JP3061140B2 - Electronic lighting equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic lighting type lighting apparatus using an electronic circuit board equipped with a pull switch.

[Conventional technology]

Electronic lighting type fluorescent lighting equipment such as a hanging type or a ceiling-mounted type has an electronic circuit board on which electronic circuit components are collectively attached and wired in a pattern at almost the center of the chassis. In order to apply a tensile load at the time of the switching operation of the switch, as shown in FIG. 5, the electronic circuit board 40 was installed substantially at the center of the electronic circuit board 40, and was mounted directly to the chassis 43 together with the electronic circuit board 40 with fixing screws 44. . At the same time, conventionally, an appropriate portion on the peripheral portion of the electronic circuit board 40 has been fixed to the chassis 43 by using fixing screws as shown by 45 and 45b.

[Problems to be solved by the invention]

In the prior art, no consideration is given to the prevention of deformation of the electronic circuit board due to the deformation of the chassis that occurs when the pull switch is pulled, and the electronic circuit board is deformed with the chassis that is bent by the operation of the drawstring, There are inherent problems such as the peeling of the wiring pattern provided on the substrate and the generation of cracks.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lighting fixture in which deformation of an electronic circuit board due to chassis deformation during pull switch operation is prevented, and peeling and cracking of a wiring pattern are prevented.

[Means for solving the problem]

An object of the present invention is to provide an electronic lighting type lighting apparatus comprising a lamp lighting electronic circuit board provided with a pull switch in the center and mounting and wiring electronic components, and a chassis and a reflector for accommodating the electronic circuit board. By attaching a switch to a chassis, a center portion of the electronic circuit board is fixed to the chassis, and a gap is provided between a peripheral portion of the electronic circuit board and a means for holding the peripheral portion to the chassis. This is achieved by preventing the electronic circuit board from being deformed even if the electronic circuit board is deformed.

[Action]

In an electronic lighting type lighting device suspended by a cord, when a pull cord of a pull switch is pulled, a chassis fixing an electronic circuit board is deformed so as to be curved downward with a cord case fastening portion as a fulcrum. . In a state where the peripheral portion of the electronic circuit board is not freely fixed at all, the electronic circuit board is simply vertically moved with the displacement of the chassis,
By merely displacing the substrate in a horizontal state, the substrate itself does not undergo a curved deformation. However, when the peripheral portion of the electronic circuit board is in a completely free state as described above, there is a large possibility that cracks in the wiring pattern and breakage of the board itself may occur due to vibration during transportation of the product.

Therefore, it is necessary to limit the displacement of the peripheral portion of the electronic circuit board to a certain degree or more. In actual use of the lighting equipment, when pulling the pull switch, by keeping a gap corresponding to the displacement of the chassis, the periphery of the electronic circuit board is held in a semi-fixed state on the chassis,
The electronic circuit board can be prevented from being bent and deformed when the pull switch is operated, and troubles due to vibration and impact during transportation of the product can be eliminated.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings. First
FIG. 2 is an exploded perspective view showing a main part of the main body of the electronic lighting type lighting device according to the present invention, FIG. 2 is a cross-sectional view of main parts in an assembled state of the main body, FIG. FIG. 4 is a view showing another embodiment of the present invention, in which (a) shows a state before mounting the substrate and (b) shows a state after mounting the substrate. In FIG. 1, 1 is a chassis, 2 is a reflector for covering the lower surface of the chassis 1, 3 is an electronic circuit board for lighting the lamp, and a multi-stage pull switch 4 for switching and blinking the lamp is mounted at the center thereof. Other electronic components 5 are arranged around the periphery, and a required connection circuit pattern is provided. 6 is a fixed cord case at the center of the upper part of the chassis, 8 is a power cord for suspension, 7a and 7b are screws for fixing the code case 6 to the chassis 1, and 9 is between the electronic circuit board 3 and the chassis 1. Is an electrically insulating part interposed in the plastic molding material, and is formed of a flexible plastic molding material. In this embodiment, the size is almost equal to the size of the electronic circuit board 3. However, if the electrical insulation from the chassis 1 can be sufficiently maintained, as in another embodiment (FIG. 4) described later. In addition, a small component for attaching the peripheral portion of the electronic circuit board 3 to the chassis 1 in a semi-fixed state is used, and there is no need to use the large insulating component described above. Reference numeral 10 in the figure denotes an insertion protrusion provided on the side surface of the electric insulating component 9, which is engaged with the cut-and-raised hole 11 of the chassis 1. Reference numerals 12a and 12b denote hook claws provided on the upper side of the electrically insulating component 9, which are locked by being pushed into locking holes 13a and 13b provided in the chassis 1.
Reference numerals 14a, 14b, 14c, 14d, and 14e denote holding claws of the electronic circuit board 3 provided on the periphery of the electric insulating component 9, and include 24a, 24b, 24c, and 24.
Reference numerals d and 24e denote holding portions of the substrate 3, respectively, which extend in a key shape at the tip of the holding claw. Reference numerals 15a, 15b, 15c, 15d, and 15e denote positioning protrusions of the circuit board 3 provided near the holding claws of the electronic circuit board 3. Reference numeral 16 denotes a screw for fixing the pull switch 4, which penetrates a hole 17 provided in an electrically insulating part and which is mounted on the chassis 1.
By directly fastening to the screw hole 18 of the pull switch 4
When the pull cord 19 is pulled, the pull switch 4 is prevented from coming off the electronic circuit board 3. 20 and 21 are fluorescent lamps, 22 is a bead ball, and 23a and 23b are lamp holders.

The state of the electronic circuit board 3 at the time of pull string operation of the pull switch in the lighting fixture assembled with the above-described components is described as a second state.
This will be described with reference to FIG. 3 and FIG. FIG. 2 is a view showing a stationary state, in which the board holding claws 14 protruding from the peripheral edge of the electrically insulating component 9 are shown.
a, 14e and holding parts 24a, 24e extended to them and
The correlation between the projections for positioning the substrate, indicated by 15a and 15e, is determined by the fixing screw shown in FIG.
The upper surface of the peripheral portion of the electronic circuit board 3 is abutted on the positioning projections 15a and 15e in a state where it is screwed to the chassis 1, and the lower surface is in a semi-fixed state while maintaining a gap G with the tips of the board holding portions 24a and 24e. Attach it to the chassis 1 side. Here, the amount of the gap G is, as shown in FIG. 3, when the drawstring 19 connected to the lower end of the drive unit 26 of the pull switch 4 is pulled by the maximum tensile load P detached from the connection unit 27, It is desirable that the central portion 25 of the chassis 1 be substantially equal to the amount δ of downward bending about the cord case fixing screws 7a and 7e as a fulcrum. It does not depart from the gist.

As shown in FIG. 3 above, the pull cord 19 of the pull switch 4
When the pulling switch is switched, the mounting portion 25 of the electronic circuit board 3 of the chassis 1 is bent downward.
The substrate 3 itself only moves up and down while maintaining a horizontal state, and no bending stress is applied to the substrate 3.

Next, FIG. 4 shows another embodiment exhibiting the same effect. In the figure, reference numeral 28 denotes a hole provided at an appropriate position on the periphery of the electronic circuit board 3. Reference numeral 29 denotes a locking hole provided in the chassis 1, reference numeral 30 denotes a column-shaped mounting member formed of a flexible material, and a diameter d of the middle portion of the hole is the inner diameter D of the hole 28 of the electronic circuit board 3. It is slightly smaller, and the collar 31 at the lower end,
An elastic locking claw portion 32 is integrally formed at the upper end. FIG. 4 (b) is a cross-sectional view showing a state in which these components are assembled. In the stationary state before pulling the pull string of the pull switch 4, the lower surface of the electronic circuit board 3 and the brim portion of the fixture 30
By attaching the board 3 to the chassis 1 in a semi-fixed state where the gap G is provided between the upper surface 33 of the electronic circuit board 3 and the upper surface 33 of the electronic circuit board 3 in the same manner as in the above embodiment, at the time of pulling operation of the pull switch 4. Bending stress can be prevented.

〔The invention's effect〕

As described above, the electronic lighting type lighting apparatus according to the present invention includes an electronic circuit board for lighting a lamp, which is provided with a pull switch in the center and has electronic components mounted thereon and wired, a chassis for housing the electronic circuit board, and a reflection plate. In the electronic lighting type lighting apparatus, the pull switch is attached to a chassis, thereby fixing a central portion of the electronic circuit board to the chassis, and holding the peripheral edge of the electronic circuit board and the peripheral edge to the chassis. By providing a gap between the electronic circuit board and the chassis, even if the chassis is deformed, the electronic circuit board is not deformed.
A bending stress is not applied to the electronic circuit board or can be reduced. It is possible to prevent repeated excessive bending stress from being applied, thereby preventing accidents such as pattern cracking or peeling of wiring etc. on the above-mentioned board, and mounting the board in a semi-fixed state, damaging the board due to vibration or impact during product transportation Can be prevented.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of a main body of an electronic lighting type lighting device according to the present invention, FIG. 2 is a cross-sectional view of main parts in an assembled state of the main body, and FIG. FIG. 4 shows another embodiment of the present invention.
FIG. 5A is a diagram showing a state before mounting the substrate, and FIG. 5B is a diagram showing a state after mounting the substrate. FIG. DESCRIPTION OF SYMBOLS 1 ... Chassis 2 ... Reflector 3 ... Electronic circuit board 4 ... Pull switch 5 ... Electronic parts.

Claims (1)

(57) [Claims] 1. An electronic lighting type lighting apparatus comprising: a lamp lighting electronic circuit board provided with a pull switch in the center, mounted with electronic components, and wired; a chassis accommodating the electronic circuit board; and a reflector. By attaching a pull switch to the chassis, the central portion of the electronic circuit board is fixed to the chassis, and a gap is provided between a peripheral portion of the electronic circuit board and a means for holding the peripheral portion to the chassis,
An electronic lighting type lighting device wherein the electronic circuit board is not deformed even when the chassis is deformed.