JPH0410708Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a circuit board for mounting electrical components.

[Prior Art] Circuit boards are commonly used to mount electrical components. On the mounting surface of this circuit board, identification symbols such as alpha alphabets, numbers, electrical circuit symbols, mounting symbols, etc. that mean the component name and rating value corresponding to each electrical component are attached to identify each electrical component. The area near the terminal insertion hole may be printed using a method such as silk screen printing.

Conventionally, this identification symbol was printed in a single color such as white, and even for electrical components whose rated values were displayed using a color code, the rated values were displayed using numbers or symbols such as alphanumeric characters.

[Problems that the invention aims to solve] When mounting electrical components on a circuit board at high density,
Each electrical component is packed closely together, and in reality, a large number of components that have the same outward appearance are used. Furthermore, electrical components whose rated values are displayed with color codes have the same external appearance, and it is extremely difficult for those who are not familiar with color codes to decipher the rated values. This is a major cause of incorrect insertion. In addition, after mounting, each electrical component is visually inspected to see if it has been mounted correctly, but this visual inspection is difficult to perform with identification symbols such as single-colored numbers, alphanumeric characters, electrical circuit symbols, and mounting symbols. It was hot.

Therefore, the present invention aims to solve the problems of the above-mentioned prior art.

[Means for solving the problem] With the above purpose in mind, in the present invention, for specific parts whose rated values, etc. are displayed with a color code, the color code is directly printed on the mounting surface of the circuit board. displayed.

[Function] By displaying the color code of the rated value corresponding to a specific electrical component whose rated value is displayed as a color code on the mounting surface, it is distinguished from other identification symbols and attracts attention. Even someone who is not familiar with color codes can read the rated values without error.

[Example] In FIGS. 2 and 3, integrated circuits 2 and 3, capacitors 4 and 5, and resistors 6 and 7 are mounted on a circuit board 1.
Electrical parts such as are mounted. The circuit board 1 has terminal insertion holes 18 for these electrical components as shown in FIG.
Identification symbols 10 to 10 correspond to these electrical parts.
15 and color codes 16 and 17 are printed by silk screen printing. Identification symbols 10 and 11 corresponding to the integrated circuits 2 and 3 are shape marks indicating the component insertion direction, and the capacitors 4 and 5
Identification symbols 12 and 13 corresponding to 1 are composed of a part number, an electric circuit symbol, and a numerical value indicating a rated quantitative value. Identification symbols 14 corresponding to the resistors 6 and 7,
15 consists of a part number and an electric circuit symbol, and color code 1 is the same as the color code 8 and 9 that displays the rated resistance value provided on the outer circumferential surface of resistors 6 and 7.
6 and 17 are printed near the terminal insertion holes 18 of the resistors 6 and 7. For this reason, resistors 6 and 7, which have different rated resistance values but have the same external shape and are easy to insert incorrectly, attract attention because their identification symbols are different from others, and are difficult to decipher unless you are familiar with them. Since the color code of the rated resistance value is printed near the terminal insertion hole, there is less chance of misreading the rated resistance value, making it less likely that incorrect insertion will occur, and also confirming that the terminal is mounted correctly during visual inspection after mounting. It is easy to confirm whether or not this is the case, and is particularly effective when high-density packaging is planned.

In the above embodiment, the color codes 16 and 17, which are the same as the color codes 8 and 9, correspond to the resistors 6 and 7 whose rated resistance values are displayed with color codes.
is displayed on the mounting surface, but it can also be applied to other electrical components that are color coded.

[Effects of the invention] According to the invention described in detail above, incorrect insertion during mounting can be reduced, and incorrect insertion can be easily detected during visual inspection after mounting, thereby making it easier to assemble and inspect circuit boards. The practical effects are truly significant, such as making it easier.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Fig. 1 is a plan view of the circuit board before electrical components are mounted, Fig. 2 is a plan view of the circuit board after electrical components are mounted, and Fig. 3 is a plan view of the circuit board before electrical components are mounted.
The figure is a side view of the same as above. 1... Circuit board, 1a... Mounting surface, 6, 7...
Resistance, 8, 9... Color code of electrical parts, 1
6, 17...Color code displayed on the mounting surface, 18...Terminal insertion hole.

Claims (1)

[Scope of claim for utility model registration] The same color code as the color code provided on the outer circumferential surface of electrical components such as resistors to display rated values, etc. is displayed near the terminal insertion hole of the electrical component on the mounting surface. A circuit board characterized by: