns as the first prior art.

[0006] An object of the present invention is to provide an electromagnetic counter with an illumination device that can easily position a board on which an illumination device is mounted in a housing, is free from the risk of the counter becoming displaced from that position, and is highly productive. [Means for solving the problem]

[0007] In order to achieve the above object, the first aspect of the present invention is configured as follows. An electromagnetic counter with an illumination device, in which a cubic inner housing is tightly inserted into and integrated with a cubic outer housing having an observation window on the front side, the inner housing incorporates a number wheel arranged on the front side and an electromagnetic actuator for rotating the number wheel by a predetermined angle at a time, a lighting device is fixed to one end of a substrate having an electrode for a lighting device formed thereon for supplying electricity to the lighting device at the other end of the substrate, the lighting device being arranged to the side of the number wheel, and the electromagnet electrode and the lighting device electrode being provided so as to protrude rearward from the inner housing, and at least a portion of the substrate is The electromagnetic counter with an illumination device has a first width portion formed to have one width and a second width portion formed wider than the first width portion, the illumination device is attached to one end and an electrode for the illumination device is provided at the other end, the inner upper wall of the inner housing has an upper opening with a portion open facing the number wheels, and a board groove that traverses the upper opening in a continuous linear manner from the front to the rear and is formed to a width into which the first width portion fits, the second width portion of the board is fitted into the upper opening and the first width portion is fitted into the board groove, and the illumination device is positioned above the number wheels.

[0008] In order to achieve the above object, the second aspect of the present invention is configured as follows. The electromagnetic counter with illumination device of the first invention is characterized in that the substrate has a positioning hole in the middle, the inner housing has a positioning protrusion protruding from the bottom surface of the substrate groove, and the positioning protrusion is fitted into the positioning hole.

[0009] The third aspect of the present invention is configured as follows. The electromagnetic counter with an illumination device according to the second invention is characterized in that the positioning protrusion is a cylindrical portion and the positioning hole is a circular hole.

[0010] The fourth aspect of the present invention is configured as follows. The electromagnetic counter with an illumination device according to a third aspect of the present invention is characterized in that the cylindrical portion is disposed within the substrate groove on the inner rear wall side of the upper opening.

[0011] The fifth aspect of the present invention is configured as follows. A reflector is disposed between the front surface of the inner housing and the outer front wall of the outer housing, and a lower plate constituting the reflector is disposed below the number wheel. The electromagnetic counter with an illumination device according to the first or second invention is characterized in that: Effect of the Invention

[0012] In a first aspect of the present invention, an electromagnetic counter with an illumination device is configured such that a cubic inner housing is tightly inserted into a cubic outer housing having an observation window on the front side. The inner housing houses a number wheel arranged on the front side and an electromagnetic actuator that rotates the number wheel by a predetermined angle at a time. A substrate having an illumination device fixed to one end and electrodes for the illumination device formed on the other end is disposed against the inner housing. As a result, the lighting device is disposed to the side of the number wheel, and the electrodes for the electromagnet and the lighting device protrude rearward from the inner housing. The substrate has at least a first width portion, a portion of which is formed with a first width, and has a second width portion which is formed to be wider than the first width portion. The upper wall of the inner housing has an upper opening with a portion thereof open facing the number wheel, and a base groove which traverses the upper opening in a straight line continuously from the front side to the rear side and is formed to a width into which the first width portion fits. The substrate is temporarily fixed to the inner housing by fitting the second width portion into the upper opening and the first width portion into the substrate groove, so that the lighting device is disposed above the number wheels and the electrodes for the lighting device protrude rearward from the inner housing. By inserting the inner housing with the circuit board temporarily fixed into the outer housing, the circuit board is held in the circuit board groove by the outer housing, and an electromagnetic counter with an illumination device is completed. The circuit board is placed in a predetermined position relative to the inner housing by fitting into the upper opening and the circuit board groove. Note that "fitted" includes cases where the circuit board is tightly fitted, as well as cases where the circuit board can be held in the predetermined position even if there is a gap.

[0013] In the second invention, since it has the same configuration as the first invention, the object of the present invention can be achieved. Furthermore, in the second invention, the substrate has a positioning hole in the middle, and the inner housing has a positioning protrusion protruding from the bottom surface of the substrate groove, and the positioning protrusion is fitted into the positioning hole. The positioning of the board relative to the inner housing is also determined by fitting the cylindrical portion of the inner housing into the circular hole of the board, which has the advantage that the positioning of the board can be more reliably determined.

[0014] In the third invention, since it has the same configuration as the second invention, the object of the present invention can be achieved. Furthermore, in the third invention, the positioning protrusion is a cylindrical portion and the positioning hole is a circular hole. This has the advantage that the circular hole can be easily fitted into the cylindrical portion.

[0015] The fourth invention has the same configuration as the third invention, and therefore the object of the present invention can be achieved. Furthermore, in the fourth invention, the cylindrical portion is disposed in the substrate groove on the rear wall side of the upper opening. Therefore, there is an advantage that the arrangement of the lighting device is not affected, and the number wheel can be appropriately illuminated.

[0016] The fifth invention has the same configuration as the first or second invention, and therefore can achieve the object of the present invention. Furthermore, in the fifth invention, the reflector is also disposed below the number wheel, which has the advantage that the illumination from the lighting device can be further irradiated onto the number wheel. [Brief description of the drawings]

[0017] [Figure 1]FIG. 1 is a perspective view of an electromagnetic counter with an illumination device according to a first embodiment of the present invention, where (A) is an overall perspective view and (B) is a perspective view of a state in which an inner housing is pulled out from an outer housing. [Diagram 2] FIG. 2 is a perspective view of an inner housing of the electromagnetic counter with an illumination device according to the first embodiment of the present invention, where (A) is a rear perspective view and (B) is a rear perspective view of the inner housing pulled out from the outer housing. [Diagram 3] FIG. 3 is a rear perspective view of an inner housing of the electromagnetic counter with an illumination device according to the first embodiment of the present invention. [Figure 4] FIG. 4 shows the inner housing of the electromagnetic counter with an illumination device according to the first embodiment of the present invention, where (A) is a plan view, (B) is a rear view, (C) is a left side view, and (D) is a front view. [Diagram 5] FIG. 5 is a cross-sectional view taken along line YY in FIG. [Figure 6] FIG. 6 shows a reflector used in the electromagnetic counter with illumination device of the first embodiment of the present invention, where (A) is a front view, (B) is a plan view, (C) is a left side view, (D) is a right side view, (E) is a rear view, and (F) is a bottom view. [Figure 7] FIG. 7 shows a circuit board used in an electromagnetic counter with an illumination device according to a first embodiment of the present invention, where (A) is a plan view, (B) is a front view, (C) is a left side view, (D) is a right side view, (E) is a bottom view, and (F) is a cross section taken along line YY in (E). [Figure 8] FIG. 8 is an explanatory diagram of an electromagnetic counter with an illumination device according to a first embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The electromagnetic counter with an illumination device according to the present invention comprises a cubic inner housing tightly inserted into and integrated with a cubic outer housing having an observation window on the front side, the inner housing incorporating a number wheel arranged on the front side and an electromagnetic actuator for rotating the number wheel by a predetermined angle at a time, a lighting device is fixed to one end, and a substrate having an electrode for a lighting device for supplying electricity to the lighting device formed thereon is arranged against the inner housing at the other end, so that the lighting device is arranged to the side of the number wheel, and the electrode for an electromagnet and the electrode for a lighting device are provided protruding from the back side of the inner housing. The substrate has at least a first width portion, a portion of which is formed with a first width, and a second width portion formed wider than the first width portion, the lighting device is attached to one end, and an electrode for the lighting device is provided at the other end, the upper wall of the inner housing has an upper opening, a portion of which is open facing the number wheel, and a substrate groove that traverses the upper opening in a continuous linear manner from the front side to the rear side and is formed to a width into which the first width portion fits, and it is preferable that the second width portion of the substrate is fitted into the upper opening and the first width portion is fitted into the substrate groove, and the lighting device is positioned above the number wheel. It is also preferable that the substrate has a positioning hole in the middle, the inner housing has a positioning protrusion protruding from a bottom surface of the substrate groove, and the positioning protrusion is fitted into the positioning hole. Furthermore, it is preferable that the positioning protrusion is a cylindrical portion and the positioning hole is a circular hole. It is also preferable that the cylinder is disposed within the substrate groove on the rear wall side of the upper opening. Furthermore, it is preferable to dispose a reflector between the front surface of the inner housing and the front plate of the outer housing, and to dispose a lower plate constituting the reflector below the number wheels. EXAMPLES

[0019] First Embodiment An outline of an electromagnetic counter 100 with an illumination device according to a first embodiment of the present invention will be described with reference to FIG. The electromagnetic counter with illumination 100 of the present invention includes an outer housing 102, an inner housing 104, and a reflector 106, and is configured such that the reflector 106 is integrated into the front surface of the inner housing 104 and the inner housing 104 is tightly inserted into the outer housing 102.

[0020] First, the outer housing 102 will be described mainly with reference to FIG. The outer housing 102 has a function of incorporating the inner housing 104. In this embodiment 1, the outer housing 102 is formed in a hollow cube shape, and is a hexahedron formed by an outer front wall 102F, an outer left wall 102L, an outer right wall 102R, an outer upper wall 102T, and an outer lower wall 102B, and a rectangular storage chamber 102C is formed inside, but the back surface is formed as a rectangular outer insertion opening 102o. The outer front wall 102F is a horizontally long rectangle, and a viewing window 108, which is a horizontally long opening, is opened in the center. Opposite to the viewing window 108, a viewing window cover 110 made of transparent resin is arranged. The outer left wall 102L and the outer right wall 102R are horizontally long rectangles and are formed to have the same dimensions. The outer upper wall 102T and the outer lower wall 102B are rectangular and are formed to have the same dimensions. It is preferable that the outer housing 102 is integrally formed from resin or the like. An outer locking hole 102E is formed in the outer right wall 102R to receive and lock the inner locking protrusion 104E formed in the inner right wall 104R of the inner housing 104. In the first embodiment, the outer locking hole 102E is rectangular, but is not limited to a rectangular shape and may be circular or semicircular as long as it has the same locking function.

[0021] Next, inner housing 104 will be described mainly with reference to FIGS. The inner housing 104 has a built-in number wheel 112 and an electromagnetic actuator 114, is provided with a substrate 116, and is fitted into the outer housing 102. In this embodiment 1, the inner housing 104 is a hollow cube, and is formed into a hexahedron by an inner front portion 104F, an inner left wall 104L, an inner right wall 104R, an inner upper wall 104T, an inner lower opening 104SA, and an inner rear wall 104B. The inner left wall 104L, the inner right wall 104R, the inner upper wall 104T, and the inner rear wall 104B are rectangular flat plates having a predetermined thickness.

[0022] The inner front portion 104F is formed in a gate shape by an inner left wall 104L and an inner right wall 104R of a predetermined thickness that are arranged at a predetermined interval, and an inner upper wall 104T that connects their upper ends, forming a rectangular inner front opening 104o surrounded by them.

[0023] The inner left wall 104L is roughly a horizontally elongated rectangle having a predetermined thickness, but the inner upper wall 104T on the inner front opening 104o side protrudes forward from the inner left wall 104L, forming a left opening 104AL below. A left reflector locking portion 122L for locking the reflector 106 is formed on the outer surface of the front end of the inner left wall 104L. A shallow rectangular left recess 120L is formed at a predetermined length from the middle tip of the outer surface of the front tip of the inner left wall 104L. A left reflector locking portion 122L with a right-angled triangular cross section is formed in the center of the left recess 120L.

[0024] The inner right wall 104R is a horizontally elongated rectangle having a predetermined thickness, similar to the inner left wall 104L, but the inner upper wall 104T on the inner front opening 104o side protrudes from the inner right wall 104R, and a right opening 104AR is formed below. A right reflector locking portion 122R for locking the right end of the reflector 106 is formed at the front end of the inner right wall 104R. A shallow rectangular right recess 120R is formed at a predetermined length from the tip at the middle of the outer surface of the front tip of the inner right wall 104R. A right reflector locking portion 122R with a cross section formed in a right triangle is formed at the center of the right recess 120R. A shallow rectangular right recess 120R is formed at a predetermined length from the tip at the middle of the outer surface of the front tip of the inner right wall 104R. A right reflector locking portion 122R with a cross section formed in a right triangle is formed at the center of the right recess 120R.

[0025] Next, the inner locking projection 104E will be described. An inner locking protrusion 104E is formed near the inner rear wall 104B of the inner right wall 104R. The inner locking protrusion 104E protrudes into an outer locking hole 102E formed in the outer right wall 102R and locks one wall surface that forms the outer locking hole 102E formed in the vertical surface of the outer right wall 102R, thereby retaining the inner housing 104 within the outer housing 102.

[0026] The inner upper wall 104T is a rectangular flat plate-like body that connects the upper ends of the inner right wall 104R and the inner left wall 104L that are arranged at a predetermined interval. In this embodiment 1, the inner upper wall 104T is divided into a front inner upper wall 104TF and a rear inner upper wall 104TB, and a rectangular upper opening 104A is formed between them. The front inner upper wall 104TF is a rectangular flat plate shape formed with a first predetermined length L1 toward the inner rear wall 104B side, continuing from the upper wall convex portion 104P. The rear inner upper wall 104TB is a rectangular flat plate shape formed with a second predetermined length L2 from the inner rear wall 104B toward the upper wall convex portion 104P side. The rear end TFE of the front inner upper wall 104TF and the front end edge TBF of the rear inner upper wall 104TB form a rectangular upper opening 104A having a third predetermined length L3. The upper opening 104A is a horizontally elongated rectangular opening, and the rear part of the number wheel 112 is located directly below it. A substrate groove 118 is formed in the center of the inner upper wall 104T in the left-right direction. The substrate groove 118 has a function of fitting the substrate 116 and positioning the substrate 116. In this embodiment 1, the substrate groove 118 is formed linearly in the front inner upper wall 104TF and the rear inner upper wall 104TB at the center in the left-right direction of the inner upper wall 104T, and has a substrate groove width iW. In other words, the substrate groove 118 is formed linearly and continuously from the front side to the rear side across the upper opening 104A. In this embodiment 1, the substrate groove width iW is about 6 mm wide and is a groove with a depth of 0.4 mm. In detail, the substrate groove 118 is composed of a first substrate groove 1181 formed in the front inner upper wall 104TF and a second substrate groove 1182 formed in the rear inner upper wall 104TB, and the upper opening 104A is disposed between the first substrate groove 1181 and the second substrate groove 1182. In other words, the first substrate groove 1181 and the second substrate groove 1182 are provided in a straight line along the same axis SL. In the second substrate groove 1182, a positioning protrusion 124 is formed.

[0027] The positioning protrusion 124 has a function of fitting into a positioning hole 126 formed in the substrate 116 to position the substrate 116. In this embodiment 1, the positioning protrusion 124 is a cylindrical protrusion having a predetermined diameter that protrudes from the bottom surface of the second substrate groove 1182, which is the substrate groove 118, and is also called a cylindrical portion. The concept of the positioning protrusion 124 fitting into the positioning hole 126 includes a case where the positioning protrusion 124 fits tightly, as well as a case where the positioning protrusion 124 fits with a small gap. In this embodiment 1, the positioning protrusion 124 is a cylindrical portion having a predetermined diameter. The positioning protrusion 124 may adopt other shapes having the same function.

[0028] Next, the inner lower opening 104SA will be described mainly with reference to FIG. The inner lower opening 104SA is a substantially rectangular opening formed at a position opposite to the inner lower wall located opposite to the inner upper wall 104T. In this embodiment 1, the inner lower opening 104SA is a rectangular opening in which almost the entire lower surface of the inner housing 104 is opened.

[0029] The inner rear wall 104B is formed in a rectangular flat plate shape that connects the rear ends of the inner left wall 104L and the inner right wall 104R and has an upper end connected to an end of the inner upper wall 104T. The inner rear wall 104B is formed with a screw hole 130 for mounting the inner left wall 104L to another device.

[0030] Next, the number wheel 112 will be described mainly with reference to FIG. The number wheel 112 has a function of displaying a count value. In the present embodiment 1, the number wheel 112 is a disk body on which the numbers 0 to 9 are displayed at equal intervals on the circumferential surface, and a plurality of numbers, specifically a first digit number wheel 1121, a second digit number wheel 1122, a third digit number wheel 1123, a fourth digit number wheel 1124, a fifth digit number wheel 1125, a sixth digit number wheel 1126, and a seventh digit number wheel 1127, are arranged in parallel on the same axis. Therefore, in the present embodiment 1, a seven-digit count value can be displayed. The first digit number wheel 1121 is rotated 36 degrees every time it is rotated by the electromagnetic actuator 114, and as a result, it is rotated 360 degrees when it is operated 10 times. The adjacent second digit number wheel 1122 is rotated 36 degrees for each rotation of the first digit number wheel 1121. The relationship between the third digit number wheel 1123 to the seventh digit number wheel 1127 is also the same. The number of number wheels 112 arranged in parallel can be selected appropriately. The number wheel 112 is positioned near the inner front opening 104o, with approximately the front half being positioned below the front inner upper wall 104TF, the rear half of the number wheel 112 facing the upper opening 104A, and the lower surface of the number wheel 112 facing the inner lower opening 104SA.

[0031] Next, the electromagnetic actuator 114 will be described. The electromagnetic actuator 114 has a function of moving the first digit number wheel 1121 one graduation at a time with one excitation. In other words, the electromagnetic actuator 114 has a function of moving the first digit number wheel 1121 36 degrees at a time. In this embodiment 1, the electromagnetic actuator 114 is a known electromagnetic actuator for an electromagnetic counter, and includes an electromagnet 132, an anchor 134, etc.

[0032] When the electromagnet 132 has an electromagnetic coil magnetized, for example, a movable piece integrated with the base end of the pallet 134, which has a claw portion at its tip that meshes with the ratchet gear, is attracted to the iron core and auxiliary iron core, and the pallet 134 swings against the spring around the pivot shaft, while when the current to the electromagnet 132 is cut off, the iron core and auxiliary iron core lose their magnetic force, and the pallet swings in the opposite direction due to the force of the spring, thereby rotating the first-digit number wheel 1121 36 degrees. In other words, the pallet 134 performs one reciprocating swing motion by turning the current to the electromagnet 132 on and off, and this one swing motion rotates the ratchet gear 36 degrees. The ratchet gear is formed integrally with the first-digit number wheel 1121, and the first-digit number wheel 1121 also rotates 36 degrees as the ratchet gear rotates. The electromagnet 132 has an electromagnet electrode 133 disposed along the inner left wall 104L, which protrudes rearward a predetermined length from the inner rear wall 104B. The electromagnet electrode 133 is composed of an electromagnet positive electrode 133P and an electromagnet negative electrode 133N. The electromagnet 132 is supplied with electricity for operation via the electromagnet positive electrode 133P and the electromagnet negative electrode 133N.

[0033] Next, the reflector 106 will be described mainly with reference to FIG. The reflector 106 has a function of reflecting the light projected from the lighting device 136 attached to the substrate 116 toward the number wheel 112. In this embodiment 1, the reflector 106 is made of stainless steel sheet metal, but it can also be made of aluminum or plated metal with a glossy finish, or resin with a glossy finish. In this embodiment 1, the reflector 106 is configured in a dustpan shape by a front plate 106F, a left plate 106L, a right plate 106R, and a lower plate 106D, with the left plate 106L, the right plate 106R, and the lower plate 106D bent at a right angle to the front plate 106F. In this specification, the term "reflecting plate 106" may refer to the entire front plate 106F, left plate 106L, right plate 106R, and lower plate 106D, or may refer to any one of the front plate 106F, left plate 106L, right plate 106R, or lower plate 106D.

[0034] First, the front panel 106F will be described. The front plate 106F has a horizontally elongated rectangular shape when viewed from the front, is disposed relative to the inner front part 104F of the inner housing 104, and has a rectangular reflector through-hole 138 drilled in the center. The reflector through-hole 138 faces the observation window 108 and is formed slightly larger than the observation window 108.

[0035] Next, the left side plate 106L will be described. The left side plate 106L has a function of reflecting light projected from the lighting device 136 on the side of a left opening 104AL formed in front of the inner left wall 104L. In this embodiment 1, the left side plate 106L is a flat plate-like body that is bent at a right angle backward from the left end of the front plate 106F and has a convex shape in a front view. A rectangular reflector left locking hole 106LA that receives and locks the left reflector locking part 122L is drilled in the left side plate 106L. The part of the left side plate 106L adjacent to the front plate 106F faces the left opening 104AL, and therefore has the function of reflecting the projected light from the lighting device 136.

[0036] Next, the right side plate 106R will be described. The right side plate 106R has a function of reflecting light projected from the lighting device 136 on the side of a right opening 104AR formed in front of the right inner wall 104R. In the first embodiment, the right side plate 106R is a flat plate-like body that is bent at a right angle backward from the right end of the front plate 106F and has a convex shape in a front view. A rectangular reflector right locking hole 106RA that receives and locks the right reflector locking part 122R is drilled in the right side plate 106R. The part of the right side plate 106R adjacent to the front plate 106F faces the right opening 104AR, and therefore has the function of reflecting the projected light from the lighting device 136. The distance between the left side plate 106L and the right side plate 106R is set to be the same as the width of the inner housing 104, in other words, the distance between the outer surfaces of the inner left wall 104L and the inner right wall 104R. Therefore, the left side plate 106L is in close contact with the left recess 120L, and the right side plate 106R is in close contact with the right recess 120R.

[0037] Next, the lower plate 106D will be described. The lower plate 106D has a function of reflecting the light projected from the lighting device 136 below a lower opening 104SA formed below the inner front opening 104o. In this embodiment 1, the lower plate 106D is a horizontally elongated rectangular flat plate in front view, bent at a right angle backward from the lower end of the front plate 106F. The lower plate 106D is disposed below the number wheel 112 so as to overlap with a part of the number wheel 112 when viewed from above. The lower plate 106D is formed to a size that overlaps with approximately one-third of the diameter of the number wheel 112 when viewed from above. The lower plate 106D faces the lower opening 104SA formed below the inner front opening 104o, and therefore reflects the projected light from the lighting device 136.

[0038] The reflector 106 is temporarily fixed to the inner housing 104 by placing the front plate 106F opposite the inner front opening 104o, placing the right plate 106R against the inner right wall 104R, placing the left plate 106L against the inner left wall 104L, and engaging the left reflector locking hole 106LA with the left reflector locking portion 122L and the right reflector locking hole 106RA with the right reflector locking portion 122R. In other words, the upper end of the front plate 106F is placed against the front end face of the upper wall protrusion 104P.

[0039] Next, the substrate 116 will be described mainly with reference to FIG. The substrate 116 has a function of supporting the lighting device 136 and an electrode 142 for a lighting device that supplies power to the lighting device 136, and a function of holding the substrate 116 at a predetermined position relative to the inner housing 104. In this Example 1, the substrate 116 has at least a first width portion 1161, a part of which is formed with a first width W1, and a second width portion 1162, which is a wide portion formed with a second width W2 wider than the first width portion 1161, and has the lighting device 136 attached to one end portion and the electrode 142 for a lighting device provided at the other end portion.

[0040] In the first embodiment, the substrate 116 is formed into a roughly elongated rectangle as a whole. Specifically, it is composed of a first width portion 1161 formed in an elongated rectangle with a first width W1, and a second width portion 1162 formed in the middle with a second width W2 wider than the first width W1. The first width W1 is formed slightly narrower than the substrate groove width iW of the substrate groove 118. The second width portion 1162 is disposed in the upper opening 104A. The second width portion 1162 has a predetermined length BL1 in the longitudinal direction of the substrate 116. First width portion 1161 of substrate 116 is fitted into substrate groove 118 (first substrate groove 1181, second substrate groove 1182), and second width portion 1162 is fitted into upper opening 104A. When substrate 116 is fitted into substrate groove 118, the upper surface of substrate 116 and the upper surface of inner upper wall 104T are set to be flush with each other. Note that substrate 116 being fitted into substrate groove 118 is a concept that includes not only a case where substrate 116 is fitted tightly enough that resistance is felt when substrate 116 is inserted into substrate groove 118, but also a case where no insertion resistance is felt but substrate 116 is hardly moved in the width direction within substrate groove 118. The substrate 116 is provided with printed lines 128 for electrically connecting the lighting device 136 and the lighting device electrode 142. The printed lines 128 are composed of a positive printed line 128P and a negative printed line 128N. The positive printed line 128P is connected to the positive electrode of the lighting device 136 and the lighting device positive electrode 142P, and the negative printed line 128N is connected to the negative electrode of the lighting device 136 and the lighting device negative electrode 142N.

[0041] Next, the positioning hole 126 will be described. The positioning hole 126 has a function of positioning the substrate 116 relative to the inner housing 104 in cooperation with the positioning protrusion 124, and therefore of positioning the lighting device 136 and the lighting device electrode 142. In this embodiment 1, the positioning hole 126 is a circular hole having a predetermined diameter formed in the first width portion 1161, and is formed opposite to the second substrate groove 1182 formed in the inner rear wall 104B from the second width portion 1162. In other words, the positioning hole 126 is provided in the center of the substrate 116 in the longitudinal direction. In this embodiment 1, the positioning hole 126 is a circular hole having a predetermined diameter.

[0042] Next, the lighting device 136 will be described. The lighting device 136 has a function of illuminating the number wheel 112 from above. In this embodiment, a known light-emitting diode is used as the lighting device 136. In this embodiment, the lighting device 136 is formed in a cubic shape having a predetermined thickness, and is fixed to the underside of the front end portion of the substrate 116.

[0043] Next, the lighting device electrode 142 will be described. The lighting device electrode 142 has a function of connecting the positive printed wire 128P and the negative printed wire 128N connected to the lighting device 136 to a power source. In the first embodiment, the lighting device electrode 142 is a pair of elongated terminals protruding from one end of the substrate 116, and includes a lighting device positive electrode 142P and a lighting device negative electrode 142N. The lighting device positive electrode 142P is electrically connected to the positive printed wire 128P, and the lighting device negative electrode 142N is electrically connected to the negative printed wire 128N. Therefore, by inserting the lighting device positive electrode 142P and the lighting device negative electrode 142N into a power socket, electricity can be supplied to the lighting device 136 via the positive printed wire 128P and the negative printed wire 128N.

[0044] The substrate 116 is placed in the substrate groove 118 of the inner housing 104. In detail, the first width portion 1161 of the substrate 116 is disposed in the first substrate groove 1181 and the second substrate groove 1182 of the substrate groove 118, the second width portion 1162 is disposed in the upper opening 104A, and the positioning protrusion 124 is fitted into the positioning hole 126. In particular, a first distance D1 between the front end edge TBF of the rear inner upper wall 104TB and a protrusion end face 124E of the positioning protrusion 124 on the inner rear wall 104B side is set to be slightly larger than a second distance D2 between a substrate end face 1162E of the second width portion 1162 on the inner rear wall 104B side and a hole end face 126E of the positioning hole 126 on the inner rear wall 104B side. As a result, substrate end surface 1162E of substrate 116 is pressed against the front edge TBF, and protrusion end surface 124E is pressed against hole end surface 126E, so that the frictional force therebetween holds substrate 116 in inner housing 104, specifically substrate groove 118, with a predetermined frictional force. In other words, substrate 116 is temporarily fixed to inner housing 104. The structure in which substrate end surface 1162E of substrate 116 is pressed against the front edge TBF and hole end surface 126E and protrusion end surface 124E are pressed against each other can employ other structures having similar functions.

[0045] Next, a method for assembling the electromagnetic counter 100 with the illumination device will be described with reference to FIGS. When manufacturing the electromagnetic counter with illumination device 100, the outer case 102, the inner case 104 in which the number wheel 112 and the electromagnetic actuator 114 are built, and the substrate 116 are prepared. First, the substrate 116 is set in the substrate groove 118. That is, the substrate 116 is temporarily fixed to the inner housing 104 by fitting the positioning hole 126 into the positioning protrusion 124. As a result, the first width portion 1161 is fitted into the first substrate groove 1181 and the second substrate groove 1182, and the second width portion 1162 is fitted into the upper opening 104A. Since the first distance D1 between the front end edge TBF and the protrusion end face 124E of the positioning protrusion 124 is set to be slightly larger than the second distance D2 between the substrate end face 1162E and the hole end face 126E on the inner rear wall 104B side of the positioning hole 126, the substrate end face 1162E and the front end edge TBF, and the protrusion end face 124E and the hole end face 126E are in contact with each other with a predetermined pressure contact force, so that there is a predetermined frictional force, and when a predetermined external force is not applied, the substrate 116 is held by the inner housing 104 and does not shift. As a result, the lighting device 136 is disposed above the center of the number wheel 112, and the lighting device electrode 142 protrudes rearward at a predetermined position on the inner rear wall 104B.

[0046] Next, the reflector 106 is attached to the inner housing 104. That is, the front plate 106F of the reflector 106 is opposed to the inner front part 104F of the inner housing 104, the left plate 106L is placed against the outer surface of the inner left wall 104L, and the right plate 106R is placed against the outer surface of the inner right wall 104R and pushed in. As a result, the left plate 106L fits into the left recess 120L, the left reflector locking part 122L protrudes into the reflector left locking hole 106LA, and the left plate 106L is locked by the left reflector locking part 122L. The right plate 106R fits into the right recess 120R, the right reflector locking part 122R protrudes into the reflector right locking hole 106RA, and the right plate 106R is locked by the right reflector locking part 122R. As a result, reflecting plate 106 is temporarily fixed to inner housing 104 with left side plate 106L facing left opening 104AL, right side plate 106R facing right opening 104AR, and lower plate 106D facing inner lower opening 104SA. Left side plate 106L, right side plate 106R, and lower plate 106D can each reflect the projected light from lighting device 136 toward number wheel 112.

[0047] Next, the inner housing 104 to which the substrate 116 and the reflector 106 are temporarily attached is inserted into the accommodation chamber 102C from the outer insertion opening 102o, and the inner locking protrusions 104E are caused to protrude into the outer locking holes 102E of the outer housing 102, and the outer housing 102 is locked by the inner locking protrusions 104E, completing the assembly. As a result, the reflector 106 and the substrate 116 are sandwiched and fixed between the inner housing 104 and the outer housing 102.

[0048] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible without departing from the gist of the present invention. [Explanation of symbols]

[0049] 100 Illuminated electromagnetic counter 102 Outer casing 102F Outer front wall 104 Inner housing 104A Upper opening 104B Internal posterior wall 106 Reflector 106D Lower plate 108 Peephole 112 number car 114 Electromagnetic Actuator 116 Substrate 1161 First width part 1162 Second width part 118 Substrate Groove 1181 First board groove 1182 Second board groove 124 Positioning protrusion 126 Positioning hole 133 Electrode for electromagnet 136 Lighting Equipment 142 Electrodes for lighting equipment

Claims

1. A cubic inner housing (104) is tightly inserted into and integrated with a cubic outer housing (102) having an observation window (108) on the front side, The inner housing (104) incorporates a number wheel (112) arranged on the front side and an electromagnetic actuator (114) that rotates the number wheel (112) by a predetermined angle at a time; a substrate (116) having an illumination device (136) fixed to one end thereof and an electrode (142) for an illumination device for supplying electricity to the illumination device (136) formed at the other end thereof, the substrate (116) being disposed against the inner case (104) so ​​that the illumination device (136) is disposed to the side of the number wheel (112), and an electromagnet electrode (133) and the electrode (142) for the illumination device are provided protruding rearward from the inner case (104); the substrate (116) has at least a first width portion (1161) partially formed with a first width and a second width portion (1162) formed wider than the first width portion (1161), the lighting device (136) is attached to one end portion, and the lighting device electrode (142) is provided at the other end portion; The inner upper wall of the inner housing (104) is formed with an upper opening (104A) with a portion thereof opened facing the number wheel (112), and a base groove (118) that traverses the upper opening (104A) linearly from the front side to the rear side and is formed with a width into which the first width portion (1161) fits. The second width portion (1162) of the base plate (116) is fitted into the upper opening (104A), and the first width portion is fitted into the base plate groove, and the lighting device (136) is disposed above the number wheel (112).

1. An electromagnetic counter with an illumination device.

2. The base plate (116) has a positioning hole (126) in the middle thereof, The inner housing (104) has a positioning protrusion (124) protruding from a bottom surface of the substrate groove (118), The positioning projection (124) is fitted into the positioning hole (126).

2. An electromagnetic counter with an illumination device according to claim 1.

3. The positioning protrusion (124) is a cylindrical portion, The positioning hole (126) is a circular hole.

3. An electromagnetic counter with an illumination device according to claim 2.

4. The cylindrical portion is disposed in the base plate groove (118) on the inner rear wall (104B) side relative to the upper opening (104A).

4. An electromagnetic counter with an illumination device according to claim 3.

5. A reflector (106) is disposed between the front surface of the inner housing (104) and the outer front wall (102F) of the outer housing (102), and a lower plate (106D) constituting the reflector (106) is disposed below the number wheel (112).

3. An electromagnetic counter with an illumination device according to claim 1 or 2.

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