JP2003188481A - Printed wiring board, discharge-lamp operating device, and luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a printed wiring board that can be controlled easily by easily recognizing control information on quality, etc. <P>SOLUTION: This printed wiring board 15 has a main body 21 and a printed section 22 which is formed by painting all over a prescribed area on one surface of the main body 21 in a color which is different from that of the surface and printing the control information 25 and 26 on quality, etc. The color of the printed section 22 is made equal to that of a component layout indication printed on the surface of the main body 21 so as to designate mounting positions of circuit components on the main body 21. Serial numbers inherent to the wiring board 15 are given to the information 25 and 26. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board provided in a circuit module constituting various circuits, a discharge lamp lighting device provided with a circuit module forming a discharge lamp lighting circuit, and a lighting device for lighting the discharge lamp. The present invention relates to a lighting fixture such as a fluorescent lighting fixture equipped with.

[0002]

2. Description of the Related Art As a discharge lamp lighting device for lighting a fluorescent lamp, a so-called electronic ballast is provided. This ballast has a configuration in which a circuit module for lighting, in which circuit components are mounted on a printed wiring board, is arranged between a metal base case and a cover case. The base case and the cover case are connected to each other to form a case body.

The display indicating the quality of the electronic ballast is generally performed by attaching a name plate (label) on the surface of the case cover, on which predetermined data is displayed. As data,
At least one of the production location of the ballast, the lot number at the production stage, the conforming product confirmation mark based on the inspection, etc. is displayed.

Further, as shown in Japanese Utility Model Laid-Open No. 5-20392, in order to control the quality of the printed wiring board, a display column showing a plurality of specifications of the printed wiring board is provided on the component mounting surface in the middle part of the board. There is also known a technique in which a display corresponding to the specification of the printed wiring board is marked (selection display) from the specifications displayed in the display column, which is attached in advance. This selection display includes the case where the relevant column is manually marked after the circuit component mounting process, and during the circuit component mounting process.
There is a case where an adhesive for mounting a circuit component is applied to the component mounting surface, and at the same time, the adhesive is automatically applied to the corresponding column for marking. It is said that these markings may be the production place of the printed wiring board, the lot number at the production stage, or the serial number.

[0005]

However, since the former display on the name plate can only realize quality control by lot number, quality control on a production day basis can be handled only by sampling inspection, and mass production is possible. It is not suitable for grasping time-sequential changes in quality when performing, and its improvement is required.

Moreover, when repairing a discharge lamp ballast due to a failure of a sold lighting fixture, quality control by lot number cannot grasp the manufacturing history of the discharge lamp to be repaired.
The improvement is also required. Further, since the nameplate is attached, there is a risk of peeling due to secular change if there is any attachment failure.

The latter printed wiring board can be quality-controlled for each individual product by applying its own serial number. However, since the printed wiring board is usually incorporated inside the electric device, it is not possible to know information about the printed wiring board from the outside when the electric device is assembled.

Moreover, the adhesive used for the selective display is for mounting the circuit parts, and the adhesive function is given the highest priority, and the difference with the background color of the printed wiring board is not always outstanding. Since it does not make it possible, it may cause difficulty in visual recognition or recognition by a visual sensor.

In addition, the printed wiring board coated with the adhesive is then heated for surface mounting of chip parts and the like. Therefore, when the selection display is a serial number formed by applying an adhesive, this number may be difficult to read visually or by a visual sensor. That is, the selection display slumps along with heating and spreads around,
It is easily deformed so that the display is broken. Therefore, it is unavoidable that the accuracy of visual recognition or recognition by the sensor is significantly reduced.

It is an object of the present invention to provide a printed wiring board, a discharge lamp lighting device, and a lighting fixture whose quality and the like can be easily controlled.

[0011]

According to a first aspect of the present invention, there is provided a printed wiring board having a wiring board body and a predetermined area on one surface of the wiring board body, which is solid-painted with a single color different from the color of the one surface. And a printing unit for displaying management information.

In the present invention, the printing portion which is solid-painted with a single color can be provided at an arbitrary position on one surface of the wiring board body, and, for example, a color having a color difference remarkably from the color of the one surface of the wiring board body, For example, it is preferable to use a white color. In the present invention, the one surface of the wiring board main body on which the printing section is provided may be the mounting surface of the component, and when a resist layer is provided on the wiring board main body, it may be the surface of this layer. In the present invention, management information such as quality is not limited to a single item, and may be one or more. Further, the present invention is limited in use to a printed wiring board included in a circuit module of a discharge lamp lighting device. Instead, it can be applied to a printed wiring board provided in a circuit module of various electric devices. Further, in the present invention, the management information such as the quality provided in the printing section is displayed by printing using a printing machine such as an ink jet, or a part of the printing layer forming the printing section is scraped by laser light. Then, it may be displayed by this scraped mark.

The discharge lamp lighting device of the invention according to claim 2 is
A case body having a base case and a cover case, and a printed wiring board according to claim 1 on which circuit components are mounted, and a portion provided with the printed portion is exposed so as not to be covered by the case body. And a circuit module housed in the case body.

According to the present invention, since the printed wiring board according to the first aspect is provided and the printed portion is exposed so as not to be covered with the case body, the printed portion is not disassembled in the printed portion. It is possible to provide the discharge lamp lighting device which can recognize the management information such as the attached quality and therefore can be easily managed.

The discharge lamp lighting device of the invention according to claim 3 is
An end portion of the printed wiring board according to claim 2 is exposed to the outside of the case body, a terminal block is provided together with the printing portion at the one end portion, and an input circuit portion of the module circuit is provided near the one end portion. It is characterized by that.

In the present invention, the terminal block for relaying the electric power supplied to the input circuit section is exposed outside the case body because it is necessary to connect the power supply line to the terminal block. Therefore, one end of the circuit module to which this terminal block is attached is also exposed and arranged outside the case body. Since the printing unit is provided at the one end by utilizing such arrangement, the management information such as the quality attached to the printing unit can be recognized without disassembling the case body.

A lighting fixture of the invention according to claim 4 is a chassis, the discharge lamp lighting device according to claim 2 or 3 mounted on the chassis, a discharge lamp socket mounted on the chassis, and this socket. And a discharge lamp which is detachably supported by the discharge lamp lighting device and is lit by the discharge lamp lighting device.

In this invention, since the discharge lamp lighting device according to claim 6 or 7 is provided, the quality attached to the printing portion of the printed wiring board exposed to the outside of the case body of the lighting device. It is possible to recognize the management information such as the above without disassembling the case body, and it is possible to provide a lighting device that is easily managed.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

The luminaire 1 shown in FIG. 1 comprises an elongated box-shaped chassis 2 having an open lower surface, and the lower surface of the chassis 2 is covered with a reflection plate 3. Fluorescent lamp sockets 4 as discharge lamp sockets are attached to both ends of the chassis 2 in the longitudinal direction, and these sockets 4 penetrate both ends of the reflector 3 in the longitudinal direction. A discharge lamp lighting device 5 called a so-called electronic ballast is housed in the chassis 2, and a straight tube fluorescent lamp 6 as a discharge lamp which is lit by the device 5 has its longitudinal ends in the lamp sockets 4, respectively. It is detachably connected and supported, and is arranged below the reflection plate 3.

The discharge lamp lighting device 5 will be described with reference to FIGS. The lighting device 5 includes a case body 13 and a circuit module 14 as shown in FIGS. 2 and 3. The case body 13 is formed into an elongated box-like container shape by connecting the aluminum alloy base case 11 and the cover case 12 by claw engagement or the like. The circuit module 14 has the case body 13 excluding both ends in the longitudinal direction.
It is stored in. The circuit module 14 is an insulating sheet (not shown) provided so as to wrap the case 1 into the case body 1.
The fluorescent lamp 6 is electrically insulated from the control unit 3 and performs power conversion by inverter control to control the lighting of the fluorescent lamp 6.

Fixing holes 21 (only one of which is shown) are formed at both ends of the base case 11 in the longitudinal direction. By screwing unillustrated screws through the fixing holes 21 into the chassis 2, the discharge lamp lighting device 5 is attached to the chassis 2 in a posture upside down from the posture shown in FIG. In this mounted state, the base case 11 comes into contact with the inner surface of the chassis 2 to radiate the heat of the discharge lamp lighting device 5 to the chassis 2.

The cover case 12 is shorter than the base case 11, so that both longitudinal ends of the circuit module 14 are exposed at both longitudinal ends of the case body 13.
Reference numeral 12a in FIG. 3 denotes an end plate formed by bending the end of the cover case 12 in the longitudinal direction, and the end of the circuit module 14 in the longitudinal direction is exposed with the end plate 12a as a boundary.

The circuit module 4 includes a printed wiring board 15 represented by a part shown in FIG. 4, a large number of circuit components 16 mounted on at least one surface of the wiring board 15, and one input side terminal block 17. , A plurality of output side terminal blocks 18 (only one is shown in FIG. 2).

The terminal block 17 is mounted on one end in the longitudinal direction of the printed wiring board 15 exposed from the case body 13 so as to be closer to one side in the width direction, and the output side terminal block 18 is mounted on the case body 13.
It is mounted on the other end of the printed wiring board 15 exposed in the longitudinal direction. A power supply line (not shown) is inserted and connected to the terminal block 17. In-apparatus wiring (not shown) is inserted and connected to the plurality of output side terminal blocks 18.

As shown in FIG. 5, the printed wiring board 15 is
Wiring board main body 21 and printing unit 2 provided on the main body 21
2 and. The wiring board main body 21 has an insulating substrate having one surface on which the circuit component 16 is mounted, and a wiring layer composed of a copper foil pattern or the like laminated on the other surface. In the case of the present embodiment, Further, it is formed by covering the wiring layer with a solder resist layer. Circuit components such as chip components are also mounted on the wiring layer, and these circuit components are not covered by the solder resist layer. Therefore, although the printed wiring board 15 of the present embodiment is a double-sided mounting type, a single-sided mounting type printed wiring board can be used in the present invention, and a multilayer printed wiring board is also used in addition to these single-layer printed wiring boards. it can.

One surface of the printed wiring board 15 on which a large number of circuit components 16 are mounted (in other words, one surface of the wiring board main body 21) faces the cover case 12, and is covered except for both longitudinal end portions thereof. It is covered with the case 12. As illustrated in FIG. 5, a component layout display 23 for designating the mounting position of the circuit component 16 to be mounted is printed on one surface of the printed wiring board 15 by silk screen printing. Note that reference numerals 23a, 2
3b shows a component layout display for designating the mounting positions of the terminal blocks 17 and 18. The circuit components 16 are respectively placed at the positions designated by the component layout display 23.
Is mounted by an automatic machine or manually and is soldered to the wiring layer, whereby the circuit module 14 is configured.

In this circuit module 14, the circuit component group mounted close to the input side terminal block 17 forms the input circuit section 24 of the circuit module 14 and is mounted close to the output side terminal block 18. The other circuit component group thus formed forms an output circuit section (not shown) of the circuit module 14. The input circuit section 24 and the terminal block 17 are electrically connected via the wiring layer, and similarly, the output circuit section and each terminal block 18 are also electrically connected via the wiring layer.

The printed portion 22 is a portion of one surface of the wiring board main body 21 not covered with the case body 13, that is, one end portion of the wiring board main body 21 to which the terminal block 17 is mounted in this embodiment. The plate body 21 is provided on the side opposite to the terminal block 17 in the width direction. The printing portion 22 is solid-painted with a single color different from the background color of the one surface, and is printed in a size of a rectangle having sides of about 5 mm to 20 mm, for example. The printing unit 22 of the present embodiment is solid-printed using silk screen printing, and in particular, is printed using a white ink of the same color as the component layout display 23 in order to share the existing printing machine. . Therefore, the printing unit 22 and the component layout display 23 are printed on the one surface at the same time by using the same silk screen printing machine. Therefore, the printing unit 22 can be provided at low cost.

As shown in FIGS. 3 and 4, the printing unit 22 is provided with management information such as one or more qualities such as first quality management information 25 and second quality management information 26. These pieces of quality control information 25 and 26 are both formed by an identification display unique to the printed wiring board, and by extension, an identification display unique to the discharge lamp lighting device 5, for example, a serial number.
The first quality control information 25 is a symbol readable by human eyes, and the second quality control information 26 is a non-illustrated automatic reader provided at an inspection position of the product (discharge lamp lighting device 5). It is formed of a code that can be read by the contact sensor 27.

Writing the first and second quality control information 25 and 26 to the printing unit 22 is a preferable example.
It is provided by cutting a part of. Therefore, both management information 25 and 26 are displayed in the color of the insulating substrate of the wiring board body 21. Quality control information 25, 26 engraved on the printing unit 22
Can be easily produced by irradiating laser light and burning and evaporating the irradiated portion. The writing of the quality control information 25 and 26 into the printing unit 22 is performed before the printed wiring board 15 is put into the assembly process of the discharge lamp stabilizing device 5, for example.

In the present invention, the first management information for managing the quality and the like can use letters and numbers or symbols combining these, and the second management for managing the quality and the like. As the information, it is possible to use a one-step or two-step bar code, or a two-dimensional data code having code points at coordinate points in a two-dimensional X and Y coordinate system. Moreover, the code may be readable by a visual sensor such as an optical sensor or a magnetic sensor.

In the discharge lamp lighting device 5 having the above structure, the quality control information 25, 26 is provided on the end surface of the printed wiring board 15 which is located at one longitudinal end of the case body 13 and is exposed to the outside of the case body 13. The printing unit 22 is displayed.
Since the printing section 22 is a solid white printing layer, for example, the quality control information 25, 26 displayed there can be distinguished from the color of the printing section 22.

The quality control information 25, 26 of the printing section 22 provided on the portion exposed from the case body 13 can be visually checked during or after the discharge lamp lighting device 5 is assembled without being disassembled. It can be easily recognized by the sensor. In other words, regarding the printed wiring board 15 and the discharge lamp lighting device 5 assembled with the printed wiring board 15, it is possible to read identification quality control information for grasping various data in the assembly process, inspection process, and the like. In addition, various data for quality control is stored in the computer of the production factory,
This is called and displayed on the display based on the quality control information read as described above.

Since the quality control information 25, 26 is an identification display unique to each discharge lamp lighting device 5, that is, a serial number, the printed wiring board 15 and the individual discharge lamps assembled with the printed wiring board 15 are lit. It is possible to control the quality of the device 5, and it is also suitable for grasping a change in quality when mass-producing. Moreover, by reading the quality control information 25 and 26, it is possible to know the data for specifying the discharge lamp lighting device 5 for each unit.

Since the first quality control information 25 can be visually read by a human and the second quality control information 26 can be mechanically read by the sensor 27, the printed wiring board 15 can be used.
And the discharge lamp lighting device 5 assembled with the same is produced in an automatic production line, in a manual production line, or in a production line in which an automatic production process and a manual production process are mixed. Suitable when you do. Moreover, even in the case of repair or the like, the data for grasping the manufacturing history can be read by manual visual reading or mechanical reading using the sensor 27.

Moreover, the first and second quality control information 25,
26 is not printed on the printing unit 22 in a superimposed manner, but is provided by shaving a part of the printing unit 22 with a laser beam, so that it does not deteriorate and can be easily read for a long period of time. It is sustainable and in particular the reliability of the machine reading can be maintained for a long time. Further, in comparison with the case where the quality control information 25 and 26 is formed by applying ink, the ink 2
Since 5 and 26 are not required, the cost can be reduced accordingly.

Further, since the printing section 22 and the quality control information 25 and 26 displayed there are not attached like labels, there is no fear of peeling. Moreover, even if the printing unit 22 and the quality control information 25 and 26 are heated by soldering of the circuit component 16 or heat generation of the circuit component 16, the quality control information 25 and 26 are not thermally deformed. . In this way, the display performance of the quality control information 25, 26 can be maintained regardless of the manufacturing environment or the use environment, and therefore the reliability of the display is high, which is also suitable for machine reading.

The present invention is not limited to the above embodiment. For example, only one of the management information 25 and the management information 25 such as quality may be provided in the printing unit 22 for implementation.

Further, the timing of providing management information such as quality in the printing section is not restricted before the parts are put into the assembly line of the discharge lamp lighting device. For example, until the assembly of the discharge lamp lighting device is completed, the printing unit 22 does not have management information such as quality,
Only when it is judged to be good in the product inspection process after assembly,
For example, a serial number may be provided as management information by irradiating a laser beam. In this case, instead of the serial number, code data representing this number may be provided as management information, or both the serial number and code data representing this number may be provided as management information. In the case of manufacturing in this way, it is not necessary to write the management information such as the quality to all the discharge lamp lighting devices, so that the management information can be provided in the printing unit with minimum effort.

Further, the management information such as quality is not limited to the display corresponding to the identification number peculiar to the product, but when the management information is displayed by using the two-dimensional bar code, the amount of the information is remarkably large. Using, it is possible to display information indicating the rating, which has been conventionally written on the nameplate, and other arbitrary management information required for quality control.

[0042]

According to the first aspect of the present invention, the management information such as the quality that stands out in comparison with the color of the solid printing portion, is not deformed by heating, and is not peeled off is displayed. Since it is provided, the management information can be easily recognized visually or by a sensor, and thus a printed wiring board that can be easily managed can be provided.

According to the second and third aspects of the present invention, the printed portion of the printed wiring board according to the first aspect is exposed, for example, at one end of the case body so as not to be covered with the case body. Since the management information such as the quality displayed on the part can be recognized without disassembling the case body, it is possible to provide the discharge lamp lighting device which can be easily managed.

According to the invention of claim 4, since the discharge lamp lighting device according to claim 2 or 3 is provided, management information such as quality displayed on the printing section of the lighting device is displayed on the case body. It is possible to provide a luminaire that can be recognized and easily managed without disassembly.

[Brief description of drawings]

FIG. 1 is a side view showing a partial cross-section of a lighting fixture according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a discharge lamp lighting device according to an embodiment of the present invention, which is included in the lighting fixture of FIG.

3 is a perspective view showing an input side end portion of the discharge lamp lighting device of FIG. 2. FIG.

FIG. 4 is a plan view showing an input side end of the discharge lamp lighting device of FIG. 2 with a cover case removed.

5 is a plan view showing a printed wiring board according to an embodiment of the present invention included in the discharge lamp lighting device diagram of FIG. 2. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Chassis, 4 ... Fluorescent lamp socket (discharge lamp socket), 5 ... Discharge lamp lighting device, 6 ... Fluorescent lamp (discharge lamp), 11 ... Base case, 12 ... Cover case, 13 ... Case body , 14 ... Circuit module, 16 ...
Printed wiring board, 17 ... Terminal block, 21 ... Wiring board main body, 2
2 ... Printing unit, 24 ... Input circuit unit, 25 ... First quality control information, 26 ... Second quality control information

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Takeda             4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Toshiba             Inside Litec Co., Ltd. F term (reference) 3K014 AA02 DA05                 5E338 DD18 DD22 DD34 EE43 EE44

Claims (4)

[Claims] 1. A wiring board main body, and a printing section, on a predetermined area of one surface of the wiring board main body, which is solid-painted with a single color different from the color of the one surface and displays management information. A printed wiring board characterized by the above. 2. A case body having a base case and a cover case, and a printed wiring board according to claim 1 on which circuit components are mounted, and a portion to which the printed portion is attached is covered with the case body. A discharge lamp lighting device, comprising: a circuit module which is exposed so as not to be exposed and is housed in the case body. 3. An end portion of the printed wiring board is exposed to the outside of the case body, a terminal block is provided together with the printing portion at the one end portion, and an input circuit portion of the module circuit is provided close to the one end portion. The discharge lamp lighting device according to claim 2, wherein 4. A chassis, the discharge lamp lighting device according to claim 2 attached to the chassis, a discharge lamp socket attached to the chassis, and a discharge lamp socket detachably supported by the socket. A lighting fixture, comprising: a discharge lamp that is lit by an electric lighting device.