CN216643876U

CN216643876U - Classroom eyeshield lamp with megaphone

Info

Publication number: CN216643876U
Application number: CN202123450298.0U
Authority: CN
Inventors: 郑平; 唐谋云; 李来; 侯光强
Original assignee: Shenzhen Xingte Energy Technology Co ltd
Current assignee: Shenzhen Xingte Energy Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a classroom eye-protecting lamp with a loudspeaker, which comprises a shell and a light source arranged in the shell, wherein a side plate of the shell is provided with a plurality of sound amplifying holes; the shell is also provided with an audio receiver connected with the PCB, and the audio receiver is used for receiving frequency modulation signals sent by the wireless microphone. According to the classroom eye-protection lamp, the shell of the lamp is provided with the loudspeakers, but the lamp is evenly distributed and timed in a classroom, the loudspeakers are also evenly distributed and arranged, and the loudspeakers are in wireless signal connection with the wireless microphone held by a teacher; the teacher teaching content can send the sound to each corner of the classroom through the loudspeaker arranged on the lamp, so that the classroom sound is uniformly distributed; thus, each student can clearly listen to the teaching content of the teacher.

Description

Classroom eyeshield lamp with megaphone

Technical Field

The utility model relates to a lamp, in particular to a classroom eye-protecting lamp with a loudspeaker.

Background

When a teacher goes to class, especially for the lower grades of primary school, the teacher generally uses a hand-held loudspeaker so as to enable each student to clearly listen to the class content. However, since the speaker and the microphone are substantially on the teacher, the handheld microphone may cause the students behind the classroom to hear unclear teaching contents because the sound transmitted by the microphone is unevenly transmitted in the classroom.

SUMMERY OF THE UTILITY MODEL

Based on the above problems, the present invention is to provide an eye-protecting lamp for classroom with a loudspeaker, which can keep the sound balance in all directions in the classroom and make all students clearly listen to the sound.

The technical scheme of the utility model is as follows:

a classroom eye-protecting lamp with a loudspeaker comprises a shell and a light source arranged in the shell, wherein a side plate of the shell is provided with a plurality of sound amplifying holes, the inner wall of the side plate and the positions of the sound amplifying holes are provided with a loudspeaker, and the loudspeaker is electrically connected with a PCB (printed circuit board) arranged on the lamp; the shell is also provided with an audio receiver connected with the PCB, and the audio receiver is used for receiving frequency modulation signals sent by the wireless microphone.

In one embodiment, in the classroom eye-protection lamp, an audio demodulator and a power amplifier are further arranged on the PCB; the audio demodulator demodulates the frequency modulation signal transmitted by the audio receiver into an audio signal, and transmits the audio signal to the power amplifier to amplify the audio signal and then transmits the amplified audio signal out of the loudspeaker.

In one embodiment, the classroom eye-protection lamp is in a strip-shaped structure and comprises two side plates, one or more than two speakers are respectively arranged on the inner wall of each side plate, and a plurality of sound expansion holes are correspondingly formed in the side plates and at the positions of the speakers.

According to the classroom eye-protection lamp with the loudspeakers, the loudspeakers are arranged on the shell of the lamp, but the lamp is evenly distributed and timed in a classroom, the loudspeakers are also evenly distributed and arranged, and the loudspeakers are in wireless signal connection with the wireless microphone held by a teacher; the teacher teaching content can send the sound to each corner of the classroom through the loudspeaker arranged on the lamp, so that the classroom sound is uniformly distributed; thus, each student can clearly listen to the teaching contents of the teacher.

Drawings

Fig. 1 is a schematic structural view of a classroom eye-protection lamp with a loudspeaker according to the present invention;

FIG. 2 is a schematic diagram of a side panel structure of a classroom eye-protection lamp;

fig. 3 is a block diagram of a wireless microphone and loudspeaker implementation.

Detailed Description

The preferred embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present invention provides a classroom eye-protection lamp 100 with a loudspeaker, which includes a housing 110 and a light source 120 disposed in the housing 110. The lamp 100 has an elongated configuration, and the housing 110 includes a top cover 112 and side plates 111. A plurality of sound diffusing holes 102 are formed in the side plate 111, a speaker 130 is arranged on the inner wall of the side plate 111 and at the position of the sound diffusing hole 101, the speaker 224 is electrically connected with the PCB 140 arranged on the lamp through a wire 101, in the embodiment, the PCB 140 is arranged on the inner wall of the side plate 111; an audio receiver 114 connected to the PCB 140 is further disposed on the top cover 112 of the housing 110, and the audio receiver 114 is used for receiving fm signals transmitted from the wireless microphone 210.

In one embodiment, the microphone 220 includes an audio receiver 221, an audio demodulator 222, a power amplifier 223, and a speaker 224; the wireless microphone 210 includes a microphone sensor 211, an audio signal amplifier 212, a low pass filter 213, an audio modulator 214, and an audio transmitter 215. The realization principle is as follows:

when the wireless microphone 210 is turned on, the microphone sensor 222 receives the teacher's voice, also called audio collection, and the audio signal is output with a lower power, such as 100mV, where the audio signal has a smaller amplitude and is often accompanied by a larger noise. The audio signal amplifier 212 performs pre-amplification after receiving the input audio signal, that is, amplifies a small signal; then, the noise in the audio signal is removed by the low pass filter 213, leaving the audio signal with clean voice, and the noise-removed audio signal is sent to the audio modulator 214 for modulation processing, and the modulated signal is sent out by the audio transmitter 215 in a wireless signal manner.

An audio receiver 221 in the loudspeaker 220 receives the modulated audio signal and then transmits the audio signal to an audio demodulator 222, the audio signal is demodulated and transmitted to a power amplifier 223 to be amplified, and finally the audio signal is transmitted to a loudspeaker 223 to be played, wherein the sound at the moment is clear and loud teacher teaching sound; the audio receiver 221 is electrically connected to the receiving antenna 114 disposed on the top cover 112 of the lamp housing 110, and the receiving antenna 114 is mainly used to enhance the signal receiving capability.

Preferably, in the classroom eye-protection lamp 100, one or more speakers 224 are respectively disposed on the inner walls of the two side plates 111; accordingly, a number of sound diffusing holes 101 are provided on the side panel 111 at the position of each speaker 224. In this embodiment, two speakers 224 are preferred to improve the sound transmission effect so that the clear teacher teaching sound can be heard in each corner of the classroom.

It should be understood that the above description is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. A classroom eye-protecting lamp with a loudspeaker comprises a shell and a light source arranged in the shell, and is characterized in that a side plate of the shell is provided with a plurality of sound amplifying holes, the inner wall of the side plate is provided with a loudspeaker at the position of the sound amplifying hole, and the loudspeaker is electrically connected with a PCB arranged on the lamp; the shell is also provided with an audio receiver connected with the PCB, and the audio receiver is used for receiving frequency modulation signals sent by the wireless microphone.

2. The classroom eye-protecting light fixture of claim 1, wherein an audio demodulator and a power amplifier are further disposed on the PCB; the audio demodulator demodulates the frequency modulation signal transmitted by the audio receiver into an audio signal, and transmits the audio signal to the power amplifier to amplify the audio signal and then transmits the amplified audio signal out of the loudspeaker.

3. A classroom eye protection light fixture according to claim 1, wherein the light fixture is of an elongated configuration comprising two side panels, one or more speakers are provided on the inner wall of each side panel, and correspondingly, a plurality of sound diffusing holes are provided in the side panels at the location of each speaker.