Sound output device and sound guiding device

A sound output device, comprising:

• a sound generating portion configured to generate a sound;
• a holding portion that has a hollow structure on a first side through which an ambient sound is taken into an ear canal;
• and
• a sound guiding portion supported by the holding portion on a second side and configured to propagate the sound generated in the sound generating portion to a sound output hole of the sound guiding portion, wherein
• the holding portion is engageable with an intertragic notch of the ear to hold the sound output device outside the ear canal and position the sound output hole of the sound guiding portion to face an ear cavity,
• the sound guiding portion includes a deforming portion,
• the sound output hole of the sound guiding portion is fixed at an entrance of an external auditory meatus, by the holding portion so as not to enter into the ear canal,
• the sound output hole does not enter into the ear canal based on a deformation of the deforming portion,
• the sound output hole is separated from an inner wall of the ear in a case the sound output device is worn on the ear cavity,
• the sound output hole propagates the sound from the sound output hole to the ear canal, with the hollow structure of the holding portion having the ambient sound propagated into the ear canal,
• the sound output device does not include a hook to hang the sound output device over the ear, and
• the sound output device does not include an earpiece placed inside the ear canal to hold the sound output device.