Piezoelectric power generation device

A piezoelectric power generation device comprising:

• (a) a first power generation element including:
• (i) a first support body having a plate-like planar portion lying in a first plane and having opposed upper and lower main surfaces and a first projecting portion projecting from a center portion of the lower main surface of the first support body, the first projecting portion having an outer periphery when seen in plan view along a direction perpendicular to the first plane;
• and
• (ii) a first piezoelectric body provided on the upper main surface of the first support body and overlapping the first projecting portion when the first support body is seen in plan view along a direction perpendicular to the first plane;
• (b) a second power generation element including:
• (i) a second support body having a plate-like planar portion lying in a second plane and having opposed upper and lower main surfaces and a second projecting portion projecting from a center portion of the lower main surface of the second support body;
• and
• (ii) a second piezoelectric body provided on the upper main surface of the second support body and overlapping the second projecting portion when the second support body is seen in plan view along a direction perpendicular to the second plane;
• (c) a plurality of legs extending from at least one of the power generation elements toward the other of the power generation elements and causing the main lower surface of the first support body and the upper main surface of the second support body to be spaced from and opposed to one another with both the second piezoelectric element and the first projection portion located there between and with the first projection portion contacting the second piezoelectric body, the plurality of legs being located radially outward of the outer periphery of the first projecting portion when the first support body is seen in plan view along a direction perpendicular to the second plane.