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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the invention
and FIG. -A cross-sectional view of the magnetic circuit portion of the force, and FIG. 2 is a
perspective view of the speaker device. DESCRIPTION OF SYMBOLS 1 ... Speaker 2, 2 ... pole
piece, 3 ... plate, 4 ...-magnet, 5 .. voice coil, 6 ... thermocouple, 1 ... conducting wire, 8 ... cabinet ,
9 ... warning light or warning meter.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of an overinput warning system for a loudspeaker. This type of prior art uses a part of the input
signal to the speaker to cause a warning operation, which not only has the possibility of
degrading the sound quality that is the speaker's original performance, but There is a drawback
that the circuit becomes relatively complex. The present invention seeks to obtain one without
the above drawbacks. (1) Most of the damage caused by excessive input of the -47 □ 71 Pike 17
speaker is disconnection of the voice coil, deterioration of the voice coil bobbin, deterioration,
etc., and most of the voice coil is abnormal. It is due to the temperature rise. Therefore, it is
considered more practical that the excessive input warning device of the speaker detects the
temperature rise in the vicinity of the voice coil than that detected by the input signal of the
speaker. The present invention is based on the above consideration and, as in the embodiment
shown in FIGS. 1 and 2, the pole piece (2) of the speaker (1) and the coil (5) of the plate (3).
Connect the thermocouple (6) as close as possible to / 1 m, and connect the thermocouple (6)
with the warning light or warning meter (9) placed on the front of the speaker cabinet + 81 by
the lead (7) K It is a thing. In the above embodiment, when an abnormal temperature rise occurs
due to an excessive input to the voice coil value, the thermocouple (6) is set to operate the
warning light or the warning meter (9), and so on. Voice coil (a phrase indication of excessive
input to a phrase-(2)-1 "can be made without affecting the As described above, according to the
present invention, it is possible to obtain a speaker excessive input warning device which is
extremely simple and does not deteriorate the sound quality of the speaker at all. FIG. 4 is a
cross-sectional view of the magnetic circuit portion of the speaker, and FIG. 2 is a perspective
view of the speaker device. ill ... speaker, (2) ... pole piece, (3; ... pre), (4 + ... magnet, (5 j--voice
coil, (6) ... thermocouple, (7 Conductors (8) cabinets (9I warning lights or warning meters). Agent
Shino Shinno-(3) :, 1 to 2 t-”176653" Saie, 7z Fig. 2 de 16 544? No.6, No.6, other applicants,
applicants for utility model registration, or agents, applicants, agents, agent, agent, post, f,
sH100, 1) Higashi 5; 3 Shi J Ryo Ili machine stock company?
氏 名 name + 7375) f, f ト 甲 作 作 m γ · 4 negative. μ ward l 'pivoting 7 μ 廼 f
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description, jps54164547
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