1. A temperature control apparatus for an endoscope, the temperature control apparatus comprising:
a heater arranged in an endoscope, the heater being heated as a result of supply of power;
a power line for supplying power generated by a power source to the heater, the power line being connected to the power source;
a temperature detection section that detects a temperature of an object to be heated, the object to be heated being heated by the heater;
a semiconductor switch provided on the power line, the semiconductor switch performing switching between supply and shut off of the power to the heater;
a control section that controls the semiconductor switch according to a temperature detection result from the temperature detection section to perform temperature control for the object to be heated, and performs heating stopping control to turn the semiconductor switch off based on the temperature detection result;
a mechanical switch provided on the power line, the mechanical switch performing switching between continuity and shut off of the line; and
a heating stopping circuit that if an abnormality occurs in temperature control for the heater, performs heating stopping control to turn the mechanical switch off.
2. The temperature control apparatus for an endoscope according to claim 1, wherein the heating stopping circuit detects at least a failure of the semiconductor switch, and performs the heating stopping control to turn the mechanical switch off.
3. The temperature control apparatus for an endoscope according to claim 1, wherein if the heating stopping circuit detects based on the temperature detection result that the temperature of the object to be heated becomes a high temperature equal to or exceeding a predetermined threshold value, the heating stopping circuit performs the heating stopping control to turn the mechanical switch off.
4. The temperature control apparatus for an endoscope according to claim 1, comprising a control section monitoring circuit that detects a failure in the control section and performs the heating stopping control to turn the mechanical switch off.
5. The temperature control apparatus for an endoscope according to claim 1, wherein if the control section detects based on the temperature detection result that the temperature of the object to the heated becomes a high temperature equal to or exceeding a predetermined threshold value, the control section performs the heating stopping control to turn the semiconductor switch off.
6. The temperature control apparatus for an endoscope according to claim 1, wherein if the control section detects based on the temperature detection result an abnormality of at least one of the temperature detection section and the heater, the control section performs the heating stopping control to turn the semiconductor switch off.
7. The temperature control apparatus for an endoscope according to claim 1,
wherein the heating stopping circuit is provided by a function of a part of the control section; and
wherein the heating stopping circuit detects at least a failure of the semiconductor switch, and performs the heating stopping control to turn the mechanical switch off.
8. The temperature control apparatus for an endoscope according to claim 1, wherein the heating stopping circuit includes:
a current detection section that detects a current flowing in the power line; and
a switch control section that performs onoff control of the mechanical switch according to the detection result from the current detection section.
9. The temperature control apparatus for an endoscope according to claim 1, wherein the mechanical switch includes a mechanical relay.
10. The temperature control apparatus for an endoscope according to claim 1, wherein the semiconductor switch includes a MOS switch.
11. The endoscope temperature control apparatus according to claim 1, wherein the mechanical switch is provided on the power line, between the power source and a power circuit that generates power to be supplied to the heater.
a switch control section provided by a function of a part of the control section, the switch control section performing onoff control of the mechanical switch according to a detection result from the current detection section.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A kit for mounting open mesh screen to a structure, the kit comprising:
first and second sections of mesh screen;
an elongate base; and
first and second elongate arrays of posts extending from the elongate base, each elongate array having a plurality of rows of posts, each post being operable to engage corresponding openings in the sections of mesh screen to secure the screen sections to the elongate base;
wherein substantially all of the posts of the first array point in a single first direction generally towards the posts of the second array and substantially all of the posts of the second array point in a single second direction generally towards the first array of posts, wherein the posts of the first array engage the corresponding openings in the first section of mesh screen, and wherein the posts of the second array engage the corresponding openings in the second section of mesh screen.
2. A mounting strip as claimed in claim 1 wherein the posts are angled at an acute angle with respect to the base to help hold the screen in place.
3. A mounting strip as claimed in claim 1 wherein the base is adapted to secure the first and second sections of mesh screen thereto without the use of a resilient spline.
4. A mounting strip as claimed in claim 1 wherein the posts comprise hooks.
5. A mounting strip as claimed in claim 1 further comprising a protective cover for engaging and concealing the base.
6. A mounting strip as claimed in claim 1 further comprising a protective cover with openings corresponding to the location and spacing of the posts.
7. A mounting strip as claimed in claim 1 wherein the elongate base and the posts are plastic.
8. A mounting strip as claimed in claim 5 wherein the elongated base has an alignment element and the protective cover has a corresponding alignment element for engaging the alignment element of the base.
9. A mounting strip as claimed in claim 1 wherein the base has openings formed therein for receiving fasteners therethrough for securing the base to the structure.
10. A mounting strip as claimed in claim 1 wherein the base is operable to receive adhesive for securing the base to the structure.