JP6725021B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting fixture.

Conventionally, as disclosed in, for example, Japanese Unexamined Patent Application Publication No. 2010-152641, there is known a data access system for accessing flash memory information without taking out a board mounted with a microcomputer from a product (case). There are times when it is desired to access the memory information inside the microcomputer, such as reading data. However, I would like to avoid complicated work such as removing the microcomputer once mounted on the board. Therefore, in the technique according to the above-mentioned publication, by using wireless communication, it is possible to access data without removing the microcomputer or removing the board after mounting the microcomputer.

Specifically, the data access system according to this publication includes an antenna section, a wireless function section, and a microcomputer on a board on which electronic components to be incorporated in a product are mounted. The antenna unit receives an electromagnetic wave transmitted from a wireless reader/writer for data access. The wireless function unit accesses the memory by power transmission from an electromagnetic wave received by the antenna unit and data communication. This allows the microcomputer to be wirelessly accessed using the wireless reader/writer.

JP, 2010-152641, A

An LED lighting device equipped with a microcomputer having a built-in flash memory may have a configuration in which the microcomputer is mounted on the solder side of the circuit board and the circuit board is mounted on the base case. The microcomputer has a terminal for accessing the internal flash memory information, and this terminal is located on the solder side. When accessing the flash memory of the LED lighting device having such a structure, it is necessary to remove the circuit board from the base case and perform the access operation. As a result, there have been problems that the efficiency of system development is improved and system maintenance after product shipment is simplified.

In the technique according to Japanese Patent Laid-Open No. 2010-152641, since wireless communication is performed, the antenna unit for data communication and the like are inevitably required. As a result, there are problems such as an increase in circuit scale and circuit complexity. It is more preferable to perform data access by another method other than wireless communication that causes a problem such as an increase in circuit scale without removing the microcomputer or removing the board after the microcomputer is mounted.

It is an object of the present invention to provide a lighting fixture that enables easy access to flash memory information of a microcomputer from outside the case.

Luminaire that written in the present invention,
Lighting device,
A light emitting element that is turned on by the lighting device;
Equipped with
The lighting device is
Circuit board,
An integrated circuit provided on the circuit board, including a memory and an access terminal, and capable of performing an access operation that is at least one operation of erasing, writing, and reading information in the memory via the access terminal;
A cover case for covering the circuit board,
Equipped with
The circuit board includes a protrusion protruding outside the cover case so that the surface is exposed,
A conductor electrically connected to the access terminal is provided on the surface of the protrusion,
The protruding portion is provided with a through hole penetrating the circuit board in the thickness direction of the circuit board ,
The conductor is Ri conductive material der fill land or the land provided around the through hole,
The next to the conductor on said surface of the projecting portion, Ru includes a protruding insulator than the conductor in the thickness direction of the circuit board.

According to the present invention, the flash memory information of the microcomputer can be easily accessed from outside the case.

It is a figure for demonstrating the structure of the lighting device concerning Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 1 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 2 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 2 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 2 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 2 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 2 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 2 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 3 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 3 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 4 of this invention. It is a figure for demonstrating the structure of the lighting device concerning Embodiment 4 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 4 of this invention. It is a figure for demonstrating the structure of the lighting device concerning the modification of Embodiment 4 of this invention.

Embodiment 1.
1 to 5 are diagrams for explaining the configuration of the lighting device 100 according to the first embodiment of the present invention, and are also circuit diagrams of the lighting device 100. As shown in FIG. 1, the lighting device 100 is connected to the commercial AC power supply 1 and supplies a direct current to the light emitting element (LED) 3.

The lighting device 100 includes a printed circuit board 6 (hereinafter, referred to as PWB 6) on which electronic components are mounted, a base case 4 to which the PWB 6 is attached, and a cover case 5 attached to the base case 4 so as to cover the PWB 6. .. The PWB 6 has a component surface 9 and a solder surface 10. A microcomputer 16 having an integrated circuit including a memory therein is mounted on the component surface 9 or the solder surface 10 of the PWB 6.

The microcomputer 16 has a plurality of terminals 17 for accessing the internal memory. Hereinafter, “access” to the microcomputer 16 described in the embodiments means at least erasing, accessing, and reading of memory stored information in a microcomputer having a memory (specifically, a flash memory in this embodiment). It means one operation. The information in the flash memory inside the microcomputer 16 can be accessed through the terminal 17.

FIG. 2 is a diagram showing the base case 4 and the cover case 5, respectively, in which the PWB 6 is housed. FIG. 3 is a diagram of the lighting device 100 with the cover case 5 attached, and FIG. 4 is a plan view when the component surface 9 of the PWB 6 is viewed with the cover case 5 removed, and FIG. It is a figure which shows the cross section along the broken line X1.

In FIG. 4, the land 11, the microcomputer 16, the terminal 17, the wiring pattern 17a, and the like are shown by dotted lines. This is because the microcomputer 16 and the like are mounted on the solder surface 10 side of the PWB 6 and the PWB 6 is seen through for convenience. In addition, the access device 14 is also shown in the cross-sectional views of the lighting devices of the respective embodiments described below including FIG. In the sectional views of the lighting devices of the respective embodiments described below including FIG. 5, the PWB 6 and the base case 4 are shown separately for convenience. However, in the actual lighting device 100, it is assumed that the PWB 6 is housed and fixed in the base case 4.

A wiring pattern 17a connected to the terminal 17 of the microcomputer 16 is provided on the solder surface 10 of the PWB 6. The PWB 6 has a through hole 12 penetrating from the component surface 9 to the solder surface 10 and also through the wiring pattern 17a. A circular land 11 to be soldered is formed in the through hole 12 in which one end of the wiring pattern 17a is located. By soldering the lands 11, the through holes 12 are closed with solder.

As shown in the cross-sectional view of FIG. 5, by moving the entire access device 14 toward the printed circuit board 6 and inserting the access pin 15 into the through hole 12, the access pin 15 can be brought into contact with the solder 13. .. The solder 13 is connected to the land 11, and the land 11 is connected to the terminal 17 of the microcomputer 16. The access device 14 may be provided with a movable part so that only the access pin 15 can be moved in the axial direction.

When the cover case 5 is removed from the base case 4, the component surface 9 of the PWB 6 becomes visible from the outside. It is possible to bring the access pin 15 into contact with the terminal 17 by preparing the access device 14 including the access pin 15 and applying the access pin 15 from the front surface side (component surface 9 side) to the solder 13 which is a conductor through the through hole 12. it can. That is, since the access pin 15 can be inserted into the through hole 12 only by removing the cover case 5, the microcomputer 16 can be accessed without removing the PWB 6 from the base case 4. In this state, the flash memory of the microcomputer 16 can be accessed by transmitting a write signal or the like from the access device 14 to the microcomputer 16 via the access pin 15.

As described above, it is not necessary to remove the PWB 6 from the base case 4 when accessing the flash memory of the microcomputer 16, and it is possible to access the software in the memory of the microcomputer 16 simply by removing the cover case 5. Since no new external parts, new control circuit, etc. are required, it is possible to improve the development efficiency of the system and simplify the system maintenance after product shipment while avoiding an increase in circuit scale and complexity.

6 and 7 are diagrams showing a lighting device 110 according to a modification of the first embodiment of the present invention. FIG. 6 is a plan view when the cover case 5 is removed and the component surface 9 of the PWB 6 is visually recognized, and FIG. 7 is a view showing a cross section taken along a broken line X2 in FIG. 6 and 7, the land 11 also serves as a land for mounting the chip-shaped electronic component 18. The electrodes of the electronic component 18 are mounted on the lands 11 with the solder 13. By electrically connecting the back surface of the electronic component 18 and the land 11 portion, the access pin 15 can be brought into contact with the electronic component 18 through the through hole 12. Information in the microcomputer 16 can be accessed in this contact state.

Embodiment 2.
8 to 10 are diagrams showing the configuration of the lighting device 200 according to the second embodiment of the present invention. 8 is a view of the lighting device 200 with the cover case 5 attached, FIG. 9 is a plan view when the cover case 5 is removed, and the component surface 9 of the PWB 6 is visually confirmed, and FIG. It is a figure which shows the cross section along the broken line X3. A jumper wire 19 inserted into the through hole 12 from the component surface 9 side is mounted on the land 11 connected to the terminal 17 of the microcomputer 16. The jumper wire 19 is in contact with the land 11 connected to the terminal 17 of the microcomputer 16. Therefore, as shown in the drawing, the memory of the microcomputer 16 can be accessed by bringing the access pin 15 of the access device 14 into contact with the jumper wire 19.

As shown in FIG. 8, in the second embodiment, cover case 5 is provided with holes 5a, 5b, 5c and 5d. The holes 5a, 5b, 5c and 5d are provided so as to be located right above the respective through holes 12 in a plan view. As a result, the access pin 15 can be inserted into the holes 5a, 5b, 5c and 5d, and the access pin 15 can be brought into contact with the jumper wire 19 without removing the cover case 5.

11 to 13 are diagrams showing a configuration of a lighting device 200 according to a modified example of the second embodiment of the present invention. FIG. 11 is a view of the lighting device 210 with the cover case 5 attached, FIG. 12 is a plan view when the cover case 5 is removed, and the component surface 9 of the PWB 6 is viewed, and FIG. It is a figure which shows the cross section along the broken line X4. This modification is characterized in that the jumper wire 19 is replaced with an axial lead type electronic component. Specifically, the axial lead type resistor 20 may be mounted, and the lead pin may be brought into contact with the access pin 15 of the access device 14 to allow access from the component surface 9 side.

According to the second embodiment and the modified example thereof, the access pin 15 is brought into contact with an axial lead type electronic component or a jumper wire. Therefore, there is an advantage that the PWB 6 does not need to be holed and soldered to the land.

Also, the holes 5a, 5b, 5c, and 5d allow the access pin 15 to contact the jumper wire 19 without removing the cover case 5. As a result, the lighting device 200 can be manufactured and managed as an inventory while the microcomputer 16 is not set for writing or the like. This is because writing and setting to the microcomputer 16 can be easily performed at the time of shipment. This has the advantage of facilitating inventory management.

The holes 5a, 5b, 5c, and 5d are not limited to those in the second embodiment, but may be appropriately provided in the cover case 5 in the first embodiment and the third and fourth embodiments described later.

Embodiment 3.
14 and 15 are diagrams showing the configuration of the lighting device 300 according to the third embodiment of the present invention. FIG. 14 is a plan view when the cover case 5 is removed and the component surface 9 of the PWB 6 is visually recognized, and FIG. 15 is a view showing a cross section taken along a broken line X5 in FIG. The lighting device 300 according to the third embodiment includes the PWB 21. The PWB 21 is a double-sided board having wiring patterns on both the front surface and the back surface. Since it is a double-sided board, a chip component 116 is mounted on the component surface, and the land 11 of this chip component 116 is connected to the terminal 17 of the microcomputer 16. Therefore, the flash memory of the microcomputer 16 can be accessed by bringing the access pin 15 of the access device 14 into contact with the land 11.

Fourth Embodiment
16 and 17 are diagrams showing the configuration of the lighting device 400 according to the fourth embodiment of the present invention. 16 is a plan view of the lighting device 400 viewed from the cover case 5 side, and FIG. 17 is a side view thereof. The PWB 6 includes a protrusion 6 a that protrudes outside the cover case 5 and is not covered by the cover case 5. A through hole 12 is provided in the protruding portion 6a. Therefore, it is possible to access the flash memory of the microcomputer 16 without opening the cover case 5.

18 and 19 are diagrams showing a lighting device 410 according to a modified example of the fourth embodiment of the present invention. Like the lighting device 410, the protrusion 6 a may be provided with the insulator 22 provided on the surface of the component surface 9 next to the through hole 12. The insulator 22 has a certain thickness, and the insulator 22 ensures the insulation distance as shown in FIG. 19 and prevents the finger 30 from touching the land and the wiring near the through hole 12. To be done.

In addition, in Embodiment 4, it is not limited to the through hole 12 that is exposed to the protrusion 6 a. The jumper wire 19 and the axial lead type component (for example, the resistor 20) may be exposed as in the second embodiment, or the land of the chip component 116 may be exposed as in the third embodiment.

1 Commercial AC Power Supply, 3 LEDs, 4 Base Case, 5 Cover Case, 5a, 5b, 5c, 5d Opening, 6 Printed Circuit Board, 6a Projection, 9 Component Side, 10 Solder Side, 11 Land, 12 Through Hole, 13 Solder, 14 access device, 15 access pin, 16 microcomputer, 17 access terminal, 17a wiring pattern, 18 electronic component, 19 jumper wire, 20 resistor, 22 insulator, 30 finger, 100, 110, 200, 210, 300, 400 Lighting device, 116 chip parts

Claims (2)

Lighting device,
A light emitting element that is turned on by the lighting device;
Equipped with
The lighting device is
Circuit board,
An integrated circuit provided on the circuit board, including a memory and an access terminal, and capable of performing an access operation that is at least one operation of erasing, writing, and reading information in the memory via the access terminal;
A cover case for covering the circuit board,
Equipped with
The circuit board includes a protrusion protruding outside the cover case so that the surface is exposed,
A conductor electrically connected to the access terminal is provided on the surface of the protrusion,
Wherein the protruding portion through hole is provided passing through the circuit board in a thickness direction of the circuit board, the conductor is Ri conductive material der fill land or the land provided around the through hole,
The next conductor, said circuit thickness direction to the conductive luminaire Ru provided with a protruding insulator than of the substrate in the surface of the projecting portion. The insulator is a first insulator adjacent to the conductor on the surface of the protrusion, and a first insulator provided on the opposite side of the first insulator with the conductor sandwiched on the surface of the protrusion. The lighting fixture according to claim 1 , further comprising a double insulator.

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